#linuxcnc Logs

Mar 07 2018

#linuxcnc Calendar

12:22 AM miss0r: mornin'
12:27 AM fragalot: mornin'
12:28 AM fragalot: whoops... This is the road to work, according to the news: https://images.vrt.be/width1280/2018/03/07/2b34f37b-21ce-11e8-abcc-02b7b76bf47f.jpg
12:32 AM miss0r: damn
12:38 AM fragalot: morning gloops
12:38 AM gloops: morning
12:39 AM CaptHindsight: fragalot: crane or cement conveyor/pump truck?
12:39 AM fragalot: crane
12:41 AM miss0r: Seems you're in for a detour
12:41 AM fragalot: Yup.
12:41 AM miss0r: unless you drive a tank... Please tell me you drive a tank :D
12:42 AM fragalot: I kept getting pulled over when I drove my tank to work, so I traded it in for something else
12:43 AM miss0r: how?
12:43 AM miss0r: HOW did you actually pull you over?
12:43 AM fragalot: big welded X things
12:44 AM miss0r: https://www.google.dk/search?q=spansk+rytter&tbm=isch&source=iu&ictx=1&fir=QKm_tkZOr8UXlM%253A%252CN5_iwFD7la0RCM%252C_&usg=__ujrgCXTLkgJND7MXd2oe0NL987g%3D&sa=X&ved=0ahUKEwj0vu34zdnZAhUR2aQKHdfIDV0Q9QEIQjAF#imgrc=QKm_tkZOr8UXlM:
12:44 AM fragalot: yup. :P
12:44 AM miss0r: Yeah. I actualy hit one with a tank
12:45 AM Wolf__: CVR(T) would make a fun daily driver
12:45 AM miss0r: Surprisingly effective :] (part of the training)
12:45 AM fragalot: :P
12:46 AM fragalot: I wouldn't mind a DUKW.. Gives me options in case of congestion.
12:47 AM miss0r: I'm not sure what mileage to expect from that
12:47 AM fragalot: one.
12:47 AM Wolf__: https://tanks-alot.co.uk/product/alvis-stalwart-fv620/
12:48 AM fragalot: that'd work
12:48 AM fragalot: bet you can even fit full sheets of plywood in the back
12:48 AM miss0r: I guess, if I had to do a shitty mileage, I would choose a tiger tank :D I've always found that one to be cute
12:48 AM fragalot: it's the ideal contractors' ride.
12:48 AM gloops: https://www.ebay.co.uk/itm/Sultan-Armoured-Command-Vehicle-Tank-Ex-Military-Fresh-Release-Cummins-Deisel/162903978933?
12:49 AM fragalot: miss0r: if you want cute, go for the renault FT
12:49 AM miss0r: gloops: I wonder if I could get that one registerred :D
12:49 AM gloops: im not sure theyre allowed on the road anymore, owing to the tracks
12:49 AM gloops: here anyway
12:50 AM fragalot: gloops: what if you get them rubberized?
12:50 AM Wolf__: rubber tracked are road legal in the UK
12:50 AM gloops: maybe, there used to be quite a few 'ferrets' on the road, seem to have all gone
12:51 AM gloops: http://www.warwheels.net/images/ferret1_2kembleTROWBRIDGE1.jpg
12:52 AM fragalot: I have to say though, i've been to a few of the re-enactment shows in the UK
12:52 AM fragalot: damn impressive to see all those things in action
12:52 AM Wolf__: that same site I linked has a few Ferret
12:52 AM fragalot: ground shaking as the tanks roll past whilst a spitfire does a simulated strafe run
12:55 AM gloops: every town had an army surplus shop when the cold war was on, you could get anything, none of that now, very small army relatively
12:55 AM Wolf__: lol https://tanks-alot.co.uk/tank-limo-hire/
12:56 AM fragalot: the only things that army surplus shops here sell any more are velcro badges and swiss army knives
12:56 AM fragalot: Wolf__: hahah
12:58 AM gloops: Rolls Royce RB199 Panavia Tornado Aircraft Jet Engine - Ex RAF Direct from MOD
12:59 AM miss0r: I need to get myself a good shellmill aprox 50mm. Can you guys recommend something that will not ruin my economy?
01:00 AM gloops: https://www.ebay.co.uk/itm/Rolls-Royce-RB199-Panavia-Tornado-Aircraft-Jet-Engine-Ex-RAF-Direct-from-MOD/222843904646?
01:00 AM fragalot: miss0r: I like these. https://www.phantom.eu/en-us/shell-end-mills/
01:01 AM fragalot: miss0r: some resalers are cheaper than the prices listed on the website
01:01 AM fragalot: but if budget is important.. get a 2nd hand or re-grind
01:01 AM miss0r: I was hoping for a shellmill with inserts :)
01:02 AM fragalot: https://www.phantom.eu/en-us/milling-inserts/
01:02 AM fragalot: :P
01:02 AM miss0r: like this one: http://toolnet.dk/produkter/199000588-0deg/10092-a251-insert-size-12/
01:02 AM IchGucksLive: morning
01:02 AM miss0r: mornin IchGucksLive
01:04 AM IchGucksLive: miss0r is samsoe komplete in self energy
01:04 AM IchGucksLive: it sems it is the world energy playground
01:05 AM miss0r: Depends on how you look at it: samsoe (sams) produces more energy than it needs when looking at it over a year. But the wind is not always blowing enough ;)
01:06 AM miss0r: I mean, people there still have oil fed furnaces
01:06 AM miss0r: so that is a hard question :)
01:06 AM fragalot: miss0r: also, I have a few chinese shell mills, and they're actually great
01:06 AM fragalot: super economical in terms of inserts
01:07 AM fragalot: as it only ever wears out 1 of the 8
01:07 AM miss0r: fragalot: thoes facemills/shell mills are expensive :)
01:07 AM miss0r: lol
01:07 AM fragalot: yeah the public website prices are high.. but like I said, most distributors are like 20% cheaper
01:08 AM miss0r: still
01:08 AM fragalot: at least, esmax.nl is
01:55 AM miss0r: meh. just ordered tooling for 800eur for the mill
02:23 AM Deejay: moin
02:34 AM TurBoss: morning
02:45 AM gloops: hi
02:55 AM gloops: what ya buildin Turboss?
02:56 AM TurBoss: building?
02:56 AM TurBoss: currently I'm at work drawing cubes
02:57 AM gloops: ahh, thought you were making a machine
02:57 AM TurBoss: I did
02:57 AM TurBoss: there is a forum post and some video
02:57 AM gloops: got it going now then?
02:57 AM TurBoss: sek
02:59 AM TurBoss: https://forum.linuxcnc.org/show-your-stuff/32728-fixed-bridge-machine-finished#104042
03:00 AM gloops: that looks well
03:01 AM gloops: i dont know how everyone has so few wires, my box is just a massive ball of wires
03:02 AM TurBoss: hehehehe
03:03 AM TurBoss: not much wires here
03:06 AM TurBoss: gloops do yoy have pics of the spagetti?
03:07 AM gloops: not the current one no, i ripped all the wiring off a couple of weeks ago to do a proper job, still wires everywhere
03:08 AM gloops: just grounding the shielded cable for example is about 10 wires going to a block
04:31 AM XXCoder: gloops: nonecludian wires, thats why you dont see em lol
05:10 AM miss0r: Stupid GLS, its taking them forever to get here with my linear rails
05:13 AM * Loetmichel is sitting here waiting for the CNC to finish that: http://www.cyrom.org/palbum/main.php?g2_itemId=17019&g2_imageViewsIndex=1 to free the CNC for a bit of brass enclosure work... hurry up, machine... :-)
05:14 AM Loetmichel: It takes its sweet time... no wonder though, 2mm mill bit, 0,15mm DOC and 8mm thick material. :-)
05:15 AM XXCoder: loet did you eevr have to replace bushings in it
05:15 AM XXCoder: or is it brushless
05:16 AM Loetmichel: bsuhings?
05:17 AM Loetmichel: thats a three phase spindle
05:17 AM XXCoder: ok
05:17 AM Loetmichel: 800W watercooled chinese stuff, but good enough. After about 6 yeas now it starts to "sing" in the bearings though
05:19 AM gloops: just waiting for a petrol pump to dry out so i can test it
05:31 AM Tom_itx: 25F
05:32 AM jthornton: it's not as cold as they said it would be we are only 38°F
05:32 AM XXCoder: day it was 55f, but it was clear night so its actyually freezng here now
05:36 AM jthornton: time to reboot to the debian hard drive and work on my store a bit
05:41 AM miss0r: I was at the dentist today with a tooth that hurts. I have to go back there on friday and get my root canals done :-(
05:43 AM miss0r: Apparently the root of two teeth are rubbing against eachother deep down, and causing me to have an infection in there :-/
05:44 AM jthornton: cracks me up when I shut down Linux Mint the final screen says Ubuntu 17.3 lol
05:44 AM miss0r: :]
05:45 AM jthornton: ouch, I have a crown scheduled for later this month
05:45 AM miss0r: I wish I 'only' had to get a crown
05:45 AM miss0r: Alot more expensive, but hurts ALOT less
05:47 AM jthornton: I've had a bunch of root canal work over the years and when I was a kid lots of dental work... I can still remember the old cable driven drill he used
05:47 AM miss0r: The worst part today, the destist had to make sure I felt the pain in the correct tooth, so she started banging around with what felt like a medium size mallet in there. She almost sent me flying when she hit the tooth in question. I'm been feeling this tooth since friday, thinking it would pass.
05:49 AM jthornton: ouch
05:50 AM miss0r: Don't get me started on dental work. I've realy been through the works. I had a prostate tooth installed in the back (one of thoes used for chewing). It was done with a titanium screw into the jaw ect. but the realy crazy stuff was, that since i've never grown a tooth there on my own, the jaw was too thin to install the screw. So they moved a piece of jaw from one place to another, while I was just on local annestetic(spell?).
05:50 AM miss0r: I didn't feel a think, but the sound of the miniature circular saw the dentist used in there made damn sure I was one sweaty mofo when I was done
05:50 AM jthornton: just got a large egg, only the second time for a 57g egg
05:50 AM jthornton: yea I hate having to go to the dentist
05:51 AM miss0r: Me too. I've been avoiding it for a while (few years to be exact). But this basicallt forced me. and I'm thinking I should get back to having a regular schedule
05:51 AM miss0r: The thing is: I love chewing food more than I hate the dentist
05:52 AM jthornton: yep
05:52 AM miss0r: I've been thinking of getting chickens myself. How much time do you spend tending to them?
05:54 AM jthornton: about 15 minutes a day to clean the poop out of the coop
05:55 AM jthornton: I spend more time than that with them because I like to sit with them in the evening
05:55 AM jthornton: how much space do you have?
05:55 AM miss0r: alot :)
05:55 AM jthornton: nice
05:55 AM jthornton: do you have a building now to use as a coop?
05:56 AM miss0r: No, i'll need to build one
05:56 AM jthornton: make a walk in coop with good draft free ventilation
05:57 AM jthornton: figure 4 square feet per bird
05:57 AM jthornton: roost 2-4 feet from the floor and nest box lower than the roost
05:59 AM jthornton: https://www.backyardchickens.com/
06:01 AM miss0r: id's say, that sounds like an easy task :) The farm next door offered me a few of his white chickens. Apparently they are rare around here
06:01 AM jthornton: now if I can remember how to setup a php store on localhost for testing...
06:02 AM jthornton: beware of chicken math...
06:03 AM miss0r: chicken math ?
06:03 AM miss0r: as in calculus?
06:03 AM jthornton: yea you will want more lol
06:03 AM miss0r: lol
06:04 AM miss0r: Perhaps. For the time being I would just like a good way to get proper usage from my vegetable peals ect. the eggs are a bonus
06:04 AM jthornton: I have 9 Rhode Island Red pullets and want to get some https://www.cacklehatchery.com/cinnamon-queens.html
06:05 AM miss0r: Please apologise my ignorance: Do you get attached to them?
06:05 AM miss0r: Aren't they waaay to stupid for that ? :)
06:05 AM jthornton: I have a 3 sided box in the chicken yard and put leaves and poop in there, the chickens pull it out and tear the leaves up and I put it back so it gets rotated
06:06 AM jthornton: I have a couple that like to sit on my lap and snuggle up to my arm...
06:06 AM miss0r: okay, that sounds somewhat comfy
06:06 AM jthornton: they all have different personalties
06:07 AM miss0r: I suppose
06:07 AM jthornton: when I eat my banana in the afternoon the chickens get half... it's fun trying to make sure each one gets a bite or two
06:09 AM jthornton: https://www.youtube.com/watch?v=HDHUQuGcpv0
06:48 AM gloops: another successful mechanics job, saved myself 120 quid there for a couple of hours, also means i get tommorrow and friday to work on machine
06:50 AM jthornton: I think I'll just start from scratch again...
06:50 AM gloops: anyone up on belts? got a vintage fretsaw that needs a round belt, like pencil thickness, round rubber belt is sold in strips - do you just glue the ends together with that stuff? its only a treadle machine not motorised
06:51 AM jthornton: the orange ones are melted together
06:51 AM gloops: is that a diy job jthornton? like a hot knife or something?
06:52 AM jthornton: yea that should work, make some kind of guide to hold the ends even pull hot knife out and push ends together
06:52 AM jthornton: bbl reinstalling debian again :(
06:52 AM gloops: or maybe a chord belt with a fastener,no idea what was on it it came with nothing
06:53 AM gloops: k cheers
06:54 AM gloops: https://www.ebay.co.uk/itm/5mm-polyurethane-Round-drive-belting-various-machinery-and-sewing-machines-1m/273042191516?
06:54 AM gloops: there it is
09:13 AM gregcnc_: I wish I had factory VFD parameters for this lathe, but it seems pretty close now. I'll have to fine tune by testing tapping.
09:13 AM gregcnc_: there were several overheat errors stored which explains why someone screwed with the braking params
09:14 AM gregcnc_: I wonder if they bothered to check for the filth I cleaned from the motor fan and fins
09:18 AM JT-Shop: yea a priest wants to transfer 30 million euro's to me :)
09:19 AM gregcnc_: that's enough to retire isn't it
09:19 AM JT-Shop: dunno what you can buy with vapor-money
09:20 AM gregcnc_: tell them you can't accept because you'd spend it on hookers and blow and means hell?
09:34 AM gloops: looking at this again https://www.youtube.com/watch?v=H5ZDFBBiiSE
09:34 AM gloops: what i cant get is that the x,z and c (spindle rotary) share the same beams and servos, that must be difficult to co-ordinate
09:45 AM gregcnc_: it's just math
09:49 AM gloops: but where is this math applied?
09:53 AM gloops: x moves - that movement affects the z position so you need to compensate, this must happen in the control software
10:18 AM enleth: sync: one more interesting detail on evaporust/EDTA - the ammonia salt phosphonate they use is supposedly designed to only bind iron, while EDTA might attack coatings that contain other heavy-ish metals. I'll ask a chemist friend for some more insight, but so far I haven't been able to find any potentially useful chelating agents other than EDTA that could be useful as rust removers and are widely
10:18 AM enleth: available in small quantities
10:19 AM enleth: s/potentially useful// that's what you get when you go back to correct a sentence several times
10:21 AM Deejay: re
10:38 AM hazzy-dev: a 48in watter line broke this morning, so... https://i.imgur.com/c8lDc9R.png
10:39 AM hazzy-dev: We have some watter pressure still, but are supposed to boil
10:39 AM hazzy-dev: So coffee all day, so whats new?
10:39 AM hazzy-dev: :D
10:39 AM gloops: southern uk?
10:39 AM hazzy-dev: No Georgia US
10:40 AM gloops: ah ok, bit of a water shortage here too
10:40 AM hazzy-dev: Its catching :)
10:40 AM gloops: mainly burst pipes from the cold last week
10:41 AM hazzy-dev: It sounds like that cold spell really shut things down
10:43 AM gloops: nothing round here, mainly in some parts of the south, your water problems sound a bit more long term though
10:49 AM gloops: US Weather warning: ANOTHER bomb cyclone forecast – 50cm of SNOW to hit East Coast http://bit.ly/2oO45e6
11:05 AM gloops: US stocks down sharply after trumps top economic advisor quits
11:05 AM gloops: trump says people are queuing up to work for him!
11:56 AM roycroft: trump can go trump himself
11:56 AM Loetmichel: gloops: trum is clinically delusional.
11:56 AM Loetmichel: +p
11:59 AM Rab: That Cohn guy is an investment banker, gotta be a douchebag! Trump is just draining the swamp!
12:03 PM Loetmichel: Rab: the swamp he created you mean?
12:04 PM Rab: Fake news!
12:04 PM Loetmichel: Indeed. there is nothing geniue about trump
12:06 PM SpeedEvil: His hair.
12:06 PM Loetmichel: SpeedEvil: yes. its to bad to be a wig ;)
12:07 PM IchGucksLive: hi all
12:07 PM IchGucksLive: so DT did rescue another big person
12:08 PM IchGucksLive: i think he does it at 6month tiome period to give the person the full penthon for the rest of there days as many he can get in his time period
12:22 PM fragalot: hi
12:23 PM fragalot: CaptHindsight: good news: the "80°C" epoxy only needs post-curing to gain thermal resistance, however I haven't managed to obtain a full spec sheet.
12:24 PM CaptHindsight: \0/
12:25 PM fragalot: going to order 27kg, waste a few kg on trials, then buy more as needed I think
12:26 PM Tom_itx: fragalot, molds all ready to go?
12:27 PM fragalot: Tom_itx: bottom mold is
12:27 PM fragalot: inserts aren't
12:27 PM Tom_itx: you decide if you're gonna vacuum seal it?
12:27 PM fragalot: am going to degas the mixed batches
12:28 PM fragalot: prior to pouring into the mold
12:28 PM fragalot: at least - that's what they recommended, and I think it also makes the most sense given the size of the casting
12:31 PM Tom_itx is now known as Tom_L
12:40 PM SpeedEvil: I wonder if fully dense is actually useful.
12:41 PM gloops: vacuum bagging is more associated with closed molds as far as i know, degassing the mix is more appriopiate for casting
12:41 PM SpeedEvil: That is - imagining rock with 100% epoxy - how much better is this in measurable aspects, versus one that has been made by vacuum stirring so as to produce a coating which is not adequate to fill all the voids.
12:41 PM SpeedEvil: I suspect the answer is 'not much'
12:42 PM fragalot: "made by vacuum stirring" ?
12:42 PM SpeedEvil: fragalot: I mean so as to make a thin coating over the sand/gravel/... without stirring air in
12:43 PM SpeedEvil: So you get fully dense liquid films over the aggregate, without foam.
12:43 PM fragalot: not sure how i'd accomplish that, if not for vacuuming after mixing?
12:43 PM SpeedEvil: While mixing.
12:44 PM gloops: you can lose some air by pouring in a long thin stream - might not be so applicable with a concrete mix though
12:44 PM gloops: 300kg youll be shovelling it in lol
12:45 PM * SpeedEvil looks at his plans for a large vacuum chamber.
12:45 PM gloops: should also remember, as with any concrete - messing about with the mix in the mold will send the coarser aggregates down in the strata and bring the fluid to the top
12:46 PM SpeedEvil: yeah - part of the reason I was wondering about vacuum.
12:46 PM SpeedEvil: though in a different context.
12:46 PM SpeedEvil: If you start out by dry packing the aggregate, then vacuum impregnating it might be possible with no voids and with unusually high solid fraction.
12:46 PM gloops: hmm
12:47 PM roycroft: i just pulled out the venturi-based vacuum pump i built years ago and never used
12:47 PM roycroft: as in yesterday
12:47 PM roycroft: i tested it and it pulls 0.8 bars
12:47 PM roycroft: i'm going to be making some vacuum clamps
12:47 PM SpeedEvil: :)
12:48 PM gloops: you would need a huge pump to be effective on a big mold in itself - store the vaccum, any pump will do
12:48 PM SpeedEvil: roycroft: shop-vac can be excellent as a backup to to this.
12:48 PM roycroft: i built it with a shop vac port
12:48 PM SpeedEvil: gloops: I have quite a large pump.
12:48 PM SpeedEvil: ah
12:48 PM roycroft: i originally built it to do vacuum veneering
12:48 PM roycroft: my intent was to evacuate the bag with the shop vac, then switch over to the higher vacuum source for final clamping
12:49 PM gloops: i cant see why this cannot be done in a laminate anyway
12:49 PM roycroft: it uses a portable air tank from harbor freight as the vacuum reserve chamber
12:50 PM SpeedEvil: https://www.alibaba.com/product-detail/200m2-Large-capacity-continuous-instant-coffee_60708182520.html - relevant.
12:52 PM gloops: i am a little inspired by this kind of technique though, i might do my lathe this way, well from composites anyway, not with epoxy
12:54 PM gloops: mainly because i could make a stunning shape with glossy finish, theres a lot of freedom with casting regarding shapes
12:55 PM gloops: is it better, cheaper, quicker than using welding steel - probably no advantage either way
12:56 PM IchGucksLive: im off Gn8
12:56 PM SpeedEvil: gloops: especially as some lathes are actually using polymer bearing surfaces.
12:56 PM SpeedEvil: Over cast iron
12:57 PM gloops: they are Speedevil? i wouldnt attempt that, id cast some iron in like fragalot is doing and bolt linear bearings to it
12:57 PM fragalot: polymer bearing surfaces are popular for rebuilds, gloops
12:58 PM gloops: you are talking about plastic 'ways' ?
12:58 PM fragalot: yes
12:58 PM fragalot: turcite is a good example
12:59 PM SpeedEvil: PTFE-based
12:59 PM SpeedEvil: That's the name I was trying to rememmber
12:59 PM gloops: well you have to buy those anyway, you would start with steel rails surely if it was an option
01:00 PM SpeedEvil: they're coatings
01:00 PM SpeedEvil: Like tape
01:00 PM gloops: why not just grind the iron back true?
01:01 PM sync: Because it has higher friction and you loose the original height oft the way
01:01 PM fragalot: you lose center height if you grind down the entire bed, gloops
01:02 PM gloops: but plastic ways man? you can lose half a mm with no negative consequence
01:02 PM gloops: you can adjust that up on most tailstocks
01:03 PM fragalot: I haven't seen any tailstocks on lathes that allow you to adjust height
01:03 PM gloops: you can bring the centre up yes, tbh i havent looked by how much, but many have adjustment
01:08 PM CaptHindsight: where do you store vacuum?
01:09 PM CaptHindsight: and how do you know if nothing is there?
01:09 PM fragalot: pressure tank & gauge?
01:09 PM fragalot: both rated for vacuum, preferably
01:09 PM fragalot: adam savage has a nice example on his vacuum form table
01:10 PM gloops: any pressure vessel, compressor tank, gas bottle etc
01:10 PM fragalot: 2 large vacuum tanks to boost the initial "suck", then close those off & finish the rest with a vacuum pump
01:10 PM gloops: you can bring a 200 litre tank to near vaccum with a tyre inflator
01:11 PM gloops: you will need several cups of tea waiting for this to happen though
01:19 PM gloops: whoo we have an ally lol https://www.express.co.uk/news/world/928226/italian-election-5-star-movement-northern-league-eu-brexit
01:24 PM fragalot: 14 days delivery time on the epoxy apparently.
01:24 PM fragalot: well, on the complete order.. (ordered a non-standard vacuum pump :P)
01:24 PM roycroft: i store my vacuum in one of these:
01:24 PM roycroft: https://www.harborfreight.com/11-gal-portable-air-tank-69717.html
01:24 PM roycroft: i don't need to store too much
01:24 PM roycroft: i try not to suck too much
01:25 PM fragalot: cheap
01:25 PM roycroft: yes
01:25 PM roycroft: i really like the ventury vacuum pumps
01:25 PM roycroft: they do a good job, and are really quiet
01:25 PM roycroft: 65dB
01:25 PM fragalot: sometimes, I wish we had shops like harbor freight here
01:25 PM roycroft: venturi
01:26 PM gregcnc_: don't you have equally terrible tools stores tehre?
01:26 PM roycroft: folks in the vacuum veneering world use schedule 40 pvc pipe as vacuum chambers
01:26 PM roycroft: and old welding cylinder would work
01:26 PM gloops: if you have the balls you can just drill a propane bottle and tap it for airline fittings
01:26 PM fragalot: gregcnc_: we do, except they have a much more limited selection
01:26 PM roycroft: or propane tank
01:26 PM gregcnc_: I have small vacuum tank made from PVC pipe
01:26 PM fragalot: gregcnc_: "here we have 3 screwdrivers."
01:26 PM fragalot: oh you want a nail gun? look! we have one of those!
01:27 PM gregcnc_: HF is no different they have only their crappy dispoables
01:27 PM roycroft: i'll take a picture of the vacuum pump i made when i get a chance
01:27 PM roycroft: the parts cost me about $200 total
01:27 PM roycroft: and as i said earlier, i get 0.8 bars of vaccum
01:27 PM roycroft: which is plenty for what i need to do
01:28 PM roycroft: if you're trying to degas epoxy 0.7 bars would probably be fine
01:28 PM gregcnc_: a bought a few small gast pumps for next to nothing a long time ago, maybe a hamfest
01:28 PM roycroft: gast pumps are popular
01:29 PM roycroft: for that very reason
01:29 PM roycroft: they work and they can be had cheap
01:29 PM gregcnc_: clean the reeds and they are good
01:30 PM fragalot: gregcnc_: sure, but at least they have a wider range
01:30 PM roycroft: but they are noisier than venturi pumps
01:30 PM gregcnc_: assuming your compressor is quiet or in your neighbor's garage
01:31 PM roycroft: my compressor is outside my shop
01:31 PM roycroft: so yeah
01:31 PM gloops: i would make the most of cheap hardware, things could change very quickly the way things are heading
01:32 PM roycroft: if the compressor is next to your left calf then the venturi pump gets really noisy
01:34 PM fragalot: not the most efficient way though, power wise?
01:38 PM CaptHindsight: I have some proper vacuum pumps that go down to a at least a few microns
01:40 PM fragalot: the one I just bought claims to go to 0.003 at 6M³/hr
01:43 PM roycroft: i suppose it all depends on how you use it
01:43 PM CaptHindsight: I've heard that before
01:44 PM roycroft: for my purposes, efficiency is not a big deal, as my use will be to pull a vacuum and hold it
01:44 PM roycroft: i.e. continuous run is not going to happen
01:44 PM roycroft: the bags/clamps will seal fairly well, and the pump will only cycle intermittently
01:44 PM roycroft: that's the plan, at least
01:48 PM fragalot: CaptHindsight: to protect the pump itself, do you just have an intermediate chamber, or how do you protect it when vacuum bagging?
01:52 PM fragalot_ is now known as fragalot
01:53 PM roycroft: i have a vacuum sealer, and the pump is directly connected to the chamber where i put the bags full of food and stuff
01:53 PM roycroft: what do you mean by protecting the pump?
01:54 PM fragalot: roycroft: to prevent epoxy and other nasties being pulled into the pump
01:55 PM roycroft: aah
01:55 PM roycroft: my vacuum sealer has a filter
01:56 PM roycroft: but the main way i keep stuff from getting sucked in is by watching it
01:56 PM roycroft: there is a clear cover
01:56 PM roycroft: if i start seeing liquids boil vigorously i manually kick the sealing bar on
01:56 PM roycroft: that does not normally happen though
01:59 PM fragalot: liquids boiling vigorously is kinda what you want when degassing epoxy though :P
02:01 PM roycroft: i'm not sure about the vigorous part
02:01 PM roycroft: perhaps
02:02 PM roycroft: when i'm sealing food, the only time it boils vigorously is when the food is mostly liquid and it's too warm
02:02 PM roycroft: i.e. if i make a pot of soup and don't chill it before vacuum sealing it in bags
02:06 PM Jymmm: vac food bags are way too expensive (at least n the US)
02:07 PM Jymmm: I prefer mason jars =)
02:07 PM roycroft: not chamber vacuum bags
02:07 PM roycroft: they cost 1/10 what those quilted seal-a-meal bags cost
02:07 PM Jymmm: mason jars and this http://www.foodsaver.com/accessories-and-parts/jar-and-bottle-sealers/foodsaver-wide-mouth-jar-sealer/T03-0023-01P.html
02:08 PM roycroft: one reason i got a chamber vacuum sealer
02:08 PM Jymmm: roycroft: "chamber bags" ? link?
02:08 PM roycroft: also, it pulls a better vacuum than the seal-a-meal things
02:09 PM roycroft: i use this:
02:09 PM roycroft: https://www.webstaurantstore.com/ary-vacmaster-vp112s-chamber-vacuum-sealer/120VMASVP112.html
02:10 PM roycroft: https://www.webstaurantstore.com/vacpak-it-10-x-13-chamber-vacuum-packaging-pouches-bags-3-mil-case/186CVB1013.html
02:10 PM roycroft: for example, for the bags
02:10 PM roycroft: you can't use them reasonably with a seal-a-meal
02:11 PM roycroft: if you're a survivalist and you want to store your food for 20 years you can use mylar bags with the vacuum sealer i have, but those bags are pretty expensive
02:11 PM Jymmm: both are actually
02:11 PM roycroft: and if you're doing that you probably also want a chamber vacuum sealer with a nitrogen flush feature, and those are about $2k
02:12 PM Jymmm: with the bags you linked to, are those the same like you might find product on peg boards at a store?
02:12 PM roycroft: no, not at all
02:12 PM roycroft: the reason that the seal-a-meals use quilted bags is because they suck the air out of the bag
02:13 PM roycroft: and the quilting provides passages for the air to escape
02:13 PM Jymmm: Pics of clear bags on a grey background dont work too well for detail =)
02:13 PM * fragalot simply uses wecking jars
02:13 PM roycroft: if you try to use smooth bags as soon as it starts sucking the bag will close up
02:13 PM fragalot: anything that survives wecking deserves to live.
02:13 PM roycroft: with a chamber sealer the pressure is equal inside and outside the bag, so there's no need for those passages
02:14 PM Jymmm: roycroft: I'm not questioning the chamber sealer, just the bags you are using compared to "off the shelf PE bags
02:14 PM roycroft: i haven't seen any on pegs in stores that are similar to the ones i sue
02:14 PM roycroft: use
02:15 PM roycroft: you can try them, i suppose
02:15 PM Jymmm: It looks liek your bags have a 1/4" "seal" on at least three sides
02:15 PM roycroft: but they're probably a bit thin
02:15 PM roycroft: yes
02:15 PM roycroft: and the sealing bar makes a double seal, each of which is about 6mm wide
02:15 PM roycroft: i've used them for sous vide
02:15 PM roycroft: and they hold up fine, with no leaking
02:16 PM roycroft: and they freeze brilliantly, of course
02:16 PM roycroft: i don't think they're expensive - the ones i linked to are rather large, and >7 cents each
02:16 PM Jymmm: roycroft: Have you ever filled a bag with water, sealed it, and dropped 6ft on to concrete or down a flight of stairs?
02:16 PM roycroft: seal-a-meal bags that size are like 75 cents each
02:16 PM roycroft: i have not
02:17 PM roycroft: i don't treat my dinner that way :)
02:17 PM Jymmm: roycroft: The next to you are sealing stuff, could you and post video?
02:17 PM roycroft: i'll try to remember to do that
02:17 PM roycroft: i should anticipate that i would need to go outdoors to do it
02:18 PM Jymmm: roycroft: I've done it from 4ft drop down 4 stairs
02:18 PM roycroft: because it will likely be messy
02:18 PM roycroft: but i might be pleasantly surprised
02:18 PM roycroft: if i pop it in the freezer for a few hours first it would not make a mess at all :)
02:18 PM Jymmm: roycroft: I filled a bag with one gallon of water (8 pounds)
02:20 PM Jymmm: roycroft: you might be surprised of frozen bag might hit a pebble and put in a pin hole
02:21 PM roycroft: sure, but it would not make a mess right away
02:22 PM Jymmm: true
02:23 PM Jymmm: roycroft: But I really am curious about the drop test, it be nice to seal things without having to worry about them
02:24 PM Jymmm: roycroft: can you "boil in the bag" by chance?
02:24 PM Jymmm: or have you I should say?
02:24 PM methods_: https://www.cnbc.com/2018/03/07/bitcoin-just-tanked-below-10000-after-sec-says-crypto-exchanges-must-register-with-agency.html
02:24 PM methods_: in case any of you crypto currency people haven't heard yet
02:27 PM gloops: saw that earlier but i dont have any bitcoin
02:27 PM methods_: i had one but i lost it
02:27 PM fragalot: I did, back when they were worthless
02:27 PM methods_: yeah
02:27 PM fragalot: i'm one of the proud owners of quite a lot of "lost" coins
02:27 PM methods_: was kinda kickin myself in the butt when they were up to liek $20k
02:27 PM fragalot: you were?
02:28 PM fragalot: I could have paid off my house and dim some, lol
02:28 PM fragalot: but, to be honest, even if I hadn't lost them, i'd have sold them aaages before they raised to 20k anyway
02:28 PM gloops: no good crying over spilled milk, as granny would say
02:29 PM Jymmm: https://www.coindesk.com/us-judge-rules-cryptocurrencies-are-commodities-in-cftc-case/
02:29 PM fragalot: gloops: yarp :-)
02:30 PM fragalot: Jymmm: in summary; what does that mean?
02:31 PM Jymmm: fragalot: cryptofuckedwithnovaseline
02:32 PM roycroft: i haven't boiled in the bag, but i've done sous vide, at ~65 degrees or so
02:32 PM Jymmm: fragalot: basically "regulation"
02:33 PM roycroft: if i sell my bitcoin i wonder if i can write off the electricity i used to mine it
02:33 PM Jymmm: roycroft: any reason you couldn't boil int he bag?
02:33 PM roycroft: one should be able to, jymmm
02:33 PM roycroft: i just haven't done so
02:33 PM fragalot: Jymmm: ah.
02:33 PM roycroft: i have thawed and reheated in the microwave
02:33 PM roycroft: thawing is not a problem
02:34 PM Jymmm: roycroft: sealed in the microwave?
02:34 PM roycroft: reheating can be explosive unless one cuts a vent hole
02:34 PM Jymmm: =)
02:34 PM roycroft: what i often do is thaw in the sealed bag
02:34 PM roycroft: then open the bag, put the contents in a bowl, and reheat that way
02:34 PM roycroft: it gets messy cutting a vent hole in a bag of soup
02:35 PM Jymmm: roycroft: you dont vac seal soup, do you?
02:36 PM gloops: Asylum seeker who fled poverty and violence says she is even worse off in UK https://www.mirror.co.uk/news/uk-news/asylum-seeker-who-fled-poverty-12144268 … LOL
02:36 PM fragalot: I can believe that
02:37 PM Jymmm: nm
02:39 PM gloops: its grim up north
02:42 PM Jymmm: What is "G4S" ?
02:42 PM fragalot: security compan
02:42 PM fragalot: y
02:43 PM gloops: security/public services etc
02:43 PM Jymmm: ah
02:43 PM gloops: run prisons stuff like that
02:44 PM fragalot: money transport
02:44 PM gloops: this is where 'asylum' gets into a grey area
02:45 PM Rab: “Now, I’m scared, really. I didn’t know England was like this. Oh my God. I thought it was a heaven.”
02:45 PM gloops: she ought to be saying - thank god im not going to be shot or raped
02:45 PM gloops: not - i should have nicer furniture
02:46 PM Jymmm: I mean, I gethe whole fix the damn window, but "raped and murdered" VERSUS "cold cramped room".....
02:46 PM gloops: 'i thought it was heaven' - thats why she really came, no doubt given that impression by the trafickers who took her fare
02:46 PM fragalot: you hear a lot of similar stories
02:47 PM fragalot: "I heard it was all still in need of rebuilding after WWII"
02:47 PM fragalot: lots of lies told by traffickers
02:48 PM gloops: people come from africa and think theyre going to be driving porsches and living in posh hotels
02:49 PM gloops: when they grasp the reality - theyre going to be working menial jobs for exactly the amount it costs to eat and pay the rent
02:49 PM fragalot: it's a fine balance, figuring out how much to pay someone
02:50 PM fragalot: don't pay enough, and they leave immediately
02:50 PM fragalot: pay them too much, and they save up so they can leave
02:50 PM fragalot: what you need is to get them confident to go deep in debt to buy a house
02:50 PM gloops: yes
02:50 PM fragalot: that way they can't afford to leave. :-)
02:51 PM FinboySlick: fragalot: You never told us you got an MBA ;)
02:51 PM gloops: house, kids, credit card, financed cars and kitchens etc
02:51 PM fragalot: FinboySlick: I do, actually. :)
02:51 PM fragalot: ME and EE too
02:52 PM FinboySlick: Glad to see they haven't lowered their standards of evil.
02:54 PM gloops: Greggs now employing full-time 'bouncers' to stop thieves and troublemakers < its getting worse
02:54 PM fragalot: christ
02:54 PM gloops: when the sandwich shop has bouncers lol
03:26 PM Jymmm: Had a question...
03:27 PM Jymmm: The gutters get pine needles, pine cones, snow, ice, water, then the downspouts get clogged and are useless, overflowing the gutters.
03:27 PM Jymmm: The downspouts, are 2x3 (?) rectanguar.
03:28 PM Jymmm: maybe 3x4, whatever
03:28 PM Jymmm: I was thinking... what event eh END of the gutter had a elbow that fed a 4" or 6" PVC pipe downspout.
03:29 PM Jymmm: Then everything would "flow" smoothly, no matter what size
03:30 PM Jymmm: The gutters transition from a 3" hole (bottlenek) to the 3x4" downspout
03:31 PM fragalot: i'm sure that would work fine
03:32 PM Jymmm: The thing is, going from THE END of rectangular metal gutter to 4" round pvc
03:32 PM roycroft: the problem is that the stuff that clogs the gutters tends to settle down into the gutters when there is not a lot of current flow
03:32 PM roycroft: and jams itself up pretty well
03:32 PM fragalot: ah, I didn't know your gutters were square
03:32 PM roycroft: certainly the downspout tubes get jammed first
03:33 PM Jymmm: roycroft: ALL OF THEM
03:33 PM roycroft: but your proposed solution won't solve the problem
03:33 PM roycroft: it will just delay onset
03:33 PM gloops: get some of those gutter brushes
03:33 PM gloops: like a big pipe cleaner
03:33 PM Jymmm: roycroft: Sorry, not the downspouts themselves, but the transition point (gutter inserts ?)
03:33 PM roycroft: or get some of those gutter shields
03:33 PM Jymmm: roycroft: useless
03:33 PM fragalot: raise the roof
03:33 PM roycroft: yeah, i know what you mean
03:33 PM fragalot: get above the tree line
03:33 PM Jymmm: fragalot: that would be 65ft up
03:34 PM roycroft: gutter shields, if fitted properly, work pretty well
03:34 PM fragalot: Jymmm: people have built taller
03:34 PM roycroft: i'm talking about the ones that are slightly curved
03:34 PM gloops: https://www.ebay.co.uk/itm/BLACK-Hedgehog-Gutter-Brush-Leaf-Guard-Leaf-Filter-4m-Length/162553458086?
03:34 PM Jymmm: roycroft: not on the 8" pine needles, they get into EVERYTHING =)
03:34 PM roycroft: where the water curves down underneath and falls into the gutters, but the debris just slips off the ends
03:34 PM roycroft: or just go gutterless :)
03:35 PM roycroft: be daring!
03:35 PM Jymmm: roycroft: I was thinking instead of the downspout being in the "middle of the gutter, compeltely open the END of the gutter and attach there
03:35 PM Jymmm: roycroft: then even pinecones and go down
03:35 PM Jymmm: can*
03:35 PM fragalot: Jymmm: can you increase the angle of the gutter?
03:35 PM fragalot: to make it flow faster?
03:36 PM Jymmm: fragalot: still clogs at the transition point being the issue
03:36 PM fragalot: get rid of the transistion points like you said
03:36 PM fragalot: big gutter going into even larger (or shaped) elbow at the end..
03:37 PM Jymmm: I was thining cutting the top of this (left side) and make it the dowspout transition https://images.homedepot-static.com/productImages/84116cea-c35c-4785-96d3-393e802c5dce/svn/tees-wyes-c4811hd4-64_1000.jpg
03:37 PM Jymmm: like a saddle of sorts
03:38 PM Jymmm: then I can "open up" the bottom of the gutter
03:38 PM fragalot: can't you buy premade saddles?
03:38 PM Jymmm: fragalot: I havne't seen 4" ones
03:38 PM fragalot: hm
03:38 PM Jymmm: fragalot: The gutter bottom wisth is like 3", top is 4" or so, 6" deep
03:40 PM fragalot: I think your best bet is simply a non interrupted gutter with an open end
03:40 PM fragalot: and fit the open end into a large elbow
03:41 PM Jymmm: I think so too, just not sure how to fit a round pvc fitting to a 6"x4" gutter
03:42 PM Tom_L: 3d print one
03:42 PM Jymmm: and if it will actually work as expected =)
03:42 PM fragalot: Jymmm: heat gun & a wooden block in the right shape?
03:42 PM * Jymmm hot glues Tom_L to the ceiling then places broken glass bottles on the ground under him
03:43 PM Jymmm: fragalot: Hmmmm, I like the wooden block idea, but I have a MUCH better heat soruce for bending PVC
03:44 PM fragalot: use that then
03:44 PM fragalot: :P
03:44 PM gloops: use a bath hopper
03:44 PM Jymmm: Ok, second thing...
03:44 PM Jymmm: 4" or 6" vc pipe AS a gutter???
03:45 PM Jymmm: The idea is slit the pipe lengthwise, the bend into a U or J shape
03:45 PM Jymmm: One issue PVC isn't usually UV proof
03:45 PM gloops: https://www.ebay.co.uk/itm/Marley-RH252-Hopper-Head-68mm-Round-65mm-Square-Rainwater-Downpipe-Outlet-Pipe/282362924297?
03:45 PM Jymmm: the other is summer heat beating down on it
03:46 PM fragalot: Jymmm: PVC gutters do last a while, but I guess we don't have as much sun as you do
03:46 PM fragalot: the one on the garden shed has held up for ~30yrs now
03:46 PM XXCoder: https://www.youtube.com/watch?v=G9-N-nIqc4g interesting
03:46 PM gloops: you can get deepflow upvc gutter too
03:47 PM Jymmm: fragalot: Right PVC GUTTERS, which have UV attitive in them, not PVC pipe
03:47 PM fragalot: XXCoder: that sounds like something someone would invent to circumvent a patent
03:48 PM fragalot: Jymmm: Well then!.... make your own zinc ones
03:48 PM XXCoder: its supposely a CVT, so there is no discrate steps
03:48 PM Jymmm: gloops: Hmmm, I tried looking for that in the US a ways back, thanks
03:48 PM XXCoder: which is pretty cool in some ways
03:50 PM XXCoder: after initial failure and fix, it works pretty well.
03:51 PM gregcnc_: Different takes on that idea exist. I don't think the ratcheting type were used in much of anything
03:51 PM fragalot: isn't a hydraulic implementation much smoother?
03:51 PM fragalot: variable stroke pumps/motors
03:52 PM gregcnc_: and the output isn't continuous velocity
03:53 PM gregcnc_: if efficiency doesn't matter all kinds of stuff works
03:54 PM fragalot: torque converter. go flat out all the time.
03:56 PM Deejay: gn8
03:57 PM XXCoder: theres bunch of things where motion isnt constant would be fine anyway
03:57 PM XXCoder: but yeah dunno
03:57 PM fragalot: XXCoder: look at the transmission used in the köningsegg hybrid
03:58 PM XXCoder: looking up
03:58 PM gregcnc_: https://en.wikipedia.org/wiki/Constantinesco_(automobile)
03:59 PM gregcnc_: hah there is none
03:59 PM XXCoder: https://www.youtube.com/watch?v=glf_k4qGBAA ?
04:01 PM fragalot: XXCoder: that's the one
04:01 PM fragalot: I love their take on things though
04:02 PM sync: fragalot: it is just a torque converter
04:02 PM XXCoder: looks like it uses some sort of fluid for momemium transfer?
04:02 PM fragalot: hybrid to "save the environment"? nah. we need to make up for a bad torque curve of petrol engines!
04:02 PM fragalot: sync: it is. but very compact for it's power throughput
04:02 PM sync: I wouldn't say very
04:02 PM sync: it seems to be about as big as others are
04:03 PM fragalot: do others pass 1500hp ?
04:05 PM gregcnc_: I'm pretty sure torque converters are pretty well engineered by now
04:05 PM fragalot: not saying they aren't
04:06 PM fragalot: I just liked the koeningsegg one.
04:06 PM gregcnc_: what's different about it?
04:06 PM sync: yes
04:07 PM fragalot: super light weight, high rpm range
04:07 PM gregcnc_: so it's not cheap, anything else?
04:07 PM fragalot: it's shiny
04:08 PM fragalot: and exclusive
04:08 PM gregcnc_: i would like to see his valvetrain become common, but it may be too late
04:56 PM ziper: i dont get how torque converters actually increase torque
05:26 PM andypugh: Well, they convert torque to more torque :-)
05:26 PM phaxx: \m/
05:34 PM Rab: Same way as a gearbox, right? Just through a variable fluid coupling. High velocity/low torque --> low velocity/high torque.
05:35 PM Rab: https://en.wikipedia.org/wiki/Torque_converter
06:17 PM dioz: any good youtube channels? watched this old tony, alex steele, the one where the guy makes the clock.
06:17 PM dioz: any suggestions #linuxcnc ?
06:22 PM andypugh: dioz: https://www.youtube.com/watch?v=7hCPODjJO7s
06:23 PM andypugh: Also, Keith Fenner, AvE, Abom
06:24 PM andypugh: NYC CNC
06:25 PM Tom_L: andypugh what years did they make the 'original' mini cooper?
06:26 PM Tom_L: the small one
06:32 PM andypugh: You mean the “Mini” that was mini?
06:32 PM Tom_L: yeah the 'real' one
06:32 PM andypugh: They made the Cooper form 1961 to 1971, but the actual Mini was made from 1959 to 2000.
06:33 PM Tom_L: a prof here had one he restored along with a jensen healey
06:33 PM Tom_L: always ran hot though
07:09 PM jensor: I am having trouble with the ocode conditonal. Is nit possible to "nest" o100 if commands?
07:10 PM jensor: I am having trouble with the ocode conditonal. Is it possible to "nest" o100 if commands?
07:14 PM Tom_L: http://linuxcnc.org/docs/2.7/html/gcode/o-code.html
07:17 PM CaptHindsight: Tom_L: have you done any brute force testing of the mill yet? Say 1" roughing end mill on some stainless? :)
07:19 PM jensor: I've been to that link. They say nothing about nesting IF commands. I think it would be natural to be able to have that capability especially for novice programmers like me.
07:22 PM greeniron is now known as ty2u
07:22 PM CaptHindsight: http://twistedsifter.com/videos/dropping-ice-down-90m-borehole-in-antarctica/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Twistedsifter+%28TwistedSifter+%29
07:23 PM Tom_L: CaptHindsight do you know if shars had cad models?
07:23 PM Tom_L: has*
07:23 PM CaptHindsight: never seen any
07:23 PM Tom_L: yeah i couldn't find any... just wondered
07:24 PM Tom_L: i don't even have any 1" holders :D
07:24 PM jensor: I broke a 1/8" carbide 3 flute 1/2' loc end mill running in aluminum up what I thought was very conservative. I set up for 4000 rpm, 18 ipm feed, was cutting .030 deep when it snapped. I was very puzzled at first then found the mill to be running at 900 rpm. oh well.
07:25 PM Tom_L: mine does 4k at 8ipm pretty good at full width cut
07:25 PM Tom_L: 1/8"
07:25 PM Tom_L: but then i broke a 4flute carbide cutting steel
07:25 PM Tom_L: finished with hss with no problems
07:26 PM Tom_L: CaptHindsight, the spindle is still the bottleneck
07:26 PM Tom_L: i did a pile of softjaws the other day
07:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Final/Softjaws1.jpg
07:27 PM jensor: whats the notch for?
07:28 PM Tom_L: it was just some scrap material i had
07:28 PM Tom_L: saw cut from a prior job
07:28 PM Tom_L: doesn't matter on softjaws
07:28 PM jensor: ok
07:29 PM Tom_L: for holding stuff like this: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/A12_softjaws_1inch.jpg
07:30 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/A12_visejaw.jpg
07:30 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/A12_P2_2.jpg
07:33 PM malcom2073_: Nice, I enjoy seeing how people hold odd shaped parts
07:33 PM Tom_L: we used those alot for stuff like that
07:35 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/Extra/A12_finished.jpg
07:35 PM Tom_L: finished, those were some setup parts
07:35 PM Tom_L: some kind of latch
11:36 PM fragalot: morning