#linuxcnc Logs
Nov 03 2018
#linuxcnc Calendar
12:00 AM XXCoder: now on to pareon series 1! :D
12:08 AM pink_vampire: how are you
12:09 AM XXCoder: mostly ok. yeserday work shift sucked lol
12:09 AM pink_vampire: why?
12:09 AM XXCoder: just combination of lack of sleep, dizzyness and dismovation
12:10 AM pink_vampire: we all known dismotivation one day or other
12:15 AM XXCoder: yeah
02:38 AM pink_vampire: what diode do i need to use in this circuit? https://www.geckodrive.com/support/servo-drives/returned-energy-dump.html
02:48 AM XXCoder: hopefully someone knows
02:48 AM pink_vampire: I hope too
02:55 AM Deejay: moin
03:12 AM nallar is now known as Ross
03:28 AM gloops: all dayer in york yesterday, v expensive and not good for my garage plans for today
05:15 AM jthornton: morning
05:20 AM gloops: 10ft bandsaw blade collected, this is 3tpi with extra set for green wood
05:20 AM MarcelineVQ: You should make a steam engine to run it with
05:21 AM jthornton: I brought home a Rikon band saw the other day
05:21 AM MarcelineVQ: And by make I mean get from someone else because steam is crazy deadly
05:21 AM jthornton: low pressure steam ain't that bad to mess with
05:22 AM MarcelineVQ: As long as it stays that way
05:22 AM MarcelineVQ: Forget one check valve and it's the last valve you'll forget :(
05:23 AM MarcelineVQ: check valve isn't the term I want, I mean those ones that release at a pressure threshold
05:23 AM jthornton: I know what you meant
05:23 AM MarcelineVQ: my water tank calls it a releif valve
05:24 AM gloops: its only a somewhat sickly 1.5hp motor on it
05:24 AM gloops: however it will do for testing purposes
05:26 AM jthornton: for sawing timber into lumber?
05:26 AM gloops: mainly for slicing logs up yeah, nothing massive - stuff i can carry
05:27 AM jthornton: what have you rigged up to dry the lumber?
05:29 AM gloops: nothing yet, have got a shed made with fibreglass sheets that lets sunlight in, ill rig something up in there - if this works, it gets quite warm even on nice days in winter
05:30 AM gloops: about 1 year per inch for air drying boards - a good bit less if the wood is for outdoor anyway
05:30 AM jthornton: my neighbor has something with clear fiberglass panels but I don't think he uses it anymore he just stacks it up under the carport with spacers between them so air can circulate
05:31 AM gloops: yeah thats all you need, at the local sawmill most of it isnt under any permanent cover its just got lorry sheets over it
05:32 AM gloops: about £20 a foot lol
05:32 AM jthornton: lorry sheets == tarps?
05:34 AM gloops: yeah, i went to look at some the other week - mostly crap under tarpaulins, youd have to cut half of it away for any decent boards
05:35 AM jthornton: yea seems like the tarps would not allow the boards to dry well unless they are elevated off the wood
05:36 AM jthornton: I did manage to get the freebee jointer working quite well, just a few more tweaks and it's ready for use
05:37 AM gloops: nice one re the jointer, i got mine levelled up too but realised i didnt make a good job of grinding the blades so got that to do again - ground a dip in the middle
05:39 AM jthornton: I put a new set in mine but could only find 1/8" thick blades so I had to grind them down to 3/32" to fit but for $20 I'm not complaining
05:40 AM jthornton: I still need to check the outfeed table to make sure it's parallel to the infeed table it seems to be making test cuts
05:41 AM gloops: theyre about £40 for mine here but ill give grinding them another go, i had them lined in true it was the clamping i think that bowed them after id lined them up
05:41 AM gloops: extra claming
05:43 AM jthornton: I found a Tormek T7 pretty cheap a while back and they guy had every accessory you could get for it https://www.tormek.com/uk/en/machine-models/tormek-t-7/
05:44 AM jthornton: I've not tried to sharpen any planer or jointer blades yet on it but my neighbor gave me some to learn how to sharpen with
05:45 AM gloops: very hit and miss without some kind of carriage or jig
05:46 AM jthornton: aye, I was trying to make a jig for my surface grinder( I used to sharpen nail point cutters for a living on surface grinders with lots of jigs)
05:49 AM gloops: well, suppose i better have a look at things bbl
05:50 AM jthornton: when you get back check out this https://www.youtube.com/watch?v=pUoEPgcqUFc
05:50 AM jthornton: he seems to be very straight forward and shows a way to sharpen jointer and planer knifes
05:52 AM MarcelineVQ: "what does keep is simple mean? well, it means to keep it simple" This guy is awesome :>
05:52 AM gloops: thats a good idea with the slit in the wood, im going to try that
05:53 AM jthornton: yea he has some awesome videos
05:58 AM gloops: ive been pondering mounting the block, blades and all in the lathe and running a toolpost mounted grinder over them, wont get much truer than that, but some messing about taking the block out etc
05:58 AM gloops: local place used to sharpen them for £10 but its closed
05:59 AM jthornton: wouldn't that change the angle to an arc then?
05:59 AM jthornton: or did you mean to index the shaft for each blade?
06:03 AM gloops: you would get arc yeah, whichever way the wheel was set to the blade
06:06 AM jthornton: making some louver vents for the shed to be chicken coop https://imagebin.ca/v/4LKENTbR1i2i
06:07 AM MarcelineVQ: nice looking pieces. any concern about bats with them?
06:08 AM jthornton: https://imagebin.ca/v/4LKEshM3FWzZ
06:08 AM jthornton: bats are good...
06:08 AM gloops: those look pro, in oak for a church - a bit bigger $0000s
06:08 AM jthornton: the back side will be covered with aluminum screen then with 1/4" welded wire hardware cloth
06:09 AM MarcelineVQ: bats are good, they're just not so good when they rest in weird spots and die hehe. they're not too bright
06:09 AM jthornton: just pine but I could have used oak from my neighbors saw mill
06:09 AM jthornton: I have a few bat houses around the property
06:40 AM Tom_L: morning
06:45 AM jthornton: morning
06:45 AM XXCoder: morning
06:45 AM XXCoder: cant sleep bah
06:46 AM XXCoder: tried to sleep earlier
06:48 AM jthornton: got a brazillion bugs flying around in front of the cameras... attracted to the IR light I guess
06:54 AM XXCoder: too bad no way to control em
06:54 AM XXCoder: unless you make something like anti-air blade and suck bugs up
06:54 AM XXCoder: you can feed chickens with em
06:55 AM jthornton: speaking of chickens the one I gave to the neighbor has a boyfriend now lol
06:55 AM jthornton: XXCoder: did you see the vent?
06:56 AM XXCoder: no
06:56 AM jthornton: https://imagebin.ca/v/4LKENTbR1i2i
06:56 AM jthornton: https://imagebin.ca/v/4LKEshM3FWzZ
06:57 AM XXCoder: the latest firefox sucks
06:58 AM XXCoder: unable to load sites and have to restart sometimes
06:58 AM XXCoder: yep one addon is broken
06:58 AM XXCoder: wow looks nice
06:58 AM XXCoder: plan to waterproof, varnash or?>
06:59 AM jthornton: just some barn paint
06:59 AM XXCoder: cool
06:59 AM jthornton: gotta put some aluminum screen wire on the inside then cover that with 1/4" hardware cloth
06:59 AM jthornton: I have one more to build this weekend and clean up my mess lol
07:01 AM jthornton: I pretty much got the digole color lcd library working so on to the next chicken programming lol
07:02 AM XXCoder: nice
07:03 AM jthornton: one of the hens laid a 9 gram fart egg last night lol
07:04 AM jthornton: smallest one I've ever seen
07:04 AM XXCoder: oh about vismach i was planning on writing a howto and give you info to finish docs with
07:04 AM XXCoder: but I just dont know. im not in great condition right now lol
07:04 AM jthornton: cool, you making a simple mill or lathe?
07:04 AM XXCoder: mill and router
07:05 AM XXCoder: both will be really basic
07:05 AM XXCoder: mill maybe modifed version of that weird horzional mill one
07:09 AM jthornton: the mill sounds easier than a gantry but I can't wait to see one with some comments so I can understand it and document it
07:10 AM XXCoder: most of it is pretty strightforward, its just making basic shapes, compile it into groups
07:10 AM jthornton: even better would be a single axis demo with just the basics to start one off
07:10 AM XXCoder: thats a idea yeah
07:11 AM XXCoder: from what I understand groups move together
07:11 AM XXCoder: so you wouldnt group column and z assembly
07:11 AM XXCoder: its final command that glues it all together and make a machine
07:12 AM XXCoder: I think its also a tree, as spindle and z assembly block may move together but only spindle spins
07:12 AM XXCoder: so make spindle, and other parts, group z assembly and spindle, then in final group, with other parts of machine
07:17 AM XXCoder: im making a simple tree for example
07:23 AM XXCoder: ok jthornton http://dpaste.com/1VN4B5V
07:24 AM XXCoder: I might be wrong but thats basic machine data structure tree for basic mill
07:25 AM jthornton: are you making parts from primitives?
07:26 AM jthornton: ah ok that is a blueprint for the structure :) cool
07:26 AM XXCoder: for basic examples yeah. for mill im probably just grabbing from horzional mill example. right now im too dizzy and too tired to seriously think
07:27 AM XXCoder: you can define any shape at any point before its being called I think so basucally like c variables
07:27 AM jthornton: I know that feeling sometimes... close to your bed time I assume
07:27 AM XXCoder: you can define it anywhere before its used
07:28 AM XXCoder: so for best readability you probably wanna define shapes or import dxfs whatever at top of machine file
07:28 AM XXCoder: then build it up tree
07:28 AM XXCoder: hen finally do final collection and call main
07:29 AM XXCoder: in that site exmple, #create a top-level model
07:29 AM XXCoder: model = Collection([base, saddle, head, carousel])
07:29 AM XXCoder: #Start the visualization
07:29 AM XXCoder: main(model, tooltip, work, 100, lat=-75, lon=215)
07:30 AM XXCoder: thats final collection command thats where we get complete machine. then we call main(), tooltip work last 3 is unknown
07:30 AM XXCoder: maybe its size of machine workspace
07:31 AM XXCoder: ah! its setting initial view point
07:31 AM XXCoder: i might be wrong on tooltip
07:32 AM XXCoder: wheres your docs entry again?
07:33 AM jthornton: http://linuxcnc.org/docs/2.7/html/gui/vismach.html
07:35 AM XXCoder: okay looking at same page ok
07:35 AM XXCoder: scargui shows nice stucture
07:36 AM XXCoder: tooltip = Capture()
07:36 AM XXCoder: tool = Collection([ tooltip, Sphere
07:38 AM XXCoder: i cut off rest but sphere is shape attached to tool
07:38 AM XXCoder: link3 = CylinderZ(0.0, l3_rad, l3_len, l3_rad)
07:38 AM XXCoder: # attach tool to end
07:38 AM XXCoder: link3 = Collection([tool,link3])
07:39 AM XXCoder: it defines link3 shape itself, adds tool group to it
07:39 AM XXCoder: link 2 does basically same, but larger cylinder, then collection([link3, link2])
07:39 AM XXCoder: since if link2 moves it affects everything linked to it
07:40 AM XXCoder: but if link3 moves it dont affect link2
07:40 AM gloops: hmm, well i have a blade running perfect on 2 wheels on a thing that slides backward and forward lol
07:40 AM XXCoder: if youre wondering, its a arm type machine. link1 is basically same as link 2 but even larger
07:41 AM gloops: put a few guides back on it and it might be a saw...just letting blade run a bit see if it will stretch, very limit of adjustment
07:41 AM XXCoder: link0 is base of machine
07:42 AM XXCoder: another cylinder but doesnt move. there is table that also groups work into it
07:42 AM XXCoder: final collection: link0, floor, table
07:43 AM pink_vampire: any tips how to cut accurate on a manual lathe?
07:43 AM XXCoder: it sucks that the BEST example is the most complex machine.
07:43 AM XXCoder: but after analizing how it works I think I get the grip
07:45 AM gloops: pink_vampire, remember the old adage, you can always take a bit more off, you cant put a bit back on
07:45 AM pink_vampire: gloops: this is how i work right now
07:45 AM * SpeedEvil metal-sprays gloops with 1.5mm of SS.
07:46 AM jthornton: mmm I smell bacon... bbib
08:06 AM jthornton: pink_vampire: I make a cut then measure then make the rest of the cuts
08:08 AM pink_vampire: jthornton: there is something like edge finder for a lathe?
08:11 AM XXCoder: jthornton: think most diffult one is creating linuxcnc HAL to use vismach
08:11 AM gloops: is it convenient to turn the chuck or some wheel by hand pink_vampire? for closer to target cuts and measureing etc, i always rotate the job hand until im happy
08:11 AM XXCoder: that area is very vague and no examples.
08:14 AM pink_vampire: lets say i have 10mm drill road, so it is ground and with true surface, ans i want to take 0.5mm cut and reduce the diameter to 9mm, is there a way to do it in one pass?
08:16 AM gloops: i personally would try to get the finish size in one cut
08:16 AM gloops: err wouldnt
08:17 AM pink_vampire: on the mill i touch the and, move the machine, and get it right.
08:17 AM gloops: but say you tried, take down a small shoulder on one end, step by step, measuring each time - when you get the size you want, run the cutter all way through at that
08:17 AM pink_vampire: and=edge*
08:18 AM gloops: if by accuracy you mean the diamter
08:18 AM pink_vampire: correct
08:19 AM gloops: if you want a good fit for another part you turned - turn the internal first, then the shaft, again its just a matter of keep checking, often you will get the perfect fit by filing or sanding the shaft for the very last bit
08:20 AM pink_vampire: i know
08:20 AM gloops: you can ink the part and touch the cutter tip until it marks the ink
08:21 AM pink_vampire: what about cutting grooves in intervals?
08:21 AM gloops: once you get used to the dials, they will help return to position
08:22 AM pink_vampire: but there is backlash
08:22 AM gloops: that will be consistent
08:25 AM jthornton: pink_vampire: you can use a dowel to measure with yes
08:30 AM gloops: a bit of thread cutting practice is a good way to get the hang of the dials, depending on the machine
08:30 AM gloops: im not a turner by any means but i have worked with some good old ones
08:32 AM gloops: now the boring bit of my bandsaw thing, need to devise some means of hold the log
08:33 AM gloops: couple of dogs to tap in that slide on something
08:34 AM gloops: https://www.ebay.co.uk/itm/Dasqua-Engineers-Dial-Depth-Gauge-0-6-Imperial-Ref-58224100/302688225491?
08:40 AM gloops: another thing you will find with 10mm rod pink_vampire, it will bend while youre cutting, in the middle obviously - get a travelling steady, take light cuts etc
08:41 AM JT-Shop: for small diameter stock sometimes it's best to take one heavy cut instead of several shallow cuts
08:42 AM gloops: putting more force on it though JT-Shop?
08:42 AM Tom_L: the angle of the cutter will effect the deflection too
08:43 AM Tom_L: cut along the axial plane moreso than the radial with a flat cutter
08:43 AM gloops: if it can spring in the middle it will judder off
08:43 AM SpeedEvil: gloops: If you cut to final diameter of (say) 5mm, from a 15mm blank, you have the 15mm blank supporting you up to the cut.
08:43 AM JT-Shop: if the final diameter is rather small and unsupported one cut using the strength of the larger diameter is better when possible
08:43 AM JT-Shop: what SpeedEvil said :)
08:44 AM gloops: hmm, i see what you mean
08:44 AM gloops: but 10mm rod is is going to bend anyway
08:44 AM gloops: so is 15, depending on the length
08:44 AM SpeedEvil: depends on the length
08:45 AM Tom_L: any stock deflects to a degree no matter the size
08:45 AM Tom_L: it is more noticeable on small stock
08:45 AM gloops: one cut = no second chance, travelling steady - no problem
08:45 AM * SpeedEvil wishes he could remember the recent video on this topic on youtube
08:46 AM SpeedEvil: Someone like edge precision, but not edge precision.
08:49 AM JT-Shop: if you have a traveling follower... if not
08:49 AM gloops: make one
08:49 AM SpeedEvil: https://www.youtube.com/watch?v=X-TkuQDWdbA - aha!
08:50 AM SpeedEvil: Joe Pieczynski was edge precision but not edge precision
08:50 AM gloops: https://www.ebay.co.uk/itm/Travelling-Moving-Rest-Steady-for-the-Mini-Lathe/362241623357?
08:50 AM SpeedEvil: https://www.youtube.com/watch?v=hXq_HfwG7dA also - on thinwall parts, and he has a number of useful videos around that time on fixturing
08:58 AM {HD}: I am using artcam to generate some gcode. It is my first time using artcam with linuxcnc. What do I select for “machine output file is formatted for:”?
09:01 AM gloops: linuxcnc? or emc2?
09:06 AM {HD}: I am running lcnc 2.7.14 isn’t emc2 the old name of lcnc?
09:08 AM gloops: yes, i dont use artcam but im guessing you have options to generate gcode for various controllers, emc2 should work if you dont have linuxcnc option, it does for me with the apps i use anyway
09:09 AM {HD}: Oh! I will see if there is an emc2 in the list.
09:12 AM {HD}: Not in the list. I’ll see if there is one I can pull from elsewhere.
09:13 AM gloops: https://forum.linuxcnc.org/20-g-code/28130-suitable-artcam-post-processor
09:14 AM {HD}: Just read that post
09:14 AM {HD}: Too bad he didn’t upload his version
09:14 AM gloops: might be more on the forums, i use emc2 g64 - you can set g64 easy enough anyway
09:18 AM {HD}: I am going to try mach3gb-arcs[inch]
09:18 AM {HD}: I don’t know what gb stands for...hopefully not “great boom!”
09:19 AM gloops: what are you cutting?
09:22 AM {HD}: I am just making squares and circles in wood to calibrate the machine.
09:51 AM fdarling: does anyone have experience with creating their own Mesa Electronics Anything-IO daughterboards? In other words, use the 26-pin or 50-pin connector and break it out into custom connectors rather than using one of their off-the-shelf boards with screw terminals?
09:56 AM JT-Shop: yea, pcw does
10:04 AM tiwake: hmm
10:05 AM tiwake: after the 7i77, what should I look at for servo drivers?
10:07 AM diverdude: hi, im running my steppermotors using accelstepper. It seems that I have to set a final position using .move() or .moveTo(). Does anybody know if its possible to just set a direction, a speed and an accelleration and no end point and just run the engines?
10:16 AM gloops: any luck {HD}
10:21 AM {HD}: gloops: well it seemed to run alright. The circle was a odd combination of arcs and flats but it was fast enough.
10:22 AM gloops: hmm, will keep you going then - you mean there are flats on the circle though?
10:51 AM fdarling: diverdude: it is not possible with that library, I just read the documentation. I have actually tried using it for a project before, but ultimately wrote my own stepper motor code based off interrupts
10:51 AM diverdude: fdarling: ok - why did you opt to write your own?
10:51 AM fdarling: diverdude: what you want to look into is something called DDS -- direct digital synthesis -- it can be used to generated square waves of varying frequency, and that vary frequency over time particularly
10:52 AM fdarling: diverdude: you can make a square wave ramp up from 0Hz to 200Hz for example, and stay there. It turns out that DDS is trivial when generating square waves, because you don't really need a wavetable
10:55 AM fdarling: diverdude: (if DDS is confusing, I can explain it to a degree)
10:56 AM fdarling: diverdude: I own many Mesa cards and use them, but in this particular case I am retrofitting a Fanuc based 1998 Mori Seiki F-M1 and the Fanuc controller ("brain") is meant to work with it's proprietary sister modules that need not only weird connectors, but weird amounts of RS-422 signals and PWM and such
10:56 AM fdarling: diverdude: so I could buy multiple Mesa cards and only use parts of each, or I could roll my own that was more suited for the job
10:58 AM fdarling: diverdude: like I need 12x differential PWM outputs, 8x differential analog inputs, at least 4x differential inputs and another 4x outputs for serial communication with the Fanuc proprietary encoders...
10:59 AM fdarling: pcw has said before in the forums that he would like to create a daughterboard for this, but doesn't have the time. I have the time, but I need some help getting started on it since I can't find any schematics for the off-the-shelf Mesa boards
11:00 AM fdarling: hmm, I think I may have misunderstood diverdude... I thought he was asking about making my own card, not about writing my own stepper code, LOL
11:00 AM fdarling: I must be pretty tired
11:01 AM fdarling: gloops: I only caught a portion, but you said something about a circle being realized as arcs and lines? Is this when being cut, or is that actually in the G-code?
11:02 AM gloops: <{HD}> gloops: well it seemed to run alright. The circle was a odd combination of arcs and flats but it was fast enough.
11:02 AM fdarling: I ask because I've run into issues with converting 2D CAD files too many times and degrading circles into splines into circles again and ending up with really ugly toolpaths (if you peek at the G-code)
11:03 AM tiwake: anyone happen to know if the drillbits at maritool are cobalt?
11:04 AM JT-Shop: tiwake: I get my carbide tooling from lakeshore carbide and get my tooling from maritool
11:05 AM JT-Shop: tooling/holders even
11:05 AM tiwake: JT-Shop: well, I just got a 4" shellmill from maritool, but they didn't have any R8 arbors
11:05 AM tiwake: so I got one from MSC
11:06 AM JT-Shop: my R8 tooling is crap mostly lol
11:06 AM tiwake: but I need a set of drillbits, was considering the maritool ones but it does not say anything about them being cobalt
11:07 AM tiwake: honestly I only want cobalt drill bits
11:07 AM fdarling: I don't know, but I'd imagine that if they don't specify, they aren't cobalt but just normal HSS
11:07 AM tiwake: yeah
11:07 AM tiwake: in general anyway
11:08 AM tiwake: cobalt is technically a highspeed steel though, and once or twice in the past I've seen "HSS" when it was actually cobalt
11:11 AM fdarling: tiwake: I read that cobalt tooling has the gold-ish color because of the baking process it goes through or something. I know I have cobalt Hanita roughing end mills that are *not* gold, they are normal silver looking, so I guess I could see where "HSS" and cobalt tooling might not technically be that different
11:12 AM tiwake: I'll just email them
11:12 AM tiwake: heh
11:12 AM fdarling: but the cobalt you're referring too I'd imagine would be the stuff that was clearly a different color like gold/yellow (but not due to an intentional coating) and also not black oxide nor plain silver
11:12 AM tiwake: hmm, I'm not sure if I've ever seen black oxide coated cobalt drills
11:13 AM tiwake: ah, their parabolic drills are cobalt it seems
11:14 AM tiwake: parabolic is badass, but expensive... lol
11:14 AM tiwake: donno why
11:14 AM tiwake: oh, morse manufactures them, not maritool
11:14 AM tiwake: enh
11:15 AM tiwake: JT-Shop: you have a favorite place to get good cobalt drill bits?
11:15 AM fdarling: no I meant that some HSS is black-oxide coated, I associate it with really cheap and crappy drills, not sure if that's inherent or not though
11:16 AM tiwake: enh
11:17 AM JT-Shop: I get my drills from MSC, name brand drills only
11:17 AM fdarling: tiwake: I actually get my cobalt drill bit index from Harbor Freight (they work well enough) and when my coworkers abuse or lose them, I replace them with ones off McMaster-Carr for ~$2 each (depends on the size)
11:17 AM tiwake: I've had some reallllly crap bright finish drills, and black-oxide ones being higher quality in general
11:17 AM JT-Shop: it's cheaper to drill the right size hole with a good bit than use a crap bit
11:17 AM fdarling: tiwake: my favorite drills for aluminum are parabolic flute ones, and I get YG-1 (Korean) brands ones off eBay from Suncoast Precision
11:18 AM tiwake: well sure, thats why parabolic drills exist
11:18 AM tiwake: hmm
11:18 AM fdarling: I do a lot of plastic machining too where the issue isn't the tool wearing or breaking, it's avoiding friction welding the plastic
11:19 AM tiwake: fdarling: you would like sear geometry tooling then
11:19 AM tiwake: *shear
11:20 AM tiwake: fdarling: http://www.robertsonprecision.com/19.html
11:20 AM tiwake: the best I've seen for soft materials
11:20 AM tiwake: used it soooo much with all the copper crap I've made over the years
11:21 AM tiwake: but also in plastics, aluminum and such
11:21 AM fdarling: tiwake: that link seemed to be for a turning tool, do they make "Shear geometry" tooling in the way of drill bits and end mills?
11:22 AM tiwake: they make the inserts... I think they might make a shellmill
11:22 AM tiwake: or similar
11:23 AM tiwake: hmm, no
11:23 AM tiwake: its possible its a standard size insert though... *shrug*
11:23 AM tiwake: APGX it seems
11:24 AM tiwake: looks like its turning only
11:26 AM tiwake: could email and ask
11:29 AM gregcnc: Aren't all aluminum tools high positive?
11:29 AM tiwake: sure, just have not seen any as effective as shear geometry though
11:30 AM tiwake: as far as insert turning tools go
11:30 AM gregcnc: https://abtoolsinc.com/prod/shear-hogs/
11:30 AM gregcnc: ho do they perform differntly than common aluminum inserts?
11:32 AM tiwake: don't remember really, its been a long time since I could compare anything
11:32 AM tiwake: 8+ years
11:36 AM tiwake: gregcnc: nice link though! I might have to get some of that tooling
11:36 AM gregcnc: some people really like them, I haven't used those
11:38 AM gregcnc: APGX suggest a milling insert, which does look quite similar
12:29 PM skunkworks: wow - the new oiler pumps up to 100+psi
12:41 PM {HD}: The gcode was a combination of flats and arcs. The result was seemingly a perfect circle. ^^^
12:56 PM tiwake: crap
12:56 PM tiwake: I need a good drill bit sharpener too
01:05 PM gloops: lol
01:08 PM gloops: presto and dormer make good drill bits, dunno if you get them over there
01:09 PM gloops: even old sets off ebay sharpen up very well
01:21 PM tiwake: don't have a sharpener
01:21 PM tiwake: darex is fantastic, but I can't spend that much on a drill sharpener
01:24 PM gloops: oh plenty of easy to make jigs on youtube
01:24 PM gloops: its not zero tolerance thing
01:35 PM tiwake: ..?
01:45 PM gloops: you could make one
01:48 PM tiwake: gloops: make one what?
01:52 PM gloops: a drill bit sharpening jig
01:52 PM diverdude: Hi. When I am homing, I am asking my 2 motors to go 1 million steps in negative direction, and then i am calling this function on every iteration of the loop: http://paste.ubuntu.com/p/zShPy72KCM/ When it reaches limit switch it backs up until release and then sets position to 0. Works very nicely. What I do not understand is that if i have line 15 disabled as shown, the motor does not stop. It just continues a while and then stops. Why is line 15
01:52 PM diverdude: so important?
01:53 PM diverdude: Sorry, correction - it stops and then continues in same direction - instead of stopping and changing direction
01:58 PM tiwake: gloops: how?
01:58 PM gloops: i thought you had a mill and a lathe tiwake?
01:58 PM tiwake: at work, not at home
01:58 PM gloops: grinding wheel of some description
01:59 PM gloops: the if operation diverdude?
02:00 PM diverdude: gloops: no its not the if - that one is fine
02:00 PM diverdude: gloops: its something to do with accelstepper
02:00 PM diverdude: gloops: if i do not set current posistion to 0 it wants to continue and deacellerate before stopping... but i just want it to halt immedietly
02:47 PM {HD}: Er11 collets are fiddlie little things.
03:00 PM diverdude: hi - anybody has an idea why this very simple arduino stepper motor program does not work? http://paste.ubuntu.com/p/bcwTSb5q5F/
03:09 PM jdh:
03:10 PM jdh: no
03:10 PM XXCoder: diverdude: does it require enable command of some kind?
03:11 PM {HD}: Do you buy metric and inch collets or do you just use the closest that you have?
03:11 PM diverdude: XXCoder: i dont think so - because if i call .run() instead it works ok....but it ramps - and i dont want that which is why i want to use .runSpeed()
03:11 PM XXCoder: {HD}: in many cases "closest" is fine, but there is gaps where youwill need specific size, so recommand both
03:12 PM XXCoder: ok, diver. sorry out of idea lol
03:13 PM {HD}: How much do you feel comfortable squishing a collet?
03:13 PM XXCoder: basically I do this..
03:13 PM XXCoder: if tool cant move under simple handheld collet, its fine
03:13 PM XXCoder: otherwise nope
03:14 PM XXCoder: ie use your hand to fairly lightly hold collet and try move tool in it. if it cant its close enough
03:14 PM {HD}: So no collet nut. You put the tool in collet and pinch it?
03:14 PM XXCoder: not very hard you'll get it by testing
03:15 PM {HD}: I will give it a shot. I have metric collets but a 1/4” tool.
03:15 PM {HD}: I think 6.5 feels close but I will double check.
03:15 PM XXCoder: its 6.35mm
03:16 PM XXCoder: its one of those sizes that you might want inches
03:16 PM JT-Shop: what ever collet you choose don't stuff the tool in and swell it out...
03:16 PM {HD}: Doh!
03:16 PM JT-Shop: a 1/4" tool fits in a 7mm collet not a 6mm
03:16 PM * JT-Shop wanders off to town see everyone in the morning
03:16 PM XXCoder: hey JT-Shop
03:17 PM JT-Shop: hey XXCoder
03:17 PM JT-Shop: see you in the morning!
03:17 PM XXCoder: later :) have fun at town
03:18 PM {HD}: JT-Shop: I can wiggle my 1/4” in the 6.5 collet.
03:18 PM XXCoder: {HD}: lightly pinch it
03:19 PM XXCoder: see if tool can move
03:19 PM {HD}: XXCoder: i can still move it with a decent pinch
03:20 PM XXCoder: not too sure but think thats bit much
03:20 PM {HD}: Well crap. Guess I need an inch set for my er11 & er20...
03:21 PM XXCoder: 6mm is too small you dont want collet to expand too much, or it wont fit er nut
03:21 PM XXCoder: maybe not all of em, just awkward sizes like 1/4
03:23 PM {HD}: XXCoder: I didn’t even try the 6mm I figured 6.35>6
03:23 PM {HD}: Buy a collet or switch to all metric tooling... hum...
03:24 PM {HD}: Haha
03:27 PM XXCoder: im sure most tools could be meteric just some is convient in inches im sure
03:27 PM XXCoder: *more
03:28 PM XXCoder: shop I work at is 99% inches. we use very few metric tools
03:37 PM {HD}: If I am going to buy a one I might as well buy the set.
03:37 PM {HD}: Now to find how many in a set
03:38 PM XXCoder: I think I remember seeing sets that had all metric and one 1/4 lol
03:38 PM XXCoder: its hell of an inconvient size if you use metric lol
03:49 PM {HD}: Wow r/linuxcnc is a ghost town!
03:51 PM gloops: ye there are a few ghosts here
03:52 PM {HD}: 282days since last post
03:52 PM XXCoder: fun
03:52 PM {HD}: I just subbed just in case
04:03 PM Deejay: re
04:18 PM gloops: its strange ichs disappearance coincided with having to register on freenode
04:20 PM {HD}: Whos ichs? And where did they disappear to?
04:20 PM {HD}: I need a good video explaining feeds and speeds. Any recommendations?
04:22 PM XXCoder: gloops: nah ich stayed for few months more
04:23 PM XXCoder: then probabky died
04:24 PM gloops: oh i see
04:25 PM {HD}: Died? Yikes.
04:25 PM gloops: ichs was a bit of a linuxcnc legend HD, he would have schooled you in every aspect of cnc
04:26 PM gloops: also had a very useful youtube channel hundreds of help vids he made, he came in here all the time very eager to help newbs
04:26 PM XXCoder: those videos is gone
04:26 PM XXCoder: I couldnt watch em but heard it helped so many people, those videos.
04:27 PM gloops: yes that is a great shame, many many hours he spent on those
04:27 PM gloops: i a;ways checked his channel first for a tutorial
04:27 PM {HD}: XXCoder: what? Where did the videos go?
04:27 PM XXCoder: his supposely grandson deleted em all
04:27 PM {HD}: Wow
04:27 PM XXCoder: we asked if can restore em he said maybe. guess it wont happen
04:27 PM gloops: id want them to stay if that was my grandad
04:28 PM XXCoder: indeed
04:28 PM gloops: although maybe took some managing he got hundreds of emails every day
04:28 PM XXCoder: guy was real busy all time. always building cnc machines
04:29 PM {HD}: I vaguely remember the name. I will have to grep the logs. I have been in and out of this channel for the last 5 years more.
04:30 PM gloops: what are you cutting HD? wood, aluminium?
04:30 PM {HD}: That just goes to show you to archive everything ‘you’ find important and not rely on it being there in the future.
04:31 PM gloops: thats true
04:32 PM {HD}: gloops: whatever needs to be cut. I milled some teflon spouts for some local scientist recently. That was fun.
04:32 PM Glorfindel: {HD}: yup, I keep lots of stuff around
04:32 PM Glorfindel: "just in case"
04:33 PM gloops: i havent found aluminium s/f calculator useful for my router
04:33 PM gloops: a lot depends on the machine
04:35 PM XXCoder: play by ear
04:36 PM gloops: i meant to make a test script up, varying speed feed depth combos
04:36 PM gloops: but yeah some trial cutting required
04:37 PM gloops: these high speed ally cutting theories might work in *ideal* conditions
04:40 PM gloops: https://www.ns-tool.com/en/technology/technical_data/cutting_speed/
04:45 PM {HD}: How do you calculate ideal chip load?
04:45 PM {HD}: Or is that a constant provided by tool mfg?
04:45 PM gregcnc: usually tool mfg has some figure
04:45 PM XXCoder: sometimes recommanded dont really work well
04:45 PM XXCoder: but most times its fine
04:46 PM XXCoder: for example some machines cant move that fast, or cant bear up to sideload, etc
04:47 PM gloops: https://www.cncroutershop.com/us_en/calculate-feeds
04:47 PM gloops: Typical Chip Load Values for Various Size Cutters
04:47 PM gloops: you wont need this for wood, after a while youll get a feel for it
04:48 PM {HD}: I am trying to hit maximum!
04:48 PM gloops: i had real doubts a 3mm cutter could hack boards up quickly - they can
04:48 PM {HD}: I am already comfortable just tweaking until it seems right.
04:48 PM gloops: what is the maximum feed here?
04:51 PM gregcnc: I can only do a double cheeseburger and fry before giving up
04:52 PM XXCoder: heh some tools is overkill, expecially on weak woods like pine
04:52 PM gloops: https://www.ebay.co.uk/itm/5pc-3-175X22mm-Down-Cut-Cutter-Left-handed-1-Flute-End-Mill-Carbide-Cutting-Tool-/232780206023?
04:52 PM XXCoder: my spindle turned off while it was cutting wood, and tool didnt break
04:52 PM XXCoder: it just went though wood, and not spinning
04:52 PM gloops: these work fine for all wood, single flute, ive only broken 1 and that was smashing into ally
04:52 PM XXCoder: 1/16 carbide ball endmill
04:53 PM gloops: my max speed is only 150ipm ish though, which ill hopefully correct soon
04:56 PM {HD}: gloops: why LH?
04:57 PM SpeedEvil: https://www.youtube.com/watch?v=v6lus-PXS4k - Oroville dam repaired - hugely massive amount of work.
04:57 PM SpeedEvil: 12 million pounds of rebar
04:59 PM gloops: {HD} its a downcut spiral
05:00 PM gloops: pushes material down
05:01 PM gloops: with some wood jobs you want a clean edge on the top/surface, downcut wont tear material up at the surface
05:01 PM gloops: you can get upcut, or compression (up and down cutting)
05:03 PM SpeedEvil: I wonder if expansion bits exist
05:03 PM {HD}: Haha neat
05:03 PM gloops: you might also want to consider climb or conventional strategy
05:04 PM SpeedEvil: gloops: that isn't always enough.
05:04 PM SpeedEvil: err - nvm
05:04 PM gloops: it is for wood
05:04 PM SpeedEvil: misread
05:04 PM gloops: the strategy is basically - put cutter in - give it some stick
05:06 PM XXCoder: lion air jet crashed into sea only 2 months old
05:06 PM XXCoder: cant blame that on poor maintance record
05:06 PM gloops: https://www.ebay.co.uk/itm/5PCS-3-175x22mm-UP-DOWN-Cut-Two-Flutes-Spiral-Carbide-Mill-Tool-Cutters-for-CNC-/232780205875?
05:07 PM XXCoder: so many bingo words there. high quality, imported
05:07 PM gloops: obviously you cant have a single flute UP DOWN cutter
05:07 PM XXCoder: if it also had "total qualty" or "totally" I'd have won bingo
05:08 PM gloops: the chinese know the online selling game, average attention to the ads is about 15 seconds
05:08 PM gloops: get the key words in
05:09 PM XXCoder: why do they add so many irrevelant words then?> lol
05:09 PM XXCoder: I saw 3d printer that had "3d print mill router laser camera kitchen sink"
05:09 PM XXCoder: fine last 2 wasnt really there but I wouldnt be surpised if it was.
05:09 PM gloops: cuts everything, lasts forever, unbreakable
05:10 PM gloops: just in case you had any doubts
05:10 PM Deejay: gn8
05:11 PM XXCoder: https://www.aliexpress.com/item/Open-MiniMill-CNC-Mechanical-Kit-3-Axis-Desktop-CNC-Mini-Mill/32861773289.html OMG! accurate title! Open MiniMill CNC Mechanical Kit 3 Axis Desktop CNC Mini Mill
05:11 PM XXCoder: price isnt bad
05:12 PM XXCoder: its little more than toy but machine toy price also
05:12 PM gloops: hmm, v wheels
05:13 PM gloops: that eliminates cost of linear rails
05:14 PM XXCoder: LOL https://www.aliexpress.com/item/Small-Cylindrical-Laser-Engraving-Machine-Can-Engrave-Cylindrical-Stainless-Steel-Automatic-DIY-Cutting-Plotter-CNC-Router/32900589141.html
05:14 PM XXCoder: thats new.
05:14 PM gregcnc: I need a press....https://youtu.be/DLxw6x9lTwM
05:15 PM XXCoder: did you know theres one design that you can build but cannot unbuild without breaking a part?
05:16 PM gloops: rotating between rollers, you know engraved glasses are popular with weddings and stuff now
05:16 PM gregcnc: have not seen that
05:16 PM XXCoder: gloops: yeah pretty awesome
05:16 PM XXCoder: though I would enclose the crap out of that machibe
05:17 PM gloops: would need to be slightly faster if getting orders for 300 glasses though
05:17 PM gregcnc: 300 machines?
05:18 PM gloops: but whos to say you couldnt make some cash doing odd few for birthdays, anniversaries etc, gifts
05:18 PM XXCoder: 10 would do. just 30 runs
05:18 PM gloops: dogs name
05:18 PM gloops: jeb
05:23 PM XXCoder: gregcnc: sdly cant find example of it now
05:24 PM gregcnc: if you run into it one day
05:24 PM XXCoder: its pretty easy to make really lol
05:25 PM XXCoder: once you slide in final axis 2 it becomes impossible to unbuild
05:30 PM XXCoder: gregcnc: lol variant of it https://2.bp.blogspot.com/_MBEVlUMi9kI/SmG3hziXyCI/AAAAAAAABkc/esCOaRF7jVE/Dice+%231.jpg
06:49 PM jthornton: whew ate too much mexican food...
07:24 PM Tom_L: :)
07:39 PM XXCoder: power your car with gas ;)
08:37 PM flyback: bmcc
08:43 PM * evilroot is BACK!
08:50 PM {HD}: Doesn’t down cutters pack the chips in the slot?
08:50 PM flyback: evilCANUCK
08:50 PM flyback: evilCANUCK
10:15 PM XXCoder: man.
10:16 PM XXCoder: bad obession motorsport alternator location is insane
10:25 PM evilroot: Oh?
10:46 PM XXCoder: yeah
10:46 PM XXCoder: its on other side, connected by flex shift
10:46 PM XXCoder: no room on that side for alt
10:46 PM MarcelineVQ: Imagining servicing this thing
10:47 PM XXCoder: its unique thats for sure
10:47 PM XXCoder: https://www.youtube.com/watch?v=7hCPODjJO7s first one if youre curious
10:47 PM XXCoder: warning: addictive
10:47 PM MarcelineVQ: I missed the last couple but have seen the others :> In a similar boat actually, the welder in our truck just started spewing oil and I suspect I'll have to cut it out just to get a look at it
10:48 PM XXCoder: man! havent seen car in orginial condition for long while
10:49 PM norias: i need to learn more welding
10:50 PM MarcelineVQ: It's a lot of fun if you can afford it
10:50 PM norias: yeah
10:51 PM norias: i just do it at work, for now
10:52 PM norias: i'm thinking about getting a cheapo 120 stick welder for stuff at home
10:52 PM Tom_L: pretty limiting
10:53 PM norias: aye, but cheap
10:53 PM MarcelineVQ: I've used 120 wirefeeds but dunno how much fun a 120 stick would be
10:53 PM norias: i've never
10:53 PM norias: next on the list is hobart handler 190
10:53 PM Tom_L: i got a 220v wirefeed and it's nice
10:53 PM norias: it's uh... 220V single phase
10:53 PM Tom_L: used to have a gas stick welder
10:53 PM norias: the hobart is a mig
10:54 PM norias: but you can get a spool gun for doing aluminum for that one
11:01 PM evilroot: I only ever learned to stick weld, arc
11:01 PM Tom_L: same
11:01 PM Tom_L: but i have a mig now
11:01 PM Tom_L: did a little gas welding
11:01 PM evilroot: If you can handle a high current stick welder you can pretty much handle anything else
11:02 PM evilroot: Easy in comparison
11:02 PM evilroot: Kind of like soldering really
11:04 PM evilroot: When you learn the old school way and spend hundreds of hours getting it perfect using modern stuff makes you wonder why you bothered, it makes it so easy!
11:05 PM evilroot: And then you see people failing horribly using the modern stuff and realize its because they never developed the underlying skill
11:26 PM hazzy1 is now known as hazzy