#linuxcnc Logs

Dec 19 2017

01:01 AM IchGucksLive: hi
01:04 AM rebecca: hi IchGucksLive
01:04 AM IchGucksLive: ;-)
01:06 AM IchGucksLive: some xmas milling to day
01:06 AM rebecca: cool. i'm working on my cnc design
01:08 AM IchGucksLive: size
01:08 AM gloops: show us rebecca?
01:09 AM IchGucksLive: rebecca: where in the world are you
01:09 AM IchGucksLive: im in germany
01:09 AM IchGucksLive: gloops: haye ice at your space ?
01:09 AM rebecca: likely using 1400x1000x600 linear slides.
01:10 AM rebecca: still refining my sketches at this point
01:10 AM rebecca: sydney, aust
01:10 AM IchGucksLive: rebecca: like this http://heimwerkermarkt-tretter.de/holzcnc.jpg
01:11 AM gloops: Ich no ice today its warming up - 8 C
01:11 AM IchGucksLive: rebecca: or more like https://www.youtube.com/watch?v=BzqN-yL2LGs
01:12 AM gloops: thats about the size im making now
01:12 AM rebecca: IchGucksLive: aiming for more rigid than that, but with that kind of ply (formply) and linear slides rather than rails
01:12 AM IchGucksLive: yes the sets are quite cheep and in good size
01:13 AM gloops: slides - like rollon ?
01:13 AM gloops: big £££s
01:13 AM IchGucksLive: sqare rails
01:13 AM rebecca: yeah. square rails
01:13 AM gloops: oyes seem to be the favoured option
01:14 AM rebecca: might be a little overkill on a plywood cnc, but i plan to use a rather heavily reinforced design
01:15 AM gloops: well i cant say how round rails work yet - im using them, they slide great and cant find any play, but until ive actually used them for work i dont know
01:15 AM IchGucksLive: https://www.ebay.com.au/itm/HSS86-Hybrid-Servo-Driver-NEMA34-Closed-Loop-Speed-Stepper-Motor-8N-m-0-3000RPM/112686422530
01:16 AM IchGucksLive: this ist the brest servos to go for in AU
01:16 AM gloops: round rails are a bit more forgiving for installation as well
01:18 AM rebecca: gloops: well, machine some Alu parts and report back!
01:18 AM gloops: should be running next week
01:19 AM gloops: the tests comparing round v square dont show much difference in accuracy, the square rails are a bit better for deflection
01:20 AM rebecca: IchGucksLive: interesting. i was going to test nema23 + tb6600 drivers
01:20 AM gloops: for example if you mount them vertically and the gantry is riding on them
01:20 AM IchGucksLive: rebecca: as rigged as this one https://www.ebay.com.au/itm/CNC-ROUTER/253268191098
01:20 AM rebecca: but probably include mounting holes for nema34 if upgrade is needed
01:20 AM elektron_: moin moin
01:21 AM gloops: the size of the machine is pretty irrelevant regarding motor size
01:21 AM IchGucksLive: rebecca: cabinett like this http://heimwerkermarkt-tretter.de/4achs_elek
01:21 AM IchGucksLive: this are tb6600
01:21 AM gloops: a nema 23 pushes the same over 500mm as it does over 2400mm, motor size is determined by speed and strength specs
01:21 AM IchGucksLive: if you can go for the new 566
01:22 AM IchGucksLive: or even the older 542M use them
01:22 AM rebecca: gloops: yeah
01:22 AM IchGucksLive: rebecca: invest in the mashine stability first then EL as gloops said
01:22 AM rebecca: i have a bit of a problem with my plan though. i really like GRBL for machine control
01:23 AM rebecca: but, i want to use a ATC spindle and other advanced options which would exceed the output control of grbl
01:23 AM gloops: not used it, ive watched various discussions about it, it has its pros and cons
01:24 AM rebecca: yeah
01:24 AM IchGucksLive: rebecca: rack Toolchanger
01:24 AM rebecca: ?
01:24 AM IchGucksLive: 12 tools on side of mashine lockated to be grapbed
01:25 AM rebecca: yeah. i know how they work
01:25 AM IchGucksLive: this cabinett can handle this all http://heimwerkermarkt-tretter.de/4A_cab.jpg
01:25 AM IchGucksLive: its a full 5A
01:26 AM rebecca: although i was pondering a tool change rack on the linear slide mechanism that hangs off the end of the bed. so that it can be recessed below the bed during normal operation and not eat up bed space
01:26 AM rebecca: or obstruct overhanging stock
01:26 AM IchGucksLive: if you like it
01:27 AM IchGucksLive: rebecca: as yoiu say Wood and Tb6600 i think you will not go for a MESA
01:28 AM rebecca: hm?
01:28 AM IchGucksLive: then go for this BOB its cheep and it keeps you all open to go Ethernet https://www.youtube.com/watch?v=I00ArvYvZgI
01:28 AM gloops: i wouldnt go for tb6600
01:28 AM IchGucksLive: the plugs are JST-XH-3s
01:29 AM IchGucksLive: gloops: they are ok for that size
01:29 AM IchGucksLive: and can be easy replaced by the newer poer ones
01:29 AM IchGucksLive: rebecca: 36V min
01:30 AM rebecca: yeah
01:30 AM IchGucksLive: going for 48V and M542 is the better way
01:31 AM rebecca: hmmmm
01:31 AM IchGucksLive: its 30AU eatch
01:31 AM rebecca: IchGucksLive: you have used linuxcnc with closed loop steppers?
01:31 AM gloops: these sets work out cheaper and better drivers - http://www.ebay.co.uk/itm/EU-FreeFreight-3axis-Nema23-stepper-motor-425oz-in-3A-motor-driver-CNCmachine/161866817368?
01:31 AM IchGucksLive: yes its the same as with normal
01:32 AM gloops: 10 Nm steppers will pull the machine to bits lol
01:32 AM IchGucksLive: for your size its 4,5Nm
01:32 AM rebecca: is linuxcnc aware of the stepper position or is the feedback just to the controller to maintain steps and report error if steps fail?
01:32 AM IchGucksLive: but the 3Nm will give you also a good working mashine
01:33 AM gloops: and remember you cant use that motor power unless you have a powerful spindle
01:33 AM IchGucksLive: rebecca: depends on the hardware you got MESA can read this
01:33 AM gloops: or screws / drive for high speed
01:33 AM IchGucksLive: rebecca: in standard only the controller knows
01:34 AM IchGucksLive: rebecca: you got the option on pausing the G-code when a stepperdriver tells steploss
01:34 AM IchGucksLive: and it starts over when it gets green
01:34 AM rebecca: that does sound like a nice feature.
01:35 AM rebecca: particularly with dual steppers driving each side of X axis. little concerned what might happen if one of them fails
01:35 AM IchGucksLive: http://www.ebay.com.au/itm/NO-VAT-3Pcs-DM556D-Digital-Stepper-Motor-Driver-50V-5-6A-for-CNC-Router-Machine/112680916063
01:35 AM IchGucksLive: this are the best in the Way standard
01:35 AM gloops: rebecca machine jams
01:35 AM IchGucksLive: im off xmas milling
01:38 AM rebecca: gloops: btw: i already have the nema23 + tb6600 on order so i'll be starting with them
01:39 AM gloops: the 6600 gets some criticism, bizarre results, ive bought one for my z, ill try it but am expecting to replace it
01:39 AM rebecca: ahhhh
01:39 AM rebecca: well, they were pretty cheap hehe
01:40 AM gloops: its difficult to know what advice is right
01:40 AM gloops: thats why i got one lol, was one short
01:41 AM rebecca: ahh
01:42 AM gloops: surprising how strong the nema 23s are, my other machine one motor pushed a heavy iron gantry very fast
01:43 AM rebecca: https://www.fasttech.com/p/9323600 + https://www.fasttech.com/p/4738400
01:43 AM rebecca: it might be garbage but it's something to test and play with at least
01:44 AM gloops: but as i said, its no good adding massive servos to a machine designed for stepper motors, you cant use that power, the small spindle will stall, the screws wont allow high speeds, the frame wont be rigid enough, you need an entirely upgrade machine
01:44 AM rebecca: well, i'm looking at ~3kW spindle
01:45 AM rebecca: although probably with a VFD configured for ~2kW
01:45 AM rebecca: because i don't trust my wiring to actually deliver 3kW
01:47 AM gloops: the motors should be ok, im used to seeing the torque in oz's
01:47 AM gloops: 3kw is powerful, what are you cutting?
01:48 AM rebecca: want to be able to machine up to soft metals, ie: Al, brass
01:49 AM rebecca: what that really means is a good question
01:49 AM gloops: well i dont suppose you can overdo it with the spindle, usually reccomend 1.5 - 2.2kw
01:50 AM rebecca: yeah
01:51 AM rebecca: the last professional machine i operated had a 3kW spindle and i had good feel of it's limits
01:51 AM gloops: the issue for you is going to be deflection
01:51 AM rebecca: yeah
01:52 AM gloops: if you are building it all from wood?
01:52 AM gloops: so that is going to limit the feed and depth you cut with
01:52 AM rebecca: yeah
01:53 AM gloops: it will cut nice and steady
01:53 AM rebecca: i think my approach will be rigid enough for my needs. not needing to heavily mill stuff.
01:53 AM rebecca: and ultimately this machine will be a stepping stone to a larger one
01:54 AM rebecca: but first things first :D
01:54 AM rebecca: it's the biggest machine i can fit in my shed hehe
01:54 AM gloops: work out what you think will be strong enough, and double it
01:54 AM archivist: make a bigger shed :)
01:54 AM rebecca: lol, shed isn't expandable. moving houses too soon for that.
01:55 AM rebecca: yeah. going to super laminate and reinforce the design
01:58 AM gloops: ill say this, ive got 2 half inch ally plates here, they bend 1mm with hand pressure
01:59 AM gloops: ive got 2 same size mahogany boards but 30mm thick, they dont bend at all with same pressure
01:59 AM gloops: and...the mahogany is flatter than the ally LOL
02:01 AM archivist: add a web to make it T shape
02:01 AM gloops: i think it will work with rails to brace it, the rollon rails are U shaped very stiff
02:02 AM gloops: the mountings are 6 inch steel blocks
02:02 AM gloops: so that will add some bracing
02:05 AM Deejay: moin
02:06 AM gloops: these are only 4 wheel rollon though, the 7 wheel would be better, worth a shot though i think, i cant find any give in them
03:02 AM dan3wik is now known as absynth
03:37 AM absynth is now known as dan2wik
04:32 AM jthornton: morning
04:33 AM malcom2073: Morniing
04:47 AM trentster: Anyone know of a good how-to for a hole center-probing routine in LinuxCNC?
04:50 AM archivist: trentster, like http://timeguy.com/cradek/01262579508
04:53 AM trentster: archivist: thanks, how do I go about using this? as a macro I presume called from a button?
04:54 AM jthornton: trentster: http://gnipsel.com/linuxcnc/files/ngcgui-probe.zip
04:54 AM jthornton: the same files converted to work with ngcgui
04:54 AM trentster: sweet! - thank jthornton
04:58 AM XXCoder: https://www.youtube.com/watch?v=jNnNOP6pLPE anti- package stealer
05:00 AM XXCoder: dang he has M<ANY videos of people stealing package off his ho,e
05:01 AM XXCoder: if it was that often I'd leave out box full of trash everyday
05:01 AM XXCoder: free trash service
05:02 AM XXCoder: lol first blank box "This was my first customer with TheBlankBox. If you look closely you can see the he dropped his cellphone while running away."
05:07 AM XXCoder: lol https://www.youtube.com/watch?v=TQmlUAIbcXA
05:24 AM XXCoder: jthornton: jeez that guy home have someone try to steal package each week
05:24 AM XXCoder: insane.
05:26 AM jthornton: around here you might get shot at
05:27 AM XXCoder: not here but also stealing packages is uncommon
05:27 AM XXCoder: kno wwhats funny?
05:27 AM XXCoder: tacoma is highest crime city in washington
05:27 AM XXCoder: not never had package stolen
05:27 AM XXCoder: *but
05:33 AM malcom2073: My guess is that guylives in a college town
05:33 AM XXCoder: maybe dunno
05:33 AM XXCoder: almost all of em is white people
05:33 AM malcom2073: The town I work in, there is all sorts of really stupid crime near the college
05:33 AM XXCoder: only last one is black guy
05:34 AM XXCoder: like I said, if it was my home I would let em take my trash home
05:46 AM XXCoder: heh just had an idea
05:46 AM XXCoder: make a box of lead
05:46 AM XXCoder: it'd be so heavy it would be barely liftable yet valueless
05:59 AM gloops: discovering a bit of accuracy in these sbr bearings heh, what runs fine with loosely clamped bolts doesnt when the bolts are tightened
06:23 AM XXCoder: http://zoomquilt.org/ fun
07:23 AM phipli: afternoon
07:25 AM JT-Shop: morning
07:25 AM phipli: How goes?
07:25 AM JT-Shop: just getting my day started
07:26 AM JT-Shop: waiting for the first egg lol
07:26 AM phipli: :) I'm off work
07:26 AM phipli: long overdue
07:29 AM phipli: had 6 egg (between two) scrambled egg for lunch
07:30 AM JT-Shop: how long are you off?
07:57 AM JT-Shop: can anyone load monoprice.com ?
07:57 AM JT-Shop: won't load for me
07:57 AM Tom_L: works fine
07:57 AM MarcelineVQ: loads here
07:58 AM Tom_L: blame interweb sensorship
07:59 AM JT-Shop: prob sat problems, it's misting
07:59 AM Tom_L: ahh
08:00 AM MarcelineVQ: often it's just a bad router somewhere along your path to the site that others here aren't likely to be on
08:01 AM Deejay: re
08:02 AM MarcelineVQ: you can use things like traceroute to find out where in the chain it fails, though that's not helpful information just fun to know
08:02 AM * jym can get to monoprice
08:03 AM archivist: even I can with my current dodgy internet
08:04 AM jym: Page 432 of 632 scanned
08:06 AM jym: JT-Shop: YOu've been on sat a couple years now, have you checked availability of service lately? I know many rural places have been updated with fiber.
08:07 AM phipli: JT-Shop, Two weeks this year, one week next
08:08 AM phipli: I've not managed to take my leave and am carrying over the maximum they'll let me
08:42 AM JT-Shop: jym: my neighbor checks often
08:43 AM phipli: is there mobile data in your area?
08:44 AM phipli: some places here (including my house until a year ago) have better mobile speeds than wired speeds
08:44 AM JT-Shop: yes verizon and att
08:44 AM phipli: but more expensive / worse?
08:45 AM JT-Shop: I only get a couple of bars on verizon and 0 bars with att
08:46 AM phipli: https://www.banggood.com/3G-4G-1900MHZ-Smart-LCD-Display-Cover-2200-Multiple-Verizon-Sprint-And-Att-Cellphone-Signal-Booster-p-1203989.html?
08:46 AM jym: JT-Shop: FWIW, there is hardware you can get and use with a high gain antenna to improve cell reception (aka data)
08:46 AM phipli: lol
08:47 AM jym: ...even from cellsites 70 miles away in some cases.
08:47 AM JT-Shop: yea I used to have a good one before verizon built a tower near by
08:48 AM phipli: https://www.banggood.com/search/booster-cell.html
08:48 AM JT-Shop: no chance for 70 miles when your in a valley
08:48 AM phipli: have to watch the frequencies - different parts of the world use different bands
08:48 AM phipli: got one for my parents a couple of years back
08:48 AM phipli: not sure how well it works
08:49 AM jym: I was tinking more like this, with a high gain antenna... https://www.banggood.com/CDMA-980MHz-Cell-Phone-Signal-Repeater-Booster-Amplifier-Outdoor-Yagi-Antenna-Kit-p-1108359.html
08:49 AM jym: Although not 900 MHz
08:50 AM JT-Shop: I only get 10GB between 2 phones...
08:51 AM jym: JT-Shop: There is unlimited data-online plans out there too
08:51 AM jym: data-only*
08:51 AM jym: month to month, no contract
08:52 AM jym: prepaid
08:56 AM jym: JT-Shop: Something like this and a good yagi antenna might do ya... https://www.newegg.com/Product/Product.aspx?Item=1EC-0005-00052
09:04 AM JT-Shop: interesting, I do have my tower still up on top of the hill...
09:05 AM jym: JT-Shop: Since yu can get prepaid data-only, grab a month's worth for ~$50. If it doens't work for you, just return the hardware and you'l only be out the $50
09:09 AM IchGucksLive: hi
09:15 AM elektron_: moin moin
09:35 AM phipli: jym : american_data_prices--
09:38 AM jym: phipli: ?
09:38 AM phipli: internet and mobile data tend to be quite expensive in the US from what I hear
09:38 AM phipli: $50 would get you a lot of mobile data here
09:39 AM jym: phipli: Yes, but when you have very little options, it's a potential solution.
09:39 AM phipli: yup
09:40 AM phipli: I've just started looking into LoRa out of curiosity
09:41 AM phipli: not a connection to the internet, but for low speed radio comms over reasonable distances, quite a cheap option
09:41 AM phipli: if you and your family lived in the same town you could send each other messages for free
09:41 AM jym: phipli: Not an option for JT-Shop due to the terrain.
09:42 AM phipli: https://www.banggood.com/Smart-Electronics-SX1278-LoRa-Ra-02-Spread-Spectrum-Wireless-Module-Ultra-Far-10KM-433M-p-1130727.html
09:42 AM phipli: jym, and the lack of internet on lora
09:42 AM jym: phipli: not really a drawback, that can be resolved
09:43 AM phipli: you could set it up as a serial console
09:43 AM phipli: connect into a linux machine
09:43 AM phipli: and use lyncs
09:43 AM phipli: *lynx
09:43 AM phipli: but yeah - trees and hills
09:46 AM archivist: I wonder how many of those can coexist in a small area
09:47 AM phipli: if you make friends with the other users, set them up as a mesh...
09:47 AM phipli: :) huge benefit
09:48 AM archivist: I was thinking a few communicating at Leawood sensors back to brain
09:50 AM phipli: "up to" 300kbps
09:50 AM phipli: should be enough
09:50 AM phipli: I have three on the way in the post
09:50 AM phipli: should arrive in the next couple of weeks
09:51 AM phipli: archivist, what were you thinking for power?
09:51 AM phipli: (supply)
09:51 AM archivist: battery
09:52 AM phipli: oh, I was thinking yesterday after I was talking to you
09:52 AM phipli: about the "volume"
09:52 AM phipli: have you considered using an accelerometer to identify "down" due to gravity
09:52 AM phipli: and using it as an angle measuring device
09:53 AM phipli: could use a magnet to attach it to the beam
09:53 AM archivist: yes I had
09:53 AM phipli: and then just measure the maximum change in angle
09:53 AM phipli: well, measure the angle, but take note of the maximum
09:53 AM phipli: do you have all the geometry of the engine?
09:53 AM phipli: to work out how degrees relate to piston location?
09:53 AM archivist: I have seen modules to add to faruinos
09:54 AM archivist: we have never done a complete drawing, one did model the watt motion
09:55 AM phipli: original drawings gone?
09:55 AM phipli: did it use standard parts?
09:55 AM archivist: hehe "standard parts"
09:55 AM phipli: :)
09:55 AM phipli: we'll you never know
09:55 AM phipli: enough of an issue with trains
09:56 AM archivist: 1848, that concept was in the future
09:56 AM phipli: "well, we fitted the modification to the first three locomotives... but there was a pipe and a box on the 4th, and the 5th had a toilet in the location"
09:56 AM phipli: with casting though, I thought they might be re-using patterns
09:56 AM phipli: because they're not the cheapest things to make
09:58 AM archivist: where the parts would be integrated on a later engine, the parts are separate
09:59 AM phipli: lego patterns :)
09:59 AM phipli: one of my workmates used to work in the pattern shop at RR
09:59 AM archivist: patterns were sometimes just a shape dragged in the sand, open mould
10:00 AM phipli: makes sense with something the size of the main beam
10:00 AM archivist: beam sides are open pattern
10:00 AM archivist: parts are wrought iron forged
10:01 AM phipli: how big did they go with forged parts on that engine?
10:03 AM archivist: nuts and bolts all vary, keep any nut with its matching bolt
10:03 AM archivist: rods in tension are wrought
10:03 AM phipli: makes sense, you just need a long workshop, not a big hammer
10:03 AM archivist: been to a working forge in Sheffield, entertaining to watch
10:03 AM phipli: the big hammers are amazing
10:03 AM phipli: I love how they do the same "keeping the rhythm" thing that blacksmiths do
10:03 AM phipli: even if it probably isn't for the same reason
10:04 AM phipli: ever seen a steam hammer working? (I haven't)
10:05 AM archivist: I have used a steam hammer with a blacksmith, you watch for a nod
10:06 AM phipli: https://www.youtube.com/watch?v=noDf6bmZw5w
10:06 AM andypugh: archivist: I worked with Forgemasters for a while.
10:06 AM archivist: I was here on the trip http://www.geograph.org.uk/photo/1689068
10:07 AM phipli: along with many axis cnc, forging videos are one of those things that make time vanish
10:07 AM andypugh: That was _so_ different to hand forging. With hand-forging you rush from the fire to the Anvil. With a 10 ton ingot you can pull it out of the fire and then come back to force it after lunch.
10:08 AM phipli: was just thinking that watching those fellows take quite a while moving the part under the hammer
10:08 AM phipli: "hurry up... no wait, thermal mass"
10:08 AM archivist: they were making rings at hillfoot while we were there
10:08 AM archivist: a few minutes a ring
10:10 AM phipli: do they use a die to get the hole?
10:11 AM phipli: multiple dies?
10:11 AM archivist: punch and die but they were loose items just placed on the anvil
10:12 AM andypugh: phipli: Have you seen this? https://www.youtube.com/watch?v=k_LA_R4ifYk&t=330s making anchors by piling up lots of little bits of very hot metal. It’s why those old anchors you see as display pieces erode in such a strange way.
10:12 AM archivist: man places a disk with hole on anvil then hot disk then a short cold bar on top whallop
10:13 AM archivist: fire welding, needs a good blacksmith
10:14 AM archivist: metal white and sparking, hammer together damned quick
10:19 AM phipli: took me a while to work out the orientation of the anchor
10:19 AM phipli: kind of like laser sintering...
10:19 AM phipli: but different
10:24 AM phipli: interesting - did I misunderstand, or did they call the chain a cable?
10:24 AM phipli: change of use there
10:27 AM andypugh: A cable is a chain used to moor a boat, rather than to suspend a weight.
10:28 AM phipli: interesting
10:28 AM andypugh: I imagine that the same chain can be a “warp” if used differenly.
10:28 AM phipli: is that still in usage?
10:28 AM phipli: (I don't do ships)
10:30 AM archivist: wp Anchor cable, as used by ships and boats, in British nautical usage it is a cable, not a chain
10:31 AM andypugh: Usage 4: http://www.dictionary.com/browse/cable
10:32 AM phipli: my brother used to live just off Ropery street in the east end of London
10:33 AM phipli: really long street down towards the docks
10:33 AM phipli: they used to make ropes in the street for the ships
10:33 AM andypugh: Not to be confused with a “rode” https://www.westmarine.com/WestAdvisor/Selecting-An-Anchor-Rode
10:34 AM archivist: I drove past ambergate ropeworks last night, site now used for starage and other industrial
10:35 AM archivist: they used to make wire rope there
10:36 AM phipli: there are some great youtube videos of the manufacture of steel cable
10:36 AM phipli: https://www.youtube.com/watch?v=eDVf71xd2cQ
10:37 AM phipli: the machine at 0:50]
11:49 AM IchGucksLive: so its a green xmas called
11:50 AM jym: ...St Patricks Day ?
11:58 AM Cromaglious_: anyone rnning a HF 33686 RF-31 round colum mill?
12:04 PM roycroft: round column mills are not fun to work with
12:04 PM roycroft: so the answer would be "as few people as possible" :)
12:04 PM Cromaglious_: it was free, so can't complain
12:04 PM roycroft: yes you can
12:04 PM roycroft: but you can still use it
12:05 PM Cromaglious_: true... no quill brake ugh...
12:08 PM Cromaglious_: going to add a lock pin off the quill, into the spindle sort of like the spring load one on an X2 mill
01:00 PM JT-Shop: phipli: I used to have a radio modem but the jackass next to the tower sued the ISP and made them take the tower down.
01:01 PM roycroft: why did two of my parcels go from california to portland and then to seattle, only to be stuck in seattle because i5 southbound is still closed?
01:01 PM roycroft: why didn't they just come back down from portland?
01:01 PM JT-Shop: things that make you just wonder
01:03 PM roycroft: the stuff arrived in portland yesterday, after the train crash
01:03 PM roycroft: so the logical thing to do was sent it in the wrong direction up to somewhere with no return path
01:08 PM IchGucksLive: hi ferdna
01:09 PM ferdna: hello
01:17 PM IchGucksLive: Gn8 from Germany
01:23 PM gregcnc: gah ocular migrain
01:53 PM gloops: the focke-wulf fw 190 was a very nice design
02:01 PM ziper: are scratches on the surface of plain oil bearings ok
02:03 PM gloops: shell bearings?
02:05 PM ziper: yeah
02:05 PM gloops: i suppose it depends on the depth, quantity of etc, the scratches will actually hold and distribute oil, not a bad thing
02:05 PM ziper: obviously out of round or something like that is unacceptable
02:06 PM gloops: clean meticulously without breathing, coat lightly in oil and replace
02:07 PM ziper: my garage is way too dirty for that
02:08 PM ziper: breathing is the least of my concerns
02:08 PM gloops: im sure you can put some newspaper on something and clean the shells with a cloth
02:09 PM ziper: yeah, but I accidentally scratched the new bearings, I don't think its enough to harm them
02:09 PM gloops: the breathing is about the intense pressure one should be feeling when dealing with shells
02:09 PM ziper: since i've had to take them out and replace them like five times
02:09 PM gloops: why is that? why 5 times?
02:09 PM ziper: i always mess something up
02:09 PM gloops: have you trimmed them to fit?
02:10 PM ziper: now i've got the connecting rod wrong way round
02:11 PM ziper: I didnt trim anything, just plastigage them
02:11 PM gloops: shell bearings are often supplied slightly oversize, you may need to file the ends to get a good fit on the shaft
02:12 PM ziper: but i'm also afraid my one replaced liner has to be finished, the piston was such a tight fit
02:12 PM ziper: the aluminum piston might expand at temperature in the steel liner
02:12 PM gloops: is it tight without the rings?
02:12 PM ziper: never heard of that, and at least its not speced in the manual
02:13 PM ziper: only on the skirt
02:13 PM gloops: the new liner, is it smooth or does it have small machining lines ?
02:14 PM gloops: try the shells on the shaft - do they fit properly or are they too big - i.e any movement if you hold them tight together
02:15 PM gloops: or try them in the conrod, can you fit the clamping side with a tight fit over the shells?
02:15 PM ziper: its got the crosshatching, and since the plastigage checked out <.003 I think the shells must be ready to install
02:17 PM gloops: well you seem to have checked it so should be ok
02:17 PM gloops: is the piston new?
02:18 PM ziper: nope
02:18 PM ziper: looks like crap
02:18 PM ziper: i need a bore gauge
02:18 PM gloops: could be ovalled or something, it will run in
02:18 PM ziper: and micrometers
02:21 PM gloops: calipers
02:24 PM gloops: what actually happened to this engine ziper - i mean why is it in bits?
02:24 PM ziper: dropped valve
02:25 PM ziper: piston in tiny tiny pieces, gouged liner
02:25 PM ziper: head mostly ok
02:25 PM gloops: dropped vale - so no piston damage, conrod not bent?
02:26 PM gloops: i see, so while youre at it - new shells and a rebore
02:26 PM ziper: oh no the piston was annihilated and rod bent
02:26 PM ziper: but i have another engine with a dropped valve to steal parts from ))))))))))))))))))
02:27 PM gloops: 2 engines with dropped valves, ever considered a different manufacturer? lol
02:27 PM SpeedEvil: you can clean up the scratch so that it's got no protruding metal
02:27 PM ziper: gloops, i'll swap it if it fails again
02:28 PM ziper: maybe a vw engine
02:28 PM gloops: i did exactly this, or something very similar with one of my first cars
02:29 PM gloops: i had a vauxhall viva van, dropped a valve, bought an MOT failure viva car and swapped the engine - THAT engine dropped a valve, decided to strip the engine, got timing chain a tooth out, strip again, finally ran - for a while
02:30 PM ziper: you drove it with the timing off? after fixing the valve?
02:31 PM gloops: no first time i rebuilt it i got the timing chain out, spluttered and chugged made some impressive bangs
02:31 PM gloops: got the engine out again
02:32 PM ziper: there was a guy near me who had the same motor for sale for 3k usd
02:32 PM ziper: i don't know if he didnt know it was a literal tractor motor was just on crack
02:33 PM gloops: if its an expensive motor its got to be worth a try at repairing
02:34 PM ziper: its a little rare but not really expensive
02:36 PM gloops: youve got a chance with an 8 valve, if the valves are vertical, piston hits them and sends them straight back up, bent rocker arm or cam follower - lot of engines now have soft cam followers
02:37 PM gloops: 16 valve the valves come in at an angle, smash
03:33 PM gloops: Leicestershire county council has warned people should eat no more than 6 sprouts with their Xmas lunch
03:33 PM gregcnc: will any router do: wifi -> router -> wired connection? this is to transfer files to my machine with minimum effort
03:39 PM Rab: gregcnc, that's typical behavior for cheap home routers. Everything shows up on the same subnet. Isolation between wireless and wired networks is a more professional feature.
03:40 PM gregcnc: i guess a wireless bridge is what i'm after
03:40 PM Rab: Oh, you want to make a wireless connection to an existing wired network?
03:40 PM gregcnc: i saw somewhere a guy using a small travel router MWR102 for this
03:41 PM gregcnc: correct
03:41 PM enleth: most APs have a bridge mode switch somewhere in the admin panel
03:42 PM Rab: Yeah, bridge is the operative term. A lot of cheap routers can do that, maybe not all.
03:42 PM gregcnc: MWR102 can still be had on thEbay so i'll probably try one of those
03:44 PM enleth: from my latest experience, I'd recommend getting a MikroTik hAP AC (NOT hAP AC Lite, which lacks a gigabit switch), it's priced similar or only slightly higher than regular high-quality SOHO routers but you get their RouterOS included in the price
03:45 PM enleth: or if you need something small that's just a wireless bridge and not a switch/router - the mAP
03:45 PM enleth: half the price, still has RouterOS
03:46 PM enleth: I got fed up with bullshit admin panels in typical customer-grade routers and switched to MikroTik, so far I'm very happy with this decision and I don't think it's confirmation bias
03:47 PM enleth: the only real problem with RouterOS is that if you *don't* know your way around networking, you get all the tools necessary to shoot yourself in the foot with a stupid config
03:47 PM enleth: but that's what the factory reset button is for if it comes to the worst
03:47 PM JT-Shop: https://www.amazon.com/Mikrotik-RB962UIGS-5HACT2HNT-RouterBoard-hAP-AC/dp/B01BMMK4HI
03:47 PM JT-Shop: that one?
03:47 PM enleth: that one.
03:48 PM JT-Shop: I like the POE on the last port
03:48 PM Rab: I have a MikroTik router at home which works very well, but I wish I had something with pfsense or other OSS. RouterOS has a pretty good learning curve, not worth it IMO unless you expect to admin other MikroTik products.
03:48 PM Rab: However I can't fault the power and flexibility of RouterOS, or the performance of the hardware.
03:49 PM enleth: JT-Shop: works very nicely with a PoE-powered mAP if you need a second AP just to cover the far side of the house
03:50 PM Rab: CRS109 is the one I have.
03:51 PM enleth: Rab: actually I've never tried that, but I'd expect MikroTik hardware to be relatively easy to re-flash with whatever
03:53 PM Rab: enleth, I don't know if that's the case. But I do believe they have some kind of weird virtualization support where you can run third-party OSS firewalls as a RouterOS subsystem.
03:53 PM JT-Shop: I think you may be more of an enthusiastic beginner/intermediate level which is fine, but don't come play in the deep end and then get mad when you're out of your depth.
03:53 PM JT-Shop: I like that comment on a 1 star review
03:54 PM * JT-Shop notes it's time to share a beer with the chickens
03:54 PM enleth: well, that's what happens when you don't get to that part of the manual mentioning the factory reset button and the config export/import features
03:55 PM Rab: Looks like that's only for certain products: https://wiki.mikrotik.com/wiki/Manual:Virtualization
03:55 PM enleth: I consider myself pretty skilled in networking, but I still do a full working config dump whenever I begin messing with the router's config
03:56 PM enleth: just to be able to say "screw it, factory reset" when I do something funny instead of trying to revert the changes manually
03:56 PM Rab: You can also virtualize RouterOS on commodity x86 hardware, interesting.
03:56 PM enleth: yep, it's handy for when you need something more powerful than any of their boards
03:56 PM enleth: but you need a separately bought license for this
03:57 PM enleth: and they do have some pretty weird licensing terms
03:57 PM gregcnc: it seems even mAP Lite would do the job
03:57 PM enleth: gregcnc: it's only 100mbit on the ethernet side
03:58 PM enleth: that's way slower than 802.11ac
03:58 PM enleth: it's perfect to set up a wifi repeater/birdge for cell phones if you have bad wifi reception in the toilet, for example
03:58 PM enleth: exactly my use case
03:58 PM gregcnc: my files are oh 1kB max ~50kB
03:59 PM enleth: well, in this case it will be OK, just mind the limitations in case you ever need it for something more
04:01 PM enleth: all you'll need to do to set it up is: 1. power it up 2. connect to its wifi network 3. change the network name, set password 4. remove the INPUT -j DROP firewall rule on the ethernet interface on the Firewall tab (so that you can connect to the admin panel from the wired side) 5. enable bridge mode (main config screen)
04:01 PM enleth: you might also want to change its internal IP address to match your network for easier admin panel access
04:02 PM gregcnc: sounds good
04:06 PM gregcnc: OK for tocday 3.5" floppy will have to do
04:08 PM Deejay: gn8
04:51 PM gloops: a welded gantry is a pain the neck
05:14 PM gloops: archivist - near you, watchmakers and engineers tackle https://www.ebay.co.uk/sch/2013mr_sim/m.html?item=152826907574&hash=item2395318bb6%3Ag%3AK58AAOSwuhFaHKYP&rt=nc&_trksid=p2047675.l2562
05:22 PM skunkworks: not if you have a large mill to true it up...
05:23 PM gloops: not practical, you can do some milling yes but not all the issues can be milled away
05:27 PM gloops: and there is a lot of faffing about bearing blocks on, bearing blocks off, on off on
05:34 PM gloops: have spent 2 hours on an ally pad for a block (shim) ive had it so that you can just touch the gantry and it rolls all the way to the other side, docks right up to the square guide perfect, tighten onto the shim - still free running but not as free, filing and whittling for ages
05:36 PM seb_kuzm1nsky is now known as seb_kuzminsky
06:24 PM SpeedEvil: :)
06:42 PM andypugh: A hybrid stepper has 2 x 50 tooth rotors 1 tooth offset. But how many teeth are on the stator?
06:43 PM Tom_L: https://media.digikey.com/pdf/Application%20Notes/NMB%20Application%20Notes/Hybrid_Stepper_Motor_101.pdf
06:44 PM Tom_L: i'm not sure that says either but it may
06:45 PM Tom_L: 2 phase construction
06:47 PM Tom_L: The use of equal tooth-pitch on stator and rotor structures provide nearly 10% more torque than the case with unequal tooth-pitch, but with corresponding increase in detent torque.
06:47 PM Tom_L: leads me to believe they are the same
06:47 PM Tom_L: http://ieeexplore.ieee.org/document/1330026/
06:47 PM andypugh: I think there are 2 more
06:49 PM andypugh: (Actually, they are probably just irregular)
07:04 PM ziper: what kind of fitting is this https://i.ebayimg.com/images/g/aJQAAOSw401Zy~dd/s-l1600.jpg
07:04 PM ziper: its obviously a flare but why is it going inwards
07:05 PM ziper: oh I suppose its like an AN fitting, but presumably metric
07:08 PM Tom_L: http://wickes.scene7.com/is/image/travisperkins/largeNormal/Radiator-Valves-Wickes-Radiator-Valve-Extension-Piece-40mm~C7322_424914_00?defaultImage=travisperkins/missing-product
07:08 PM Tom_L: i was thinking something like that
07:17 PM ziper: I might just put some teflon on the thread and a barb adapter
07:45 PM roycroft: are there any autocad wizards here?
07:45 PM roycroft: i'm starting to use sheet sets (should have done so years ago)
07:46 PM roycroft: and i want to number my sheets "x of y"
07:46 PM roycroft: i can easily have the sheet set manager insert the proper value of x on each sheet
07:46 PM roycroft: but i can't figure out how to have it insert the proper y value
07:47 PM roycroft: so far my only option has been to build the entire sheet set, count the sheets, and then modify y in the sheet set template
07:48 PM roycroft: and while that's not particularly onerous, it's inelegant to say the least
09:16 PM BeachBumPete: Hey guys any of you been using F360 a lot? I got a question that the youtubers vids I watched did not seem to cover
09:18 PM BeachBumPete: is it possible to dimension a 3d body in 3d space? It seems like the dimension tool is only usable in sketch mode?
09:44 PM Tom_L: not sure what you mean
09:45 PM BeachBumPete: I mean that I want to be able to add a dimension to the extruded 3d part in the viewport and then take a screenshot of it.
09:46 PM Tom_L: oh
09:46 PM Tom_L: you should be able to
09:46 PM Tom_L: i've done it in other software
09:46 PM BeachBumPete: I would think so but I cannot figure out how LOL
09:46 PM Tom_L: it's not a feature i would use alot so i can't tell you how without reviewing the book
09:47 PM Tom_L: in catia the dimensions become part of the tree
09:47 PM Tom_L: on the side list
09:47 PM BeachBumPete: its okay I am about to shut it down and go to bed LOL
09:48 PM Tom_L: https://forums.autodesk.com/t5/fusion-360-design-validate/dimensions-in-3d-model-fusion-360/td-p/6961525
09:48 PM Tom_L: your short answer is NO!
09:48 PM Tom_L: fail
09:49 PM BeachBumPete: damn that bites
09:49 PM Tom_L: that what you're after?
09:49 PM BeachBumPete: I DID figure out how to insert the part into a drawing and dimension it there tho
09:50 PM Tom_L: that was an exercise we had to do in catia
09:50 PM Tom_L: yeah, in catia you have the model open and then start drafting
09:50 PM Tom_L: it will do the standard 3 views for you and if you want more you can change them
09:50 PM BeachBumPete: Ok
09:50 PM BeachBumPete: thanks man
09:51 PM Tom_L: one sec..
09:51 PM BeachBumPete: I gotta get to bed have a good night
09:51 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/BaseBolts1.jpg
09:51 PM Tom_L: slow but sure
09:51 PM BeachBumPete: looking good man
09:52 PM Tom_L: ttyl
09:52 PM roycroft: slow but steady gets you across the finish line
09:52 PM Tom_L: long day here too
09:52 PM BeachBumPete: is there a reason you did not mount the column directly onto the base?
09:52 PM Tom_L: wanted more height and the Y motor sits under it
09:52 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Drillpress.jpg
09:52 PM Tom_L: ya do what ya gotta do
09:53 PM BeachBumPete: aah gotcha
09:53 PM BeachBumPete: Ok night man