#linuxcnc Logs

May 30 2022

#linuxcnc Calendar

01:37 AM Deejay: moin
01:59 AM randy: morning
03:33 AM travis_farmer853: G'Morning ☕
05:42 AM Tom_L: morning
07:16 AM JT-Cave: morning
09:57 AM _unreal_: well, I think the next part I'll make are the two 1/4" support plates to the Z
09:57 AM _unreal_: parts
10:08 AM _unreal_: There got my nesting done.
10:16 AM Tom_L: _unreal_, what fixturing do you use to hold your parts?
10:16 AM _unreal_: https://drive.google.com/drive/folders/1PAgv2L3UJL2gOle35AczsBejKtVXsq5d?usp=sharing
10:16 AM _unreal_: just put two new photos up
10:17 AM _unreal_: depends on what I'm doing
10:17 AM _unreal_: my cnc main work bed has a grid of 1x1" 6-32 threaded holes YES SMALL i KNOW but its only a 7x12" work area cnc
10:17 AM Tom_L: those take forever to load
10:17 AM _unreal_: ?
10:18 AM _unreal_: not sure what you mean
10:18 AM Tom_L: google is slow
10:18 AM _unreal_: oh
10:18 AM Tom_L: why the cutout in the middle?
10:19 AM _unreal_: look at the cad drawings
10:19 AM _unreal_: z axis design bottom
10:19 AM CloudEvil: https://ep1.pinkbike.org/p4pb15746917/p4pb15746917.jpg On fun with gearing.
10:21 AM _unreal_: Tom_L the depression or deletion is space for my leadscrew
10:21 AM Tom_L: parabolic arc would have been a much better design choice
10:22 AM Tom_L: on the bike, not your mill
10:22 AM _unreal_: Tom_L, my lead screw is made from again HDPE
10:23 AM _unreal_: from the bottom view what you see is the face of one of 4 3/4" nuts
10:25 AM _unreal_: they have 4 6-32 holes. I link 4 of them together. then TAP the center hole. the right side "wing" has a hole for mounting. THE MAIN zx carriage frame has 4 huge holes. that is for mount access. if I need to replace a warn out nut. its nothing more then popping out four screws. and spinning the z till the nut falls out at the bottom.
10:25 AM _unreal_: load a new one spin it up and lock in place with the 4 screws
10:25 AM _unreal_: its such a wonderful system. they dont ware out or loose tolerance fast at all.
10:26 AM Tom_L: how thick are the nuts?
10:26 AM _unreal_: with proper lube (super lube) the resistance is very very low
10:26 AM Tom_L: 3/4
10:26 AM _unreal_: this machine is using 1/2-13 thread err going to be
10:26 AM _unreal_: each nut segment is yes 3/4" starboard
10:27 AM Tom_L: acme?
10:27 AM _unreal_: no threaded rod
10:27 AM Tom_L: aarg
10:27 AM _unreal_: I'm using 1/2-13 stainless steel threaded rod
10:27 AM Tom_L: i doubt you could get 13 in acme anyway
10:28 AM _unreal_: I dont have an ACME tap anyways
10:28 AM Tom_L: what boat did you swipe that off of?
10:28 AM Tom_L: :)
10:28 AM _unreal_: haa haa.. purchased the threaded rod
10:28 AM _unreal_: though the aluminum I'm using I did
10:28 AM _unreal_: one of the boats had some big aluminum something or other cut out
10:29 AM _unreal_: I got a bunch of 1/2" plate scraps
10:33 AM _unreal_: so at this point my next steps are just getting all of the bolt to plates cut out
10:33 AM _unreal_: so the support gussets for the head of the z axis, the main stepper platform
10:34 AM _unreal_: "" head plate ""
10:35 AM _unreal_: back later got to go help the elderly neighbor
11:12 AM Tom_L: JT-Cave, where do i find your latest config tool?
11:13 AM Tom_L: i'm finally fixing the debian install...
11:13 AM Tom_L: can test now
11:14 AM Tom_L: .. soon
11:14 AM Tom_L: :)
12:00 PM -!- #linuxcnc mode set to +v by ChanServ
12:01 PM Tom_L: oh.. your util isn't on github?
12:02 PM JT-Cave: yes, but the online docs are not
12:02 PM Tom_L: oh
12:02 PM JT-Cave: you want the github url?
12:02 PM Tom_L: i have it somewhere
12:02 PM JT-Cave: github.com/jethornton/mesact
12:02 PM Tom_L: still setting up debian
12:03 PM Tom_L: what command lets you run mesaflash from any dir?
12:03 PM Tom_L: i forget..
12:03 PM JT-Cave: if it's installed it's mesaflash
12:03 PM Tom_L: so it's installed like any other app
12:03 PM Tom_L: no i had to build it
12:03 PM JT-Cave: yes to make install
12:03 PM JT-Cave: not just make
12:03 PM Tom_L: ahh ok
12:04 PM Tom_L: thanks
12:04 PM Thorhian7490[m]: Hey guys, I need to make some holes using my milling machine for 1/4" hardened dowel pins for locating a steel plate. Can you get the tolerances typically needed for such a purpose using helical interpolation by cutting the hole using an endmill or would you recommend buying a decent chucking reamer?
12:04 PM Tom_L: i'd get a reamer
12:04 PM JT-Cave: second that
12:05 PM Tom_L: and if you want the mating part to slide in nice get one .002" oversize too
12:05 PM JT-Cave: drill 1/64" under size then ream
12:05 PM Tom_L: i've got a .250 and .252" for 1/4" dowels etc
12:05 PM JT-Cave: reamer is 1/2 the rpm and twice the feed of the drill bit
12:06 PM Thorhian7490[m]: You got any recommendations for reamers? I'm hesitant to buy any off of amazon, especially the chinese crud, but I can't afford buying some $60-$70 harvey tool reamers lol.
12:06 PM Tom_L: i dunno, i get mine local
12:06 PM JT-Cave: I get my reamers from MSC
12:06 PM Tom_L: not sure what they are
12:06 PM Tom_L: MSC or travers
12:07 PM Thorhian7490[m]: Guessing you have a special shop locally Tom?
12:07 PM Tom_L: yeah
12:07 PM Tom_L: we have quite a few since it's an aircraft town
12:08 PM Thorhian7490[m]: I figured. I don't lol, and your typical Ace or even regular fastenal doesn't have chuck reamers on hand lol.
12:08 PM Tom_L: and
12:08 PM Tom_L: if you really wanna pay too much go to Grainger
12:08 PM Thorhian7490[m]: XD
12:16 PM Thorhian: I'm not really sure If I can afford these reamers lol, let alone buying a new drill that's specifically 1/64" under 1/4" lol
12:32 PM Thorhian: Do typical carbide drill end mills get anywhere close to the tolerances needed for dowel pins?
12:39 PM Rab: Thorhian, I've bought a bunch of used, name-brand reamers off eBay. In fact the 1/4" reamer is the one I use the most. They all seemed to be in serviceable condition.
12:40 PM Rab: The best deals are for a lot-o-reamers, but there are individual ones too. I'd do that again over Amazon mystery meat.
12:43 PM Rab: This one claims to be new, the flutes look a little shorter than what I'm familiar with: https://www.ebay.com/itm/363834137770
12:45 PM Rab: This one's alleged to be .252: https://www.ebay.com/itm/313986596048
12:58 PM Rab: 1/64" under .250 would be 15/64", of course, which shouldn't be too hard to find. 6.0mm (.2362) and size A (.234) would likely work too, and those are pretty common.
01:11 PM Thorhian: Thanks Rab :) I'll have to keep that in mind. I just found out that McMaster-Carr seems to have sane prices for both precision dowels and HSS reamers.
01:15 PM Rab: McM is typically quality name-brand stuff, too, even though they don't disclose the brand up front.
01:17 PM Thorhian: It's way better than mystery meat from Chinese sellers on amazon and ebay lol.They also have actual tolerance specs that I can trust too.
01:18 PM Thorhian: So glad I tried the cultivate plugin...
01:45 PM ZincBoy[CAON]066: End mills will typically be 1-2thou undersize. They won't match a reamed hole for dimensional tolerance.
01:46 PM _unreal_: plus runout be it bit or machine flex
01:50 PM XXCoder: Rab: wow thats short for a reamer
01:50 PM XXCoder: "arent you short for a stormtrooper"
01:51 PM XXCoder: even shorter https://www.ebay.com/itm/352627460217
01:54 PM ZincBoy[CAON]066: You would really want a floating holder with one of those or it is just going to act like an endmill.
01:58 PM Rab: This one hurts, especially by local standards, unless they dropped a zero. https://austin.craigslist.org/tls/d/austin-deckel-cnc-machine/7489853528.html
01:59 PM Rab: Looks like about a 4,000lb machine from the manual, so I don't think they're kidding about the forklift.
02:02 PM travis_farmer853: RANT: i wish my internet was more stable right now... currently getting WWW on my laptop by using my cell phone as a WiFi hotspot.
02:02 PM travis_farmer853: i would really like to load up a computer i have had kicking around, just to see if the latency is any better, as well as the display performance.
02:02 PM travis_farmer853: current machine, a Dell PowerEdge R200, works alright, but only has 2GB of ram, and crap video performance (lots of stuttering)... mainly just an experiment to see if it is better or not. but without the house internet working, i would have no internet to install anything on the computer...
02:02 PM travis_farmer853: just very frustrating, and i can say that i hate DSL...
02:05 PM CaptHindsight[m]: travis_farmer: hah stable and internet
02:05 PM CaptHindsight[m]: ah you likely meant the signals and not the people
02:07 PM travis_farmer853: yes, the signal. i have to hard-reboot the router every 10 minutes to have home internet. the phone line is very bad, and the phone company refuses to fix it...
02:07 PM travis_farmer853: on the 7th though, we switch over to Cable internet (same cable as CableTV), but i just have to hold out until then
02:07 PM Tom_L: what's your dl speed now?
02:08 PM travis_farmer853: over my phone or DSL?
02:08 PM Tom_L: DSL
02:08 PM CaptHindsight[m]: travis_farmer: I know the pain
02:08 PM travis_farmer853: supposed to be 25M
02:09 PM CaptHindsight[m]: went from cable internet back to DSL for a few years when we moved, Comcast lied about service, (imagine that)
02:10 PM CaptHindsight[m]: I asked them for 4 DSL lines since each was supposedly 10mbit
02:10 PM travis_farmer853: sounds frustrating, Capt
02:10 PM travis_farmer853: i hope Cable is better than DSL, here
02:10 PM Tom_L: it should be
02:10 PM Tom_L: i'm @ 100mb i think
02:10 PM CaptHindsight[m]: while I was on the phone trying to set up the service it went down, they gave me a month free
02:10 PM Tom_L: depends what tier you get
02:11 PM travis_farmer853: Tom_L: can i move in with you? LOL
02:11 PM Tom_L: i think i could have 500
02:11 PM CaptHindsight[m]: yeah the tradeoff with home vs business is speed vs bits/month
02:11 PM Tom_L: sry 1gb
02:11 PM Tom_L: :)
02:12 PM CaptHindsight[m]: business service is far more reliable and lower latency
02:12 PM CaptHindsight[m]: but costs more
02:12 PM Tom_L: but gb is $110/mo
02:12 PM CaptHindsight[m]: home is faster, less reliable and usually has a cap/month
02:12 PM Tom_L: i don't need that much
02:13 PM travis_farmer853: i think regardles of what speed DSL, it would be crap for me, as the line is so bad. i can get 30M Cable for about $50
02:14 PM Tom_L: if i were to ever upgrade though that's what i'd get... 500mb is $3 cheaper
02:14 PM travis_farmer853: i run my own website server, but nobody can use it now, as my home internet is down. i am paying for a domain nobody can access...
02:16 PM travis_farmer853: although... it just worked... i can never tell... LMAO
02:18 PM CaptHindsight[m]: which DSL service?
02:18 PM travis_farmer853: Consolidated Communication, i think it may be a local company
02:18 PM CaptHindsight[m]: i think we actually had AT&T
02:20 PM CaptHindsight[m]: was terrible, they only had maybe 100mb TO the DSLAM and capped everyone at 10
02:21 PM travis_farmer853: 10M sounds slow...
02:21 PM -!- #linuxcnc mode set to +v by ChanServ
02:21 PM CaptHindsight[m]: I was asking about 4 of the 10mbit lines, but their engineer didn't know how to avoid telling me that they would all be off the same switch and capped at 10mbit before the switch
02:22 PM CaptHindsight[m]: yeah moving back to 100 was nice
02:22 PM travis_farmer853: i wish i could afford Fiber, but that could also open up my webserver to faster hackers...
02:23 PM CaptHindsight[m]: they were even charging us extra for use over 100GB/mo on DSL
02:23 PM travis_farmer853: figures...
02:23 PM CaptHindsight[m]: just to gouge you
02:24 PM travis_farmer853: world runs on greed, and the assumption that nobody will notice
02:24 PM CaptHindsight[m]: and superstitions
02:26 PM travis_farmer853: yes, that too
02:26 PM CaptHindsight[m]: no matter where I work or live I have bad phone and or broadband service
02:27 PM CaptHindsight[m]: cable at work is great, but i have to go outside to use my cell reliably
02:27 PM Tom_L: metal building?
02:28 PM CaptHindsight[m]: and only 1/4 mile from the tower
02:28 PM CaptHindsight[m]: seems this tower is flaky
02:28 PM CaptHindsight[m]: steel roof on concrete building
02:29 PM CaptHindsight[m]: lots of rebar in the walls but there are big openings for doors and windows in the line of sight to the tower
02:29 PM CaptHindsight[m]: even my SMS get delayed
02:29 PM CaptHindsight[m]: yet 5 bars for signal
02:30 PM CaptHindsight[m]: I'm just too far away from the city
02:30 PM CaptHindsight[m]: they don't really care much about service out here
02:30 PM CaptHindsight[m]: just pay and shut up
02:31 PM travis_farmer853: i am lucky that Maine has good cell service near me
02:32 PM CaptHindsight[m]: as backup for DSL we had Clear wimax
02:32 PM CaptHindsight[m]: I put the modem in a plastic enclosure up on a small mast on the roof
02:33 PM CaptHindsight[m]: we got a reflected signal off a water tower that was on and off
02:33 PM travis_farmer853: how did you switch over between the two ISPs? change cable, or special router?
02:33 PM CaptHindsight[m]: when it worked we got 10-20mb/s
02:34 PM CaptHindsight[m]: we set it up with two ranges of IP
02:34 PM travis_farmer853: Hmmm, ok
02:35 PM CaptHindsight[m]: 5 years later Comcast trenched the 800 yeards
02:35 PM CaptHindsight[m]: then we moved
02:35 PM CaptHindsight[m]: s/yeards/yards/
02:36 PM CaptHindsight[m]: yeards would be silly
02:36 PM travis_farmer853: lol
03:01 PM roycroft: are you about, jt-shop (or wherever)?
03:05 PM * roycroft has one more quick machining operation to do and then it's finish/assembly time for his drawers
03:38 PM Tom_L: pcw-home ?
03:39 PM Tom_L: trying to connect to the 7i80. pwr led is lit, mesaflash says no board found however the user leds change each time i run mesaflash
03:39 PM Tom_L: ip:
03:40 PM pcw-home: Can you ping it?
03:40 PM Tom_L: ethernet is ok on the host... 7i92 returns fine
03:41 PM Tom_L: yes
03:41 PM Tom_L: haven't had it out in a while but it was working prior
03:41 PM pcw-home: does "mesaflash --device ethernet --addr --readhmid" work?
03:41 PM Tom_L: just trying to get this host pc set up again...
03:41 PM Tom_L: no
03:42 PM Tom_L: hang on lemme try adding ethernet to the line
03:42 PM pcw-home: that works if the card name is corrupted
03:42 PM Tom_L: yes
03:42 PM Tom_L: works
03:42 PM Tom_L: how to fix?
03:42 PM Tom_L: or can i?
03:43 PM pcw-home: Latest mesaflash?
03:43 PM Tom_L: i just pulled it from linuxcnc git
03:43 PM Tom_L: yes
03:43 PM pcw-home: you may need to supply the full name
03:43 PM Tom_L: huh, never have before
03:43 PM Tom_L: 7i80hd?
03:44 PM Tom_L: no..
03:44 PM pcw-home: yeah probably 7i80hd-16
03:53 PM Tom_L: damn..
03:53 PM Tom_L: you're a genius :)
03:53 PM Tom_L: you must have changed something along the way
03:53 PM pcw-home: well I broke it
03:53 PM Tom_L: it's ok, as long as i know
03:53 PM pcw-home: Yeah to add the 7I96S I had to change the way the name compares worked
03:53 PM Tom_L: np just a little frustrating :)
03:53 PM pcw-home: before --device 7i96 would work on a 7I96S
03:53 PM Tom_L: didn't need it for the 7i92
03:53 PM Tom_L: ahh
03:53 PM Tom_L: probably only one option on the 7i92
03:53 PM pcw-home: yeah all 7I92 models all have a EEPROM name of 7I92
03:53 PM Tom_L: in the return data you should add the corrected name so it can be found using --device ethernet
03:54 PM Tom_L: ok. thanks a bunch
03:55 PM Tom_L: mesaflash 3.4.3 the latest?
03:59 PM pcw-home: You may need to wait for the arp-cache timeout ( or specifically delete the entry )
04:00 PM pcw-home: (that's the usual reason things dont work at first when you swap ethernet endpoint hardware )
04:00 PM Tom_L: yeah i figure something like that
04:01 PM pcw-home: had to add arp card delete to our card init scripts
04:01 PM pcw-home: arp cache
04:02 PM Tom_L: you must have a routine in the vhd to update the user leds each time it's accessed :)
04:02 PM Tom_L: on the 7i80
04:02 PM pcw-home: Thats an option
04:03 PM Tom_L: ahh.. LEDtag?
04:03 PM pcw-home: (you can set which register the LEDs display, default EEPROM setting is RX pkt count)
04:04 PM pcw-home: no this is not at the VHDL level but rather an EEPROM option for all Ethernet cards
04:04 PM Tom_L: oh
04:06 PM JT-Shop: roycroft, momentarily from time to time
04:11 PM Tom_L: JT-Shop, is mesact_0.6.1_amd64.deb all i need?
04:16 PM Tom_L: cool beans
04:16 PM Tom_L: it works
04:17 PM Tom_L: haha. no surprise there.. it won't open my convoluted .ini file
04:27 PM roycroft: are you here now?
04:27 PM * roycroft is leaving again - it's not a big deal, and we can catch up later
04:47 PM JT-Shop: in and out
04:48 PM JT-Shop: Tom_L, yes
04:48 PM JT-Shop: it only opens ini files created by the tool
04:49 PM JT-Shop: create one to see the difference, a lot of items are added at the bottom for the tool
05:21 PM Tom_L: ok
05:59 PM Tom_L: JT-Shop, no 7i80DB _16 board found
05:59 PM Tom_L: mesaflash in terminal returns pinout
06:00 PM Tom_L: do you account for 2 ethernet cards?
06:01 PM Tom_L: sry HD board
06:18 PM Tom_L: tried the 7i72 and it was fine
06:20 PM Tom_L: need a 7i47S board
06:23 PM srk- is now known as srk
06:29 PM Tom_L: A program error occured in utilities.py line 491. MainWindow object has no attribute 'encoderGB'
06:30 PM srk- is now known as srk
07:27 PM roycroft: well, today is the day to finish setting up my band saw, as i have some veneer to slice, and a whole lot of drawer pulls to make
07:28 PM roycroft: the first step, of course, was to retrieve the wrench that i dropped inside it months ago
07:28 PM roycroft: once i made the retrieval tool, i got it on the first go
07:28 PM roycroft: it took about 10 seconds
07:28 PM roycroft: and making the tool took less than 5 minutes
07:29 PM * roycroft likes chalking up easy wins
07:36 PM XXCoder: nice
07:36 PM XXCoder: 3d print a cover for that hole
07:37 PM Tom_L: duct tape
07:37 PM infornography: ew
07:37 PM Tom_L: even better :)
07:37 PM XXCoder: I 3d printed a chuck. it was pretty cool
07:37 PM XXCoder: needed to clean it up a little then added some lathinium lube
07:41 PM XXCoder: this model https://www.thingiverse.com/thing:2670620
07:45 PM XXCoder: https://media.discordapp.net/attachments/497148713781952554/980991054364934144/unknown.png
07:45 PM XXCoder: my print lol
07:48 PM t4nk_freenode: mmmm it doesn't really look too well
07:48 PM t4nk_freenode: did you scale that down or something?
07:48 PM XXCoder: its tran-clear pla
07:48 PM t4nk_freenode: but the big question is if it works of course
07:48 PM XXCoder: so you can see inside and see its infill, so it looks muddled stuff but its clean print
07:49 PM XXCoder: works perfectly
07:49 PM t4nk_freenode: been thinking about printing this several times, but I didn't trust it enough
07:49 PM XXCoder: honestly I use it as fidget thibng
07:50 PM t4nk_freenode: how long did it take to print?
07:51 PM XXCoder: if you want to print it, use 0.20 laters, fairly slow print speed, and you will need to put it together, open and close it few times, then mark jaws (you can see my mark on one of jaws) then finally lathium lube inside surface (where spirl gear touches), jaws gears, jaws sides where it touches chuck
07:51 PM XXCoder: put it togethere and it will move quite smoothly
07:51 PM XXCoder: oh not very long. 3 hours?
07:51 PM XXCoder: less than 3 hours
07:52 PM XXCoder: theres numbers on jaws, but with clear you cant see it lol
07:52 PM XXCoder: letters actually lol
07:52 PM t4nk_freenode: ... I wasn't gonna say anything :b
07:54 PM t4nk_freenode: maybe I'll try it after I get my machine back up
07:54 PM XXCoder: well even if its not great for machining with, its good for fidget lol
07:55 PM t4nk_freenode: I sort of got some provisions for a 4th axis on the base, may print two of those chucks as a tryout
07:58 PM XXCoder: cool :)
07:58 PM XXCoder: might want real metal umm whats that clip thing called
08:00 PM t4nk_freenode: ? the jaws you mean?
08:01 PM XXCoder: on, the thing that holds in the base
08:01 PM XXCoder: *no
08:04 PM XXCoder: https://imgur.com/oezbeHB.png this one
08:06 PM t4nk_freenode: https://cdn.thingiverse.com/assets/82/c1/3a/62/f1/2022-01-21_15.52.24.jpg
08:06 PM t4nk_freenode: ahh
08:06 PM t4nk_freenode: sort of a locking rivet
08:09 PM t4nk_freenode: https://en.wikipedia.org/wiki/Circlip
08:09 PM t4nk_freenode: the one on my spindle fan has seen its best days
08:14 PM roycroft: there is now an excellent chance that i'll be able to assemble some drawers today
08:14 PM roycroft: i just put the final coat of shellac on the insides of the first st
08:14 PM roycroft: set
08:14 PM XXCoder: roy nice
08:14 PM roycroft: yeah, it will be nice
08:15 PM roycroft: i can only glue up two at a time, because while i have a buttload of clamps, i don't have enough
08:15 PM XXCoder: t4nk, the circlip on printed chuck works fine with holding rod but not too great, too much grip and rear pops off
08:16 PM roycroft: but even so, i really only need to clamp them for a half hour or so, so if i leave them in clamps for an hour i'll be good to go, and can probably get two sets done tonight
08:16 PM roycroft: i only have room to applly finish to four sets of drawer sides + 2 drawer bottoms at a time, so that will work out nicely
08:17 PM roycroft: my band saw is all set up now, so i'm going to see if i can take a wafa thin slice off some wide hardwood
08:17 PM roycroft: if i can take a 0.030" slice i'll be really happy
08:18 PM roycroft: if i can take a 0.060" slice i'll be fine
08:37 PM _unreal_: milling my two support gussets
08:42 PM unterhaus: now I want to 3d print an air bearing spindle
08:45 PM _unreal_: out of what/
08:45 PM _unreal_: ?
08:45 PM _unreal_: t4nk_freenode, progress?
08:47 PM _unreal_: still amazing these new bits. to be milling at 1.5mm per pass 50mm feed rate in aluminum with my machine
08:48 PM _unreal_: its more or less dbl what I use to be able to do
08:48 PM _unreal_: love these new bits
09:02 PM ZincBoy[CAON]066: Which bits are you using?
09:04 PM -!- #linuxcnc mode set to +v by ChanServ
09:10 PM Tom_L: C clip
09:10 PM Tom_L: just catching up here..
09:12 PM roycroft: it is somewhat hard to control the board, but i got an even 0.090" resawing freehand
09:12 PM roycroft: that's with a 10" wide board
09:12 PM roycroft: if i set up some rollers for support, and perhaps add a tall featherboard, i should be able to go a lot thinner than that
09:27 PM _unreal_: ZincBoy[CAON]066, ahh some special 4 flute up cut
09:27 PM _unreal_: ZincBoy[CAON]066, THESE https://www.amazon.com/dp/B098DV79ZL?psc=1&ref=ppx_yo2ov_dt_b_product_details
09:28 PM _unreal_: ZincBoy[CAON]066, I use those and these https://www.amazon.com/gp/product/B078S3S956/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
09:32 PM _unreal_: finally the first part is almost cut out
09:46 PM _unreal_: quiet
10:03 PM _unreal_: just crazy my mini dust collector bottle is almost full again of aluminum filings
10:29 PM _unreal_: finally
10:29 PM _unreal_: gussets are now cut
10:30 PM drdoc: _unreal_: you'rew using those Yakamoz mills on aluminum?
10:30 PM _unreal_: yes
10:31 PM drdoc: how many spring cuts?
10:31 PM drdoc: ;-)
10:31 PM _unreal_: I also use these as well https://www.amazon.com/gp/product/B07F33Q6F1/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
10:32 PM drdoc: seems like they'd deflect a lot, being that long
10:32 PM _unreal_: I only cut 1.5mm per pass
10:33 PM drdoc: Hmmm
10:34 PM XXCoder: usual way to handle deflection unavoidable cuts is to have a finish cut
10:35 PM drdoc: aka "spring cut"?
10:44 PM XXCoder: not quite, it cuts a bit more
10:44 PM XXCoder: but then spring cut after that is great idea
10:45 PM _unreal_: not sure what a spring cut is never heard of that term before
10:45 PM _unreal_: ! wholy crap its almost midnight
10:45 PM XXCoder: essentally, just do cut again
10:45 PM _unreal_: I have not even had din
10:45 PM _unreal_: sigh
10:45 PM XXCoder: so any material left by deflection is gotten rid of
10:45 PM _unreal_: show/din and bed BLAAAA
10:45 PM _unreal_: got work tomorrow
10:46 PM _unreal_: hope you guys have shares of AMC.... stock market is going to go parabolic next week or soon after next week
10:46 PM _unreal_: dont know what I'm going to make just know I'm going to be very HAPPY CAMPER VERY SOON
10:49 PM XXCoder: drdoc: honestly it depends on how bad deflection is
10:49 PM XXCoder: it can be just stright to spring cut if its only small amount
10:49 PM XXCoder: if not, then finish with small cut then spring cut
10:50 PM drdoc: The shops I grew up in use the terms a little differently
10:51 PM drdoc: spring cuts get you close enough for a finish cut
10:51 PM XXCoder: interesting
10:51 PM drdoc: that may be a Mastercam idiosyncracy though
10:51 PM Tom_L: spring cut it to allow for any remaining tool deflection to be accounted for
10:52 PM drdoc: Tom_L: yes
10:52 PM Tom_L: it's generally just a couple thousandths or so
10:52 PM XXCoder: i ran into interesting shop langistics once
10:52 PM Tom_L: sometimes you can't do that though
10:52 PM XXCoder: one shop called test run air cut
10:52 PM XXCoder: but other just calls it dry run
10:53 PM Tom_L: for instance i doubt you would on stainless due to work hardening.. you'd have to be careful anyway
10:53 PM XXCoder: tom yeah sometimes tol is too tight for that
10:53 PM XXCoder: ah yes and hardening
10:53 PM Tom_L: if the tolerance is that tight you should be using other means anyway
10:54 PM XXCoder: i wished shop would do that once a wile lol
10:54 PM Tom_L: typical high tolerance areas are holes or turbine blades etc
10:54 PM XXCoder: like -0 +.0003" tol one
10:54 PM XXCoder: it was gap between ears
10:55 PM drdoc: Tom_L: I don't think anything beats a reamer for holes
10:55 PM XXCoder: nah there is one
10:55 PM XXCoder: forgot what name it is
10:55 PM XXCoder: kamal?
10:55 PM Tom_L: single point cutter...
10:56 PM Tom_L: the name escapes me now too... i'm tired
10:56 PM drdoc: well now I'm interested
10:56 PM roycroft: a boring head can be as accurate as a reamer
10:56 PM XXCoder: kaiser
10:56 PM Tom_L: that's it.. a boring bar
10:56 PM Tom_L: good ones have micrometers on them
10:57 PM XXCoder: always be aware of backlash in boring bars adjustment
10:57 PM Tom_L: of course.
10:57 PM Tom_L: any good machinist worth his salt knows that
10:58 PM roycroft: as well, emery paper on a wooden dowel can dial a bore to a couple tenths
10:58 PM Tom_L: or just wait and run it in the heat of the afternoon :)
10:58 PM XXCoder: tom yeah
10:58 PM drdoc: oh yeah
10:58 PM * roycroft has two drawers glued up, and intends to do another couple in a half hour or so
10:58 PM roycroft: i hope they fit :)
10:58 PM Tom_L: more than the rest of us for sure
10:59 PM Tom_L: but me too
10:59 PM drdoc: roycroft: that's how I hand-fit rivets
10:59 PM drdoc: dowel & emery paper
10:59 PM roycroft: that can be extremely precise, drdoc
10:59 PM drdoc: and slow as Christmas
10:59 PM drdoc: :-)
10:59 PM roycroft: yes
11:00 PM roycroft: precision generally takes time and effort
11:00 PM drdoc: yep
11:00 PM roycroft: the times that it doesn't can usually be attributed to luck
11:00 PM drdoc: I spent a year trying to school a solidworks guy in that
11:01 PM drdoc: 90% of his work, .1mm was plenty close
11:01 PM roycroft: i had to install a 1/16" radius cutter in my router table earlier today
11:01 PM roycroft: i eyeballed the height
11:01 PM drdoc: but he was a trade school grad with no shop experience at all, and he loved those .01mm drawings
11:01 PM roycroft: made a test cut
11:01 PM roycroft: and it was perfect
11:02 PM roycroft: i thought to myself "wow! that was lucky!"
11:02 PM drdoc: roycroft: nope
11:02 PM roycroft: not "wow! i'm good!"
11:02 PM Tom_L: roycroft, so do you atribute that to luck or skill?
11:02 PM drdoc: your eye is as precise as any tool out there
11:02 PM roycroft: but not as precise as my fingertip
11:02 PM drdoc: takes less trining though
11:02 PM drdoc: training
11:03 PM roycroft: tom_l: i expected to get close when i eyeballed it - that is skill
11:03 PM roycroft: to get it spot on the first time is luck
11:03 PM roycroft: perhaps luck influenced by skill
11:03 PM XXCoder: woodgears guy have that eyeball game site. lol
11:03 PM drdoc: heh
11:04 PM XXCoder: https://woodgears.ca/eyeball/
11:06 PM _unreal_: OK blaaa 3 day weekend back to work tomorrow
11:06 PM _unreal_: god I hope I make it big in the stock market
11:06 PM XXCoder: 10.82 score, in 78.9
11:06 PM XXCoder: bit worse than average
11:07 PM Tom_L: blame it on your mouse
11:07 PM XXCoder: nah I suck on it
11:07 PM _unreal_: if I fingers crossed make anything over 4mill in the stock squeeze I could retire
11:07 PM XXCoder: around average for me. 10 usually
11:07 PM _unreal_: dont see that happening but one can pipe dream...
11:09 PM roycroft: my score was 3.4 in 1274 seconds
11:09 PM roycroft: er, 127.4 seconds
11:09 PM roycroft: i'm slow but deliberate :)
11:09 PM XXCoder: was wondering on seconds LOL
11:10 PM roycroft: i was worst on the parellograms
11:10 PM roycroft: best at bisecting angles and convergence
11:17 PM roycroft: well, it's time to unclamp the first two drawers, check the fit, and assemble another two
11:41 PM roycroft: they will fit just fine
11:41 PM roycroft: and two more are glued up
11:41 PM roycroft: it will be nice to move to the installation phase of the project