#linuxcnc Logs

Mar 11 2021

#linuxcnc Calendar

12:59 AM Deejay: moin
02:39 AM Loetmichel: **heh**... its surprising how much difference simple 2.5 times magnifying glasses make while soldering... without i am doing more of a "feeling" job and the solder joints look ugly although they work fine. When clearly seeing what i am doing it not only looks way better, it also goes a lot faster ?!?
04:23 AM Tom_L: morning
04:25 AM XXCoder: yo
05:04 AM JT-Cave: morning
07:23 AM commavir_ is now known as commavir
08:35 AM mrec: is there a way to make a handwheel do an adaptive path?
08:36 AM mrec: decrease the chip load by running a circular movement
08:40 AM gregcnc: by hand?
08:40 AM mrec: X/Y I only care about mm, but the operation behind it should be a circular movement
08:41 AM mrec: I have a block here where I need to cut a slot into it
08:41 AM mrec: I could generate some NC code of course however it would be quicker just to do that manually
08:42 AM mrec: the problem is the chip load is too high if I go too deep...
08:43 AM gregcnc: why is everyone hung up on trochoidal paths?
08:43 AM JT-Cave: lol
08:44 AM mrec: that's it yes :-)
08:44 AM sensille: probably takes a lot of practice by hand, especially when there is significant backlash present :)
08:44 AM gregcnc: reminds me of "don't slot the stupid way" was the dumbest video I ever watched the first 30 seconds of
08:45 AM mrec: it has nothing to do with the video my weak toy mill needs that
08:45 AM gregcnc: 40 passes at 0.2mm will also get it done.
08:46 AM mrec: but puts all the stress on the tip of the endmill
08:46 AM sensille: gregcnc: why is it dumb?
08:46 AM mrec: plus chip evacuation is much easier with trochoidal paths
08:46 AM gregcnc: OK
08:47 AM gregcnc: it has applications, you just need to know when it mattres
08:47 AM sensille: i only started to look into adaptive paths recently, so i would honestly be interested in why you think it's dumb
08:47 AM mrec: adaptive paths can get more out of your machine they aren't dumb at all
08:48 AM sensille: and most endmills i lost was to poor chip evacuation while slotting
08:48 AM gregcnc: "getting more" is the hard part
08:49 AM gregcnc: if chip evacuation is the problem, fix it
08:50 AM mrec: buy a better mill sure :-)
08:50 AM sensille: it would probably include building an enclosure for the machine
08:52 AM sensille: alternative would be to make wider slots with low depth of cut
08:53 AM sensille: but how to get the chips reliably out of an 8mm slot cut with a 3mm endmill?
08:53 AM sensille: (8mm deep)
08:54 AM mrec: a lot air pressure
08:55 AM mrec: adaptive is easier
08:55 AM mrec: or strong vacuum
08:55 AM sensille: well targeted air pressure
08:56 AM sensille: adaptive or wider cuts in several passes
08:56 AM mrec: I'm cutting 15mm aluminium with a 5mm endmill 2 endmills broke due to my fault today
08:56 AM mrec: considering each endmil 1.50$ whatever...
08:57 AM gregcnc: do 1.50$ endmills work in general?
08:58 AM mrec: I have no problem with them
08:58 AM mrec: first my feed rate was too quick, second I continued at the wrong place and directly crashed the second endmill
08:59 AM sensille: i still pay ~$10 each for 3mm, should find a cheaper source
08:59 AM mrec: I have some 20$ ones here too they're better certainly
09:00 AM mrec: the blade is sharper
09:00 AM mrec: and the quality of the material should be better too
09:01 AM mrec: but I'm only cutting aluminium with the cheap ones, I cut stainless steel with the 20$ one
09:10 AM gregcnc: chip breaker endmills can be very useful, but less common under 1/4" 6mm
09:12 AM mrec: did you ever try trochoidal slotting?
09:13 AM gregcnc: of course, I use it when it makes sense and don't when it doesn't
09:14 AM mrec: I would use it nearly everywhere with my weak mill
09:16 AM sensille: mrec: what make is your mill?
09:17 AM gregcnc: for aluminum frame routers with 24kRPM spindle it makes sense
09:17 AM sensille: that's mine :)
09:18 AM gloops: $10 for a 3mm endmill...pff
09:19 AM sensille: overpriced?
09:20 AM mrec: https://www.weissmachinery.com/bench-type-milling-machiune/57296012.html
09:20 AM gloops: well i dont know, suppose it depends on the use and the cost/value ration
09:20 AM gloops: https://www.ebay.co.uk/itm/10-1-8-Inch-3-175-25mm-Shank-1-Flute-Carbide-Spiral-End-Mill-CNC-Router-Bit-UK/402673400952?
09:21 AM mrec: I have those ones... they're not very sharp
09:21 AM gloops: i use those, way i see it you can go through a lot of those before you reach the price of an expensive one
09:21 AM gloops: mrec theyre like razors!
09:21 AM mrec: a little bit tricky to get a good finish with acrylic
09:22 AM gloops: and how long is an expensive one sharper?
09:22 AM gloops: ahh well, specific jobs may vary
09:22 AM sensille: i have those https://www.sorotec.de/shop/Zerspanungswerkzeuge/sorotec-werkzeuge/2-schneider/Schaftfraeser-ALU/
09:22 AM gregcnc: https://www.ebay.com/itm/381173864944
09:23 AM gloops: if youre doing 5k jobs then you have the luxury of not caring about the cost of the cutter of cours
09:39 AM roycroft: that depends more on the profit margin than the dollar amount
09:40 AM gloops: well yeah, youll know if youre making enough i suppose, obviously im not lol
09:40 AM gregcnc: bidding too low?
09:41 AM gloops: not done anything for 7 months now anyway, been off with bad back, ready to start again now
10:01 AM roycroft: hmm
10:01 AM roycroft: there's an 8" jointer with a spiral cutterhead on cl for $50 more than what i got for my edge sander
10:01 AM roycroft: i'm a bit dubious, though
10:02 AM roycroft: the seller claims it is in "like new" condition, but the pictures show it as used and the bed covered with surface rust
10:02 AM roycroft: which in and of itself does not bother me, but the misrepresentation of the condition does
10:03 AM roycroft: it makes me wonder what else is not being said about it
10:03 AM roycroft: and it's in portland, so i'd have to drive 2 hours to check it out
10:03 AM roycroft: but it's $1250 less than buying the new one i'm looking at
11:00 AM skunkworks: roughing the back side of the 4th axis face plate...
11:01 AM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20210310_184933.jpg
11:02 AM skunkworks: it is about 4.5" diameter.
11:25 AM bjorkintosh: any opinions on this? https://www.foxalien.com/
11:26 AM bjorkintosh: It's less than $400.00 but I'm afraid it may be no better than an exacto and a straight edge.
11:33 AM gloops: not sure which one, router or laser?
11:35 AM bjorkintosh: sorry, router.
11:36 AM roycroft: it depends on what you intend to do with it
11:37 AM roycroft: if you'll only be doing 2d routing in wood, it may work reasonably
11:39 AM gloops: ive not used one similar but a few points spring to mind - spindle is slow for wood, looks like 400w, belt drive, and generally flimsy looking
11:39 AM bjorkintosh: bah. it'll struggle with anything other than ABS probably.
11:39 AM bjorkintosh: maybe I should just save my money.
11:41 AM gloops: someone might might know different to me but i think id wait a bit longer
11:42 AM roycroft: not knowing what the application is it's difficult to make a recommendation
11:43 AM gloops: someone had a chinese 6040 in here that was made passable i think, Loetmichel uses them to work aluminium
11:43 AM gloops: https://www.ebay.co.uk/itm/USB-3-Axis-6040-CNC-Router-Engraver-Wood-Metal-Milling-Machine-1500W-VFD-SALE/353413431609?
11:43 AM sensille: me too
11:44 AM gloops: oh yeah it was you sensille
11:44 AM sensille: Loetmichel also runs a few of them, he's the one who recommended it to me
11:44 AM gloops: what do you think to this https://www.foxalien.com/collections/cnc-router/products/cnc-router-machine-4040-xe
11:45 AM Loetmichel: i made the distinct recommondation that its "the most bang for the buck" though
11:45 AM sensille: and that it _can_ do aluminum
11:45 AM Loetmichel: meaning that while that machine is quite a bit more capable than an MPCNC for example its not like it is able to do a 80mm face mill in steel if you know what i mean
11:47 AM bjorkintosh: roycroft, none really. just a toy to play with. maybe I should get a 3D printer instead.
11:48 AM sensille: both nice toys :)
11:48 AM Loetmichel: gloops: a few problems with that: not enough rigidtiy in either the gantry nor the y axis. Not enough Z travel to be useful for anything but sheet material, a "spindle motor" that is a joke when it comes to side forces.
11:48 AM Loetmichel: Should i continue?
11:48 AM sensille: the bed?
11:48 AM gloops: well its not for me lol, does look a bit tinny built though
11:49 AM Loetmichel: ah, bjorkintosh asked aboiut it initially
11:49 AM Loetmichel: sorry gloops
11:49 AM bjorkintosh: so Loetmichel you don't recommend the 6040 then?
11:49 AM Loetmichel: depends
11:50 AM Loetmichel: as i said: 6040 is at a great price point for doing wood, plastics and alu/brass work. It CAN do steel with the right mill bit, but it will take ages.
11:51 AM Loetmichel: depending on what you want to do with it it may work great or it may be a lost invest.
11:51 AM bjorkintosh: ah I see.
11:51 AM sensille: bjorkintosh: 2 example pieces done with my 6040: https://i.imgur.com/Ae3BTsC.jpg https://i.imgur.com/OFOXoMU.jpg
11:51 AM Loetmichel: but that foxalien link is just awful
11:52 AM sensille: bjorkintosh: it was the right starting point for me
11:52 AM bjorkintosh: Loetmichel, thank you. that's what I wanted to determine.
11:53 AM bjorkintosh: sensille, wow. not bad. aluminium?
11:53 AM sensille: yes
11:53 AM roycroft: if i'm honest, "i just want something to play with" isn't a very helpful answer
11:53 AM sensille: but now i want a semi-proper vertical mill for steel :)
11:53 AM roycroft: what is it in particular you want to do?
11:53 AM Loetmichel: bjorkintosh: how about that? -> http://www.cyrom.org/palbum/main.php?g2_itemId=16414&g2_imageViewsIndex=1
11:53 AM roycroft: do you want to learn about gcode and cnc in general?
11:53 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=16411&g2_imageViewsIndex=1
11:53 AM bjorkintosh: roycroft, nothing yet, is the thing. I already spend my working hours on a rather large CNC machine.
11:54 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=16182&g2_imageViewsIndex=1
11:54 AM gloops: dont bid on the link i posted btw - Postage:
11:54 AM gloops: £3,000.00 Standard Delivery from outside UK |
11:54 AM gloops: haha
11:54 AM roycroft: i'm just trying to get a sense of expectations
11:54 AM gloops: coming by taxi from hong kong
11:55 AM Loetmichel: Taxi with floating hull and propellers?
11:55 AM sensille: roycroft: the main question is: are you more interested in wood or in metal?
11:55 AM bjorkintosh: Loetmichel, what did you make that on??
11:55 AM Loetmichel: a 6040
11:55 AM bjorkintosh: oh nice!
11:55 AM roycroft: you know i was looking for an m8 hex key on ebay the other day, as the sander i just sold uses one, and i thought it would be nice to toss one in with it
11:55 AM Loetmichel: thats why i had to "puzzle" the bottom and top together
11:55 AM Loetmichel: machine to small
11:55 AM roycroft: i could not source one locally without buying a whole set
11:56 AM bjorkintosh: roycroft, I already run mills and lathes at work (both g-code and mazatrol).
11:56 AM roycroft: and i never dedicated one to it so i wan't going to give away the one i use with it
11:56 AM roycroft: i was finding them on ebay in the $3-$4 range
11:56 AM roycroft: which was nice
11:56 AM roycroft: except they all had $26 shipping charges
11:56 AM roycroft: so i told the guy who bought it that he needs an m8 hex key for it
11:57 AM roycroft: i don't get why ebay sellers even do that any more
11:57 AM Loetmichel: bjorkintosh: in my experience about F1200, S24000 and DOC 0.15mm with a 2mm two flute Tungsten carbide bit is about the max in AlMg3
11:57 AM roycroft: ebay started charging commission shipping charges years and years ago
11:57 AM Loetmichel: any more and you either break the bit or produce chatter
11:57 AM roycroft: they are not dumb
11:59 AM bjorkintosh: the 6040 might just fit the bill for what I want to play with.
12:00 PM bjorkintosh: Loetmichel, what's the biggest challenge you face with the 6040? the size?
12:25 PM htasta: the shitty mechanics, lol :D
12:31 PM Loetmichel: bjorkintosh: both size and the unsupported rails in the gantry
12:32 PM Loetmichel: i made bigger gantry machine back in my last job but they were a LOT more expensive: http://www.cyrom.org/palbum/main.php?g2_itemId=4935&g2_imageViewsIndex=1
12:32 PM Loetmichel: could travel 1500 by 1020 by 160mm
12:32 PM Loetmichel: but usung THK rails and 4 instead of 3 Ballscrews meant that it was a wee bit expensive
12:32 PM Loetmichel: using
12:33 PM Loetmichel: $4k in plywood and rails/ballscrews alone
12:34 PM Loetmichel: plus all the electronics, spindle motor and stuff
12:34 PM Loetmichel: not to mention around 700h to make the thing
12:34 PM Loetmichel: thats what i meant about "price point"
12:35 PM Loetmichel: you will probably not get a cheaper machine of that size with its (a bit limited but still good) capabilites than a CNC 6040
12:36 PM htasta: hahaha Loetmichel this was the random image I got on the left: http://www.cyrom.org/palbum/main.php?g2_view=core.DownloadItem&g2_itemId=11137&g2_serialNumber=2
12:36 PM htasta: couldnt be more you :D
12:36 PM Loetmichel: htasta: slight mishap with the bandsaw. nothing to see here ;)
12:37 PM htasta: wait did you mount the vfd on the Z axis there?
12:38 PM Loetmichel: yep
12:38 PM Loetmichel: had problems with the EMI filters throwing the RCD
12:39 PM Loetmichel: so i switched them off, but then i had to have the motor cables as short as possible
12:39 PM htasta: lol
12:39 PM Loetmichel: to not throw the stepper drivers off
12:40 PM htasta: I had a similar issue but using an extension cord for the VFD fixed the problem, hahhahaha
12:40 PM Loetmichel: "its not dumb if it works" ;)
12:40 PM htasta: :D
12:59 PM bjorkintosh: <Loetmichel> $4k in plywood and rails/ballscrews alone. Wow!
01:43 PM roycroft: it seems that most folks make their cnc conversion parts, i.e. motor mounts, ball nut mounting plates, etc. out of aluminium instead of steel
01:43 PM roycroft: is there a good reason for doing that?
01:44 PM Tom_L: easier to machine
01:45 PM roycroft: i can see that
01:45 PM roycroft: although i find steel easier to work with
01:46 PM Tom_L: how so
01:46 PM roycroft: in large part because i don't have to worry about scratching it or dinging it if i look at it funny
01:46 PM roycroft: as well, i've machined a lot more steel than aluminium, so i have a better "feel" for working with it
01:46 PM roycroft: when i finish the cnc conversion i'll be doing a lot of work with aluminium though
01:47 PM roycroft: so maybe my story will change
01:47 PM Eric__: it has been so long since I logged into automation direct that I have to call them
01:48 PM Eric__: to get my account to work
01:48 PM Tom_L: i've got job files for aluminum, steel and brass for my cad cam so it doesn't matter much
01:48 PM roycroft: oh that reminds me
01:48 PM roycroft: i got a call from goldmann-sachs
01:48 PM roycroft: they were amused that i sent them a physical letter in the mail
01:49 PM roycroft: but the informed me that i could not close my account with them until i provide them with an external funding source so they can transfer my money out of the account
01:49 PM roycroft: i had already cleaned it out
01:49 PM roycroft: the balance was zero
01:49 PM roycroft: but it actually wasn't
01:50 PM roycroft: i had cleaned out all the money right before the end of the month, and i got 33 cents interest on the 1st
01:50 PM roycroft: i transferred that 33 cents out on the 2nd, but it took 5 days to transfer
01:50 PM roycroft: in the meantime i had earned a tiny fraction of a cent of interest on the 33 cents
01:50 PM roycroft: and they wanted to round that up to 1 cent and then transfer it to my bank account
01:50 PM roycroft: i told them to keep it
01:51 PM roycroft: they told me the can't, so they're sending me a check for $0.01
01:51 PM Eric__: anyone have a suggestion for a leadshine dealer that wants to take my money?
01:55 PM Tom_L: i'm no leadshine dealer but i'll gladly take your money
02:09 PM CaptHindsight: Eric__: in the USA? http://www.automationtechnologiesinc.com/ has private label versions
02:16 PM Eric__: Tom_L checks in the mail
02:21 PM Eric__: CaptHindsight thanks, they don't seem to use the same cable as leadshine, unfortunately
02:34 PM Eric__: I got all the way through automation directs ordering system and it won't let me press the "submit order" button
02:35 PM Eric__: I'm going to go tweet about it :)
02:36 PM ziper: i'm beginning to worry about my chuck and or spindle
02:36 PM ziper: I chucked an endmill and there is a visible wobble
02:37 PM Eric__: wobble or non-concentricity ?
02:38 PM Eric__: R8 collet?
02:38 PM ziper: I only noticed it out at the end, not nearer the chuck
02:38 PM ziper: no, just a regular 3 jaw
02:39 PM Eric__: on a lathe?
02:39 PM ziper: yes
02:40 PM Eric__: is the nose of the lathe threaded?
02:40 PM ziper: yes
02:40 PM Eric__: there is no help for you, sorry
02:40 PM ziper: i'm used to it
02:41 PM Eric__: I'm sure there are ways to true it up, that's probably where the problem is
02:42 PM Eric__: is this an old lathe or fairly new one?
02:42 PM ziper: ancient
02:42 PM Eric__: you should be able to mic the mounting face on the nose and see how that's going. Also the bore
02:43 PM Eric__: or you might just need to true the jaws of the chuck. But I think I would do that last
02:43 PM ziper: the inside of the jaws look terrible
03:16 PM Eric__: I watched a video about truing jaws and it was 14 minutes of talking for about 1 minute of information
03:17 PM ziper: yeah
03:17 PM ziper: i just did that too
03:17 PM Eric__: same video probably
03:17 PM Eric__: did he make a ring?
03:18 PM Eric__: my chuck jaws don't have a way to easily fasten a ring
03:18 PM ziper: mine does, luckily
03:18 PM ziper: they aren't reversible
03:24 PM Eric__: mine aren't either, but they don't bolt to anything
03:26 PM ziper: mine seem set up differently from everyone else https://i.imgur.com/TxoGNvX.jpg
03:26 PM gloops: take a thrape off the jaws with pencil grinder clipped to toolpost
03:28 PM gloops: https://www.youtube.com/watch?v=uGgm1N5RSSA
03:28 PM gregcnc: those are outside jaws
03:29 PM ziper: they seem to be the only ones i have
03:29 PM gregcnc: before you true it, take it apart and clean it
03:29 PM ziper: did that
03:29 PM gregcnc: after the pic I hope
03:30 PM Eric__: don't judge
03:30 PM gloops: they cant go back in the wrong sequence...
03:30 PM gregcnc: yes they can
03:30 PM Eric__: they can, but the error will be quite obvious
03:30 PM gloops: ahh, yes but you would know
03:30 PM gloops: on the chucks ive seen anyway
03:30 PM Eric__: the concern over backlash in the scroll is overblown
03:31 PM Eric__: although not taking up the backlash is very sloppy way of doing things
03:32 PM gregcnc: backlash? oh truing loaded opposite of normal?
03:32 PM Eric__: clean the scroll, run the lathe at max warp and they will be at the outside of their travel
03:32 PM Eric__: I hate to link to the video where the guy takes up the backlash with a ring, it's so long
03:33 PM Eric__: https://youtu.be/nALN0qGZbgY
03:34 PM Eric__: truing with the jaws loaded in the same direction they are usually loaded
03:34 PM ziper: yep thats the one i watched lol
03:34 PM ziper: my left ear really liked it
03:35 PM gregcnc: for that chuck I'd put a ring in one of the steps to get the inner most jaw face, then put in a slug and do the rest
03:35 PM Eric__: I was just going to say I could put the ring on my inside jaws
03:35 PM Eric__: no, that doesn't work
03:42 PM ziper: any reason i should grind the jaws instead of turn them?
03:48 PM gloops: well, resistance i guess
03:48 PM XXCoder: https://youtu.be/Z3HG-eeQfP4 anyone wanna try? heh
03:50 PM ziper: that was only like 12 feet long!
03:50 PM XXCoder: 20 dollars per second
03:50 PM XXCoder: 1.75 second
03:53 PM miss0r: This is why I hate drilling with regular drills in a cnc. You can't *feel* it :)
03:58 PM miss0r: https://imgur.com/a/EGYNrUR <- this is what it looks like, anyway.
03:58 PM JT-Shop: ouch
03:58 PM miss0r: One of the oil ports drilled into the side has moved 1.5ish mm
03:59 PM miss0r: Thats alot of work down the drain :-/
04:00 PM miss0r: and yes. It almost makes me want to cry :D
04:00 PM Eric__: ziper, jaws should be hardened and it's an interrupted cut
04:00 PM Eric__: much better to grind
04:04 PM miss0r: gregcnc: feel my pain! :D My workpiece moved during the last operation! https://imgur.com/a/EGYNrUR one of the oil ports on the side moved 1.5mm
04:07 PM ziper: alright i'll try the dremel
04:07 PM ziper: thanks
04:07 PM XXCoder: miss0r: ow :( is it recoverable?
04:07 PM miss0r: nope
04:07 PM XXCoder: ow seems not
04:08 PM gregcnc: ziper you should be able to cut the jaws with carbide and a stiff boring bar
04:12 PM Eric__: I feel like the condition of the chuck tells me that grinding is a lot better
04:12 PM gregcnc: whatever works
04:12 PM gregcnc: I've done both
04:13 PM Eric__: I suppose new jaws the right way around are out of the question
04:14 PM Eric__: ziper what kind of chuck is that, can you tell?
04:15 PM gregcnc: miss0r I think I would have left some material on the OD to skim after or use that central thread to help fixture it? idk
04:15 PM miss0r: well, it was held on the inside of that recess where the central thread is, with a three jaw chuck.
04:16 PM miss0r: I guess I was just afraid to damage the surface when tightening it... :-/
04:17 PM gregcnc: which operation moved it?
04:17 PM miss0r: using an 8mm peck drilling operation of the side of the part. Theres no good photo of my shamefull error
04:18 PM miss0r: theres two 3/8 BSF threads in the OF towards center on the side
04:18 PM miss0r: One of the two moved the fixture
04:22 PM gregcnc: is the part usable? Nice looking part overall
04:31 PM Tom_L: buy quality chucks to begin with
04:31 PM gloops: mine were quality, 90 years ago
04:32 PM Eric__: same with mine, Buck 6 jaw. That was before the high school auto shop class got ahold of it
04:32 PM Tom_L: they don't make that quality now
04:32 PM Eric__: there are some really high quality chucks. Cost a few thousand $
04:33 PM gloops: its that work factor though, kills horses, wears machines out
04:33 PM XXCoder: no way to weld in then mill it again?
04:35 PM Tom_L: and warp em?
04:46 PM -!- #linuxcnc mode set to +v by ChanServ
04:50 PM * JT-Shop needs to figure out how to cut a 6.5" hole in the center of an alum pie pan without destroying it
04:50 PM Tom_L: find a 6.5" pipe and sharpen the edge
04:51 PM XXCoder: small drill then get bigger and bigger
04:51 PM Tom_L: drill will pull it
04:51 PM JT-Shop: aluminum pie pans don't like getting drilled or milled
04:52 PM Tom_L: sammich it between 2 other pieces and machine it
04:52 PM XXCoder: use 2 plywood and drill though it
04:52 PM Tom_L: cut it with tin snips
04:52 PM JT-Shop: that would be ugly
04:52 PM XXCoder: invent teleporter and teleport a cylinder out
04:53 PM gloops: find a 6.5 inch cooker ring and leave it on full for a couple of hours
04:53 PM XXCoder: (that would be amazing funny story in teleportion invention)
04:54 PM gloops: without a diamond tip hole cutter, probably hack a smaller hole out then grind it to size
04:54 PM XXCoder: so far best I think is either between 2 wood plates, and just cutting out
04:55 PM XXCoder: gloops yeah drum sander maybe
04:55 PM gloops: something like that yeah
04:56 PM XXCoder: make divot, use scribe to make clean circle
04:56 PM XXCoder: drill few times with differing sizes
04:56 PM XXCoder: then finally drum sander to line
04:56 PM JT-Shop: scribing a circle is easy
04:56 PM Tom_L: buy a pie tin with a hole already in it.
04:57 PM JT-Shop: the outside of the circle is the keeper part
04:57 PM JT-Shop: got a link to one?
04:57 PM gregcnc: what kind of pie will this be?
04:57 PM JT-Shop: https://spyderstore.com/index.php?route=product/product&path=59_68&product_id=81
04:58 PM XXCoder: rain guard
04:58 PM Tom_itx: https://www.amazon.com/Tart-Pans-Removable-Bottoms/s?k=Tart+Pans+with+Removable+Bottoms
04:58 PM XXCoder: interesting
04:58 PM Tom_itx: not quiet what you're after
04:58 PM JT-Shop: I've seen a rotary shear before somewhere
04:59 PM JT-Shop: the hole looks too big or too small
04:59 PM Tom_itx: you're just too damn picky!
05:00 PM XXCoder: how many you need?
05:00 PM JT-Shop: 25
05:00 PM XXCoder: if many, you probably could make press form
05:01 PM Tom_L: do tell what for
05:01 PM gregcnc: how have you been making them?
05:01 PM Tom_L: back to the round punch
05:02 PM Tom_L: you _could_ hand flame harden it with a torch
05:02 PM JT-Shop: I plasma cut one then spend all day cleaning that up then I machined one and spend a day cleaning that mess up
05:02 PM gloops: how thick is the plate?
05:02 PM Tom_L: pie tin
05:03 PM Tom_L: or make a male and female punch set
05:03 PM gloops: thats thin
05:03 PM XXCoder: can you make punch that just cuts regular pie pans?
05:03 PM gloops: they do a 160 core bit for glass/ceramic dunno how that would like ally
05:03 PM JT-Shop: 0.047" thick
05:03 PM XXCoder: it'd be way faster once setup
05:03 PM gloops: 160mm
05:03 PM XXCoder: and repeatable
05:03 PM Tom_L: alum... should be easy to punch
05:04 PM XXCoder: yeah get inside diameter right on pipe, and build a slug to fit inside
05:04 PM XXCoder: push though cut
05:05 PM XXCoder: https://www.daytonlamina.com/sites/default/files/image/ec-clearance-diagram.png
05:06 PM Tom_L: put an exacto blade on a 'fly cutter' and clamp the pie tin down and feed the blade down on the mill with a wood sacrificial board under it
05:07 PM gregcnc: one of these scary things
05:07 PM gregcnc: https://www.amazon.com/MIBRO-460271-Adjustable-Circle-Cutter/dp/B001C00ZRK
05:08 PM gloops: hey ive got one just like that somewhere, never used it
05:08 PM gloops: would be ok in a drill press slow
05:08 PM JT-Shop: hmm biggest conduit punch I have is 4 1/2" and biggest hole saw is 5 1/4"
05:09 PM JT-Shop: that scares me
05:09 PM CaptHindsight: what if you're on Gilligan's Island, what are your choices for hole cutting?
05:09 PM Tom_L: shark's teeth
05:09 PM JT-Shop: if I'm on the island I'll just use Mary Ann's skirt
05:10 PM CaptHindsight: pedal powered bamboo lathe and mill
05:11 PM Tom_L: gregcnc, that was kinda my idea with the exacto blade
05:11 PM gregcnc: yes
05:18 PM CaptHindsight: https://cdnmetv.metv.com/QKS7R-1456337668-2056-list_items-sewing_machine.gif
05:18 PM Tom_L: XXCoder, we used to make dies for aluminum sheet similar
05:18 PM Tom_L: cork inside for extraction
05:18 PM XXCoder: JT-Shop: can mill one on lathe?
05:18 PM roycroft: i would snarf some diamonds from mrs. howell and make cutters with them
05:18 PM JT-Shop: my Samson could swing it if I could figure out how to hold it
05:18 PM JT-Shop: now that's a good idea
05:18 PM XXCoder: hole cutter nice
05:18 PM JT-Shop: https://www.amazon.com/LICTOP-Cutting-Cornhole-Plastic-Fiberboard/dp/B07KF4P33Q
05:18 PM roycroft: but i'd try using mary ann's skirt first
05:18 PM CaptHindsight: https://cdnmetv.metv.com/agqFU-1456338742-2059-list_items-telegraph.gif
05:18 PM roycroft: just so i could get her out of her skirt, even though i know it wouldn't work
05:18 PM XXCoder: just use coconuts to make mill and press
05:18 PM gregcnc: with the tail stock
06:09 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20210310_133940.jpg
06:10 PM skunkworks: (what I have pulled out so far upgrading the work network...)
06:10 PM XXCoder: you have way too many switches
06:10 PM XXCoder: too bad youre far, or otherwise I'd nab one ;)
06:37 PM JT-Cave: long day...
06:38 PM XXCoder: oh well heh
06:40 PM roycroft: there is no such thing as too many network switches
06:40 PM roycroft: they are to network engineers as clamps are to woodworkers
06:40 PM roycroft: or cramps, to british woodworkers
06:41 PM JT-Cave: lol
06:42 PM XXCoder: lol
06:44 PM JT-Cave: and the rains have started... I did get the white oak I sawed up last week labeled with the date cut and the thickness the end color denotes the wood type
06:45 PM roycroft: nice
06:45 PM roycroft: i love white oak
06:45 PM XXCoder: wood to see that done
06:45 PM roycroft: i loathe and despise red oak
06:45 PM Tom_L: we're supposed to get rain tomorrow
06:45 PM JT-Cave: seems more important to know when I sawed it up now that I have a mixed lot
06:45 PM roycroft: it's sunny and warm here
06:45 PM JT-Cave: why don't you like red oak?
06:45 PM roycroft: the guy who bought my edge sander is coming to pick it up in a few minutes, so it's nice that the weather is decent
06:45 PM roycroft: it's ugly
06:45 PM roycroft: and reminds me of the 1980s
06:46 PM JT-Cave: lol
06:46 PM JT-Cave: for chicken furniture it does not matter much
06:46 PM roycroft: which imo is the decade that should be forgotten more than any other decade in the 20th century
06:46 PM Tom_L: he's a brown mahogany sort
06:47 PM JT-Cave: and the 60's with the ugly green they had
06:48 PM roycroft: avocado green and mustard yellow
06:48 PM JT-Cave: I have two white oak trees well one that split up about 5' into two to cut down when the weather cooperates that's about 100' tall
06:48 PM roycroft: and the thick shag carpets
06:48 PM JT-Cave: yeah
06:49 PM JT-Cave: shag carpet rake
06:49 PM Tom_L: shag carpet in pannel vans
06:49 PM roycroft: usually chocolate brown
06:49 PM roycroft: or bright red
06:50 PM JT-Cave: and dark paneling...
06:50 PM ziper: I went ahead with the dremel method https://i.imgur.com/ojVijAj.jpg
06:51 PM JT-Cave: hmm I wonder if a down cut router bit would cut the pie pan without making a mess if I fixture it right
06:52 PM Tom_L: sure way to find out...
06:52 PM JT-Cave: yup
06:52 PM roycroft: indeed
06:52 PM Tom_L: a 3rd mess to clean up :)
06:54 PM JT-Cave: hmm flood watch until 6pm Sat
06:55 PM Tom_L: i think we are too
06:55 PM Tom_L: nothing yet though
06:55 PM Tom_L: 40% chance starting at 3am
06:56 PM Tom_L: 90% by 6
06:56 PM JT-Cave: heavy rain tonight and friday night and saturday
06:57 PM JT-Cave: good thing we are above the high water mark
06:57 PM Tom_L: i'll be on the road
06:57 PM JT-Cave: yuck
06:58 PM Tom_L: at least 4 wheels instead of 2 or 3 :)
06:58 PM JT-Cave: I've been in some heavy rain on 2 and 3 wheels for sure
06:58 PM Tom_L: no fun
06:59 PM JT-Cave: I've had people try and flag me over it's raining so hard but screw that I'm finding a roof
07:02 PM JT-Cave: time to wander upstairs
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07:11 PM roycroft: so i'm not eligible this week - i just got the email from the county health department
07:11 PM roycroft: maybe next week
07:11 PM roycroft: they're still pomising the 29th at the latest
07:11 PM XXCoder: yeah i did survey. not elihible
07:12 PM roycroft: yesterday was the president's 50th day in office
07:12 PM roycroft: he promised 100 million jabs in the first 100 days
07:12 PM roycroft: yesterday the number was at 75 million
07:12 PM roycroft: and projected to hit 100 by next week
07:12 PM roycroft: so i'd say things are significantly ahead of schedule
07:13 PM roycroft: i must say, btw, that he has been the most boring president in a long time so far
07:13 PM roycroft: i like that
07:13 PM XXCoder: its at 93m now
07:13 PM XXCoder: so he only needs 7m more to reach goal
07:14 PM roycroft: total, or since he took office?
07:14 PM XXCoder: yes! boring oresidents is best
07:14 PM roycroft: the number i got last night was 75 million since he took office
07:14 PM XXCoder: since jan 20 I think
07:14 PM roycroft: ok
07:14 PM roycroft: the pace of vaccinations is accelerating, so i find that number believable
07:14 PM XXCoder: "Now, the country appears on pace to hit the 100 million dose mark a month ahead of schedule. "
07:21 PM roycroft: *chuckle*
07:21 PM roycroft: i just got a call from the guy with the jointer i was slightly interested in
07:21 PM roycroft: i'm definitely staying far way from it after that
07:21 PM XXCoder: what was wrong?
07:22 PM roycroft: this is the machine:
07:22 PM roycroft: https://portland.craigslist.org/clc/tls/d/oregon-city-grizzly-jointer/7289411196.html
07:22 PM roycroft: it was listed in "like new" condition
07:23 PM roycroft: which made me dubious
07:23 PM XXCoder: seems ok. does it whisper evilness in nights?
07:23 PM roycroft: it's a 2 hour drive to get it
07:23 PM XXCoder: "like new" wha
07:23 PM roycroft: i asked him if he had power available for testing it
07:23 PM XXCoder: if its "like new" then its very badly mainained
07:24 PM roycroft: and he said "that machine is brand new - it's in perfect condition - i don't have 220 where it's stored, but there's no way it doesn't work perfectly"
07:24 PM XXCoder: it smells so much I can smell it here, and i cant even smell
07:25 PM roycroft: i'd pay his asking price for it if i could confirm that it runs smoothly
07:25 PM roycroft: i could deal with the rust and mess
07:25 PM roycroft: even if i needed to have the bed resurfaced it would be a good deal
07:25 PM roycroft: but if i have to do that plus deal with motor/cutterhead/whatever issues, it's a money sink
07:26 PM XXCoder: makes sense
07:26 PM roycroft: my jointer is at least as old as that one, and it's gotten heavy use, but it's in better shape than that one
07:27 PM roycroft: but yeah
07:27 PM roycroft: the mag switch is $100
07:27 PM XXCoder: yeah i suspect maintance thing if its "like bew"
07:27 PM roycroft: the motor over $200
07:27 PM roycroft: the cutterhead $400
07:27 PM roycroft: so of any of those things have problems it's a lot of money
07:27 PM roycroft: and without power i can't test any of that
07:28 PM roycroft: the one i want to buy new is $2k
07:28 PM roycroft: so $750 would be nice
07:28 PM roycroft: but not if it's a potential basket case
07:29 PM roycroft: the one i want has parallelogram ways anyway, not dovetail ways
07:29 PM roycroft: so a lot easier to adjust for twist
07:29 PM roycroft: and i already suspect that the one on cl might be twisted or warped
07:30 PM roycroft: which i can easily check without having power to the unit
07:30 PM roycroft: but i'm not going to drive 2 hours each way to buy something i can't power up first
07:30 PM XXCoder: i do want to have small wood shop
07:30 PM XXCoder: small because i wont be making large stuff
07:31 PM XXCoder: mainly stuff to prep or finish
07:31 PM roycroft: i don't make large stuff often
07:31 PM roycroft: but i still want a bigger jointer
07:31 PM roycroft: pwd
07:31 PM roycroft: ack
07:33 PM roycroft: i'm considering getting a combination jointer/planer
07:34 PM roycroft: just because that would get me a 12" wide jointer bed
07:34 PM roycroft: which would be really nice, as i plan on making a fair amount of veneer that may be up to 12" wide
07:34 PM roycroft: but my current thicknesser is 15", and i'd have to compromise 3" of width
07:35 PM roycroft: and the combo unit's jointer bed is not nearly as long as on a stand-alone 8" jointer
07:35 PM roycroft: it's really a tough decision
07:35 PM roycroft: i hate having to make compromises
07:37 PM XXCoder: cool :)
07:42 PM roycroft: btw
07:42 PM roycroft: https://roycroft.us/EdgeSander/
07:42 PM roycroft: that's the sander i just sold
07:42 PM roycroft: i described it as "gently used"
07:42 PM roycroft: not "new" or "like new"
07:42 PM XXCoder: it looks great
07:42 PM XXCoder: scummy seller'd discribe it as new
07:42 PM roycroft: it's in way better shape than that jointer
07:43 PM XXCoder: yeah
07:44 PM roycroft: the guy who bought it is very happy with the deal, and so am i, so it was the right deal
07:44 PM roycroft: i wish other cl sellers would look at things the same way
07:45 PM XXCoder: yeah
07:53 PM skunkworks: roycroft: this was switch hooked to switch hooked to switch hooked to switch.. Now we have some fiber runs to each location. Feels good.
07:54 PM skunkworks: So 10G backbone
07:54 PM skunkworks: people noticed.. :)
07:55 PM skunkworks: (we move a lot of big files around)
07:55 PM roycroft: i try to keep switch hops to 3 or less in a network segment
07:55 PM skunkworks: this was a few more than that...
07:55 PM roycroft: so it seems
07:55 PM roycroft: and that alone could cause problems
07:56 PM XXCoder: https://www.kickstarter.com/projects/culturehustle/spray-the-everlasting-artist-eco-spray-paint-system
07:56 PM XXCoder: pretty cool
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08:26 PM ziper: success. the endmill no longer has visible runout
08:26 PM XXCoder: nice! whats you doi
08:27 PM XXCoder: threaten it? ;)
08:28 PM ziper: ground the chuck jaws back a bit
08:30 PM XXCoder: nice
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