#linuxcnc Logs
Nov 18 2021
#linuxcnc Calendar
01:45 AM Deejay: moin
02:00 AM randy: morning
02:26 AM Centurion_Dan1 is now known as Centurion_Dan
03:24 AM Centurion_Dan1 is now known as Centurion_Dan
04:16 AM Tom_L: morning
04:18 AM Tom_L: 30F hi 53
05:16 AM JT-Cave: morning
05:17 AM XXCoder: https://www.youtube.com/watch?v=9peACH52KTo
05:17 AM XXCoder: new prusa printer, XL
06:26 AM JT-Cave: looks like a decent printer
06:26 AM XXCoder: yeah expensive tho
06:26 AM XXCoder: blog https://blog.prusaprinters.org/original-prusa-xl-first-look_58312/
06:26 AM XXCoder: store https://www.prusa3d.com/product/original-prusa-xl-2/
06:27 AM XXCoder: prices is kinda broken
06:27 AM JT-Cave: hows that?
06:29 AM XXCoder: oh thy fixed it
06:30 AM XXCoder: semi-assembled was more money than assembled lol
06:30 AM JT-Cave: semi $1,999 fully $2,499
06:30 AM XXCoder: yeah thats for one toolhead
06:31 AM JT-Cave: 1 print head
06:31 AM XXCoder: 5 is 3500/4000
06:31 AM JT-Cave: so it's 500 for fully on all three options
06:33 AM XXCoder: yeah
06:33 AM XXCoder: and roughly 500 usd per toolhead
06:37 AM JT-Cave: so I'm not seeing what's broken about the prices...
06:37 AM XXCoder: like i said it got fixed :)
06:37 AM JT-Cave: oh missed that
06:38 AM XXCoder: no plm
06:38 AM JT-Cave: hmm seems we had an earthquake last night...
06:42 AM Tom_L: 4.0 pretty close to you too
06:44 AM JT-Cave: https://www.volcanodiscovery.com/earthquakes/quake-info/6498516/quake-felt-Nov-18-2021-Near-Poplar-Bluff-Missouri-USA.html
06:50 AM Tom_L: https://earthquake.usgs.gov/earthquakes/map/?extent=30.78904,-101.77734&extent=42.01665,-84.88037&listOnlyShown=true
06:53 AM JT-Cave: that's not far from my house, if you zoom in on that map I'm on the east side of the highway near that small lake
06:53 AM JT-Cave: wow that map even has the road names correct
06:54 AM Tom_L: heh
06:54 AM JT-Cave: if you zoom in enough to see the road names I'm on rugby
06:56 AM Tom_L: anything fall off the wall?
06:59 AM Tom_L: you _are_ down a dead end road down a dead end road :)
07:02 AM JT-Cave: nope
07:09 AM JT-Cave: ok wife is up and she felt it big time and even went outside to check
07:14 AM Tom_L: we haven't had one in a while
07:14 AM Tom_L: pretty sure ours were due to fracking
07:14 AM Tom_L: down in Ok
07:46 AM Tom_L: halui.mdi-command-XX <= halui.program.is-paused
07:46 AM Tom_L: do you think that would execute the subrouine called in the mdi command?
07:52 AM JT-Cave: I don't think that would work <= does nothing in hal
11:34 AM skunkworks: https://www.mouser.com/ProductDetail/API-Delevan/11BRW-300-B10?qs=LLUE9lz1YbfkRsk3%252BW7K6w%3D%3D
11:34 AM skunkworks: these resolvers ore on mouser still...
11:34 AM skunkworks: are
11:38 AM skunkworks: we have atleast 12 of them.
11:38 AM skunkworks: 250hz though...
11:47 AM roguish[m]: JT-Cave: hey, we had 2 little quakes here yesterday. 2.6 and 3.8 about 10 miles south
11:48 AM roguish[m]: https://earthquake.usgs.gov/earthquakes/map/?extent=16.72039,-135.57129&extent=55.10352,-54.4043
12:13 PM roycroft: we haven't had any earthquakes in a while
12:14 PM roycroft: most of ours are offshore, and rarely above magnitude 5, but we usually get them fairly regularly
12:26 PM roguish[m]: roycroft: have you ever been down to Eureka? wondering what it's like. place to retire????
12:28 PM roycroft: I've been to Arcata many, many times
12:28 PM roycroft: Eureka is just south of there
12:29 PM roycroft: I've considered moving down there, and I think it would be a great place to live
12:29 PM roycroft: It's rather cool and foggy most of the time, but if you ever need some sunshine, just head east and drive for 20 minutes
12:39 PM roycroft: Blue Lake is a nice little town just inland from Arcata, and it's quite a bit sunnier and warmer there than in Arcata or Eureka
01:00 PM perry_j1987: do job shops have some sort of mfg agreement they sign with their customers before they are sent cad files or drawings and such?
01:02 PM JT-Shop: sometimes
01:03 PM Rhine_Labs: On me electronics side almost all request i sign an NDA beofr i get the files.
01:12 PM roycroft: I've signed so many NDAs I can't even begin to estimate how many
01:24 PM Tom_L: JT-Shop, i know the => does nothing but those are both valid. one is input and one is output
01:25 PM JT-Shop: do you want it to execute every scan?
01:25 PM Tom_L: i want it to execute when the pause button is pushed
01:25 PM Tom_L: we were discussing that yesterday
01:26 PM Tom_L: a way to pause mid program and retract the spindle then resume after the resume button was pushed
01:26 PM JT-Shop: might be better to use classic ladder to have a rising edge contact
01:26 PM Tom_L: i use rising edge on my pause button
01:26 PM Tom_L: or edge at least
01:27 PM Tom_L: this is for someone else that doesn't think it can be done
01:27 PM JT-Shop: I don't think you can do any moves while a running program is paused...
01:27 PM Tom_L: and he may be right
01:27 PM Tom_L: i'm wondering about that too
01:27 PM Tom_L: however i didn't violate any rules
01:27 PM JT-Shop: it could be a valid hal line...
01:28 PM JT-Shop: you can test in a sim
01:28 PM Tom_L: then the mdi-command would execute a sub to retract his spindle etc
01:28 PM Tom_L: using G30 to return
01:29 PM Tom_L: after turning the spindle etc back on
01:31 PM Tom_L: G30.1
01:31 PM Tom_L: M05
01:31 PM Tom_L: G53 G00 Z0
01:31 PM Tom_L: M00
01:31 PM Tom_L: M03
01:31 PM Tom_L: G30 Z
01:31 PM Tom_L: something like that would go in the sub
01:32 PM Tom_L: he was just trying to figure out a way to retract the spindle on a router when it was paused
01:32 PM Tom_L: built ~4yrs back at the time he said it couldn't be done
01:33 PM JT-Shop: I think you have to use http://linuxcnc.org/docs/2.8/html/config/moveoff.html
01:35 PM Tom_L: that might leave the spindle on though
01:36 PM * JT-Shop gets back to work...
01:36 PM Tom_L: i'll look it over
01:40 PM roycroft: AliExpress just sent me delivery confirmationon that light stack again
01:41 PM roycroft: I already initiated a chargeback - I'm glad I did, because AliExpress don't seem to be capable of understanding that I have returned the item and expect a refund
01:41 PM roycroft: They just keep sending me confirmations that they delivered it to me
01:41 PM roycroft: What a nightmare it is dealing with those people
01:52 PM serp: I have had good experiences with refunds from aliexpress
02:09 PM miss0r: messing around with this coilgun design of mine... I need a better way of killing the induction from the coil.. It keeps blowing up my diodes... :-/
02:10 PM Tom_L: get bigger ones
02:10 PM miss0r: This *should* be able to handle 200A peak at 650 volts
02:11 PM miss0r: but it just works once.. Next round it makes a nice sparkle show
02:11 PM miss0r: Tom_L: https://docs.rs-online.com/1a78/0900766b81396eb4.pdf
02:12 PM Tom_L: those legs won't handle 200A for very long :)
02:12 PM miss0r: nope :) and it shouldn't need to.
02:13 PM Tom_L: why you messin with a rail gun anyway?
02:13 PM miss0r: I'm not :) Its a coil gun
02:14 PM miss0r: I made one 20 years ago that was REALY powerfull. But I didn't have a machine shop then, so now I'm building an even better one, where the projectile is rotated at 3000rpm prior to launch, to get a better ballistic curve.
02:14 PM miss0r: That is the plan anyway
02:14 PM miss0r: but being a novice like I am, I keep hitting these annoying little problems
02:16 PM solarwind: Is it ok to hoist high pressure welding gas cylinders using a hook and attaching it to their cap?
02:17 PM JT-Shop: the threads on the caps are not so great and often mismatched...
02:18 PM JT-Shop: safer to weld pad eyes on acetylene tanks than hoist by the caps...
02:18 PM JT-Shop: not really both are a bad idea
02:18 PM Tom_L: :)
02:18 PM miss0r: hehe
02:18 PM Tom_L: don't stand under it if you do
02:19 PM Tom_L: it may partially punch a well for you
02:19 PM solarwind: JT-Shop I think that's a great way to banish them forever from certification or circulation
02:19 PM JT-Shop: or in the same building if you break the valve off
02:19 PM solarwind: Mythbusters did a video on that
02:19 PM Tom_L: yeah but it was controlled
02:19 PM miss0r: Tom_L. The biggest one I can get any time soon has a momentary 1.4kA rating... If that doesn't work then.. well fak
02:19 PM Tom_L: somewhat
02:20 PM Tom_L: miss0r, stack em
02:20 PM solarwind: So no choice but to build a little lifting enclosure for it
02:20 PM miss0r: tom_L Hmm.. Yeah. But what in the world is the actual flyback voltage/current of this damn thing :D I have no idea
02:20 PM solarwind: This is a #5 acetylene tank, so it's very heavy
02:20 PM JT-Shop: it would not take much to build a rack for a bottle with a lifting eye
02:20 PM miss0r: and I wouldn't know how to even start calculating it :D
02:21 PM miss0r: solarwind: Get an old-timey cargo net, as used to unload boxes of spices and other stuff from the far east out of the cargo hold of wooden ships. That should be able to support it
02:22 PM miss0r: and you could ear an eye-patch going jarrrr when you lift "the loot"
02:22 PM roycroft: a big electromagnet slapped on the side of the cylinder would be able to lift it safely
02:23 PM roycroft: if you want to keep it vertical, slap two magnets on it, 180 degrees apart from each other, put lifting hooks on them, and put a strap through the lifting hooks
02:23 PM miss0r: roycroft: Or even one of those manual/mecanical lifting magnets. and then add a small chain to the cap for added drop safety
02:23 PM roycroft: i missed the beginning of this, but if were me needing to lift gas cylinders regularly, i'd build a cage to store them in and just lift the whole cage
02:24 PM roycroft: welding lifting tabs to the cylinders - not
02:24 PM roycroft: lifting by the caps - not
02:24 PM miss0r: I just did a google search: Here in denmark you are only allowed to lift gas bottles with a cage like this: https://shop.kosangas.dk/kosangas/webshop-erhverv/loeftebur/c-23/c-1563/p-6142
02:24 PM solarwind: I see now the welding suggestion was a joke
02:24 PM miss0r: that goes for welding gas as well as propane
02:24 PM roycroft: yes, of course it was
02:24 PM roycroft: but i never assume that everyone gets a joke :)
02:25 PM miss0r: sarcasm doesn't translate well on IRC
02:25 PM Tom_L: the ones that don't get it just figure you're an ass
02:26 PM roycroft: the cage to which miss0r linked is pretty much what comes to my mind when i suggest a cage
02:29 PM miss0r: tom_L: I found a 255kA one... :)
02:30 PM miss0r: but that thing is bigger than the SCR I use :D
02:30 PM JT-Shop: a potato gun is easier to make...
02:31 PM Tom_L: more instant gratification too
02:32 PM Tom_L: i still think if you add a little oxy the potatoe would go further
02:32 PM miss0r: yes.. but unlike the potato gun this can not only blow your face off, it can also electricute you... makes for more fun
02:33 PM miss0r: and ideally(at the moment only every other shot) it is soundless when shooting
02:33 PM Tom_L: then you can graduate to those mellon blasters
02:33 PM miss0r: Tom_L: Why not go straight to russia and do the oil drum launches? :)
02:36 PM JT-Shop: and don't forget sawdust cannon's using old water heater with top cut off
02:36 PM miss0r: Indeed
02:37 PM miss0r: you know what else is equally as fun? diy mixing nitroglycerine on top of the washingmachine while it runs
02:40 PM JT-Shop: I've not seen that video lol
02:48 PM miss0r: doing a testshot with three 200A peak diodes in parallel... if I do not report back send ems to 127.0.0.1...
02:50 PM miss0r: bah.
02:50 PM miss0r: One quite shot. one electro boom with the magic blue smoke that comes with it.
02:50 PM miss0r: Those to-220 packages pack a punch
02:51 PM miss0r: I Think I will return to making a 50volt edition with 3-4 stages.
02:51 PM miss0r: I just wanted to mess around with a 450volt setup, as I had the parts floating around anyway
02:52 PM miss0r: but apparently, I have no way to manage the flyback in an orderly fashion
02:59 PM Tom_L: feed the energy back into your prius battery
03:00 PM miss0r: hehe I that case I would have it running like a proper car in no time
03:00 PM Tom_L: i bet it might even spin the tires on that one
03:00 PM miss0r: (not realy owning a prius) :)
03:01 PM miss0r: I just decided to stop peing retarted.. I have a bucket full of old SCR units, I will just keep one powered reversed over the coil during the fiting. That ought to handle the current
03:02 PM miss0r: 11kA <8.4ms
03:02 PM miss0r: That would work.. :D
03:03 PM Tom_L: feed it thru a string of christmas lights and count how many are left when it fires
03:03 PM roycroft: If I could figure out a way to capture that blue smoke, package it up, and sell it to folks to reinject in their devices, I would make a fortune
03:05 PM miss0r: roycroft: A land rover parts seller of mine has a shelf in his store, on which theres a a row on what looks like old jelly jars. On them is a realy good looking label, proclaiming that is it Lucas wireloom smoke. Holds enough to reinject the smoke into the wireloom three times before a new glass jar is needed :)
03:05 PM miss0r: I guess the jars are just sand blasted on the inside, but it realy looks like smoke in there
03:06 PM miss0r: lol, here it is: https://m.facebook.com/EngineLabs/photos/a.501487143201513/4142381665778691/?type=3&source=48
03:30 PM miss0r: okay.. The SCR worked nicely as a flyback diode. It has not handled 10+ shots without a catastrophic faliure. But a new problem has presented itself :) Now the magnetic field is active for so long that the projectile does not even leave the barrel... *sigh*
03:31 PM CaptHindsight[m]: https://moveit.ros.org/ came up on the ML for motion planning
03:31 PM CaptHindsight[m]: can it be used for CAM?
03:32 PM CaptHindsight[m]: is it accurate enough? Does it understand material removal or addition?
03:34 PM roycroft: oh, man
03:34 PM roycroft: i have a hard decision to make right now
03:34 PM roycroft: i've been wanting a bigger rotex sander for years
03:34 PM roycroft: they are almost *never* on the festool recon site
03:34 PM roycroft: but a rotex 125 is there right now, and it will be gone in minutes at most
03:34 PM roycroft: i really want a 150, but i might be able to live with a 125
03:35 PM roycroft: i already have a 90mm rotex, so the 125 would be an odd size for me - too close to what i have
03:40 PM CaptHindsight[m]: was similar the other day, Bran Flakes or Raisin Bran
03:40 PM CaptHindsight[m]: se we got both
03:40 PM roycroft: yeah, but that's a $4 choice
03:40 PM CaptHindsight[m]: se/so
03:40 PM roycroft: I think I'll hold out for the RO-150
03:41 PM CaptHindsight[m]: Cheerios is another story, too many options
03:41 PM roycroft: If I drop $400+ right now on this and the one I want shows up soon I'll be sad
03:49 PM roycroft: oatios is what we used to get
03:49 PM roycroft: generic branded, organic versions of cheerios
03:53 PM * roycroft hasn't had breakfast cereal in the house in many, many years, but also has not had kids in the house in many, many years
03:53 PM unterhaus_: my wife likes a particular kind of cereal and they make two varieties. Of course I bought the wrong kind last time
03:53 PM unterhaus_: she ate it, I probably wouldnt
03:55 PM CaptHindsight[m]: Moms Best, ShurFine, Malto-o-Meal also make the kncokoffs
03:56 PM roycroft: usually, when i have breakfast at all, it's a cup of yogurt
03:56 PM roycroft: since i've been dieting i've mostly been skipping breakfast though
03:58 PM CaptHindsight[m]: I want Asian inspired cheerio flavors or maybe something spicy for Thanksgiving besides cinnamon
03:59 PM miss0r: bleh!! I am stumped! It turns out that the SCR did experience a catastrophic faliure... 11kA is not enough
04:00 PM miss0r: the reason the projectile didn't go anywhere is because the SCR is clamped shot in both directions now, a complete meltdown
04:00 PM CaptHindsight[m]: but if MoveIt can motion plan precisely enough there is our basis for open source 5+ axis CAM
04:00 PM CaptHindsight[m]: but me has a feeling that it is not precise enough because robots are not precise* enough
04:00 PM CaptHindsight[m]: *most robots
04:05 PM roycroft: they are as precise as they're made to be
04:06 PM CaptHindsight[m]: Building more complex applications with MoveIt often requires developers to dig into MoveIt’s C++ API. As an added plus, using the C++ API directly skips many of the ROS Service/Action layers resulting in significantly faster performance.
04:10 PM CaptHindsight[m]: like cereals
04:10 PM CaptHindsight[m]: miss0r: did you get your pulse generator delayer thingy working?
04:17 PM miss0r: CaptHindsight[m]: Still waiting for the parts. It is working in theory. At the moment I am struggeling with the more basic stuff. Like how to have a flyback diode survive in a close to 0 ohm coil inductance circute
04:17 PM CaptHindsight[m]: oh use an infinite current diode :)
04:18 PM miss0r: at this point I am a little bit at a loss :) I just wrecked a SCR rigged to do the job. and it is supposed to be able to survive 11Ka in a <8.4ms pulse
04:18 PM miss0r: indeed. That is what I need
04:19 PM linext__: are there good cnc's under $500 USD?
04:19 PM CaptHindsight[m]: what voltage?
04:19 PM CaptHindsight[m]: linext__: define good please
04:19 PM miss0r: I haven't measured the flyback voltage, but the coil is energized with 450 ish volts
04:19 PM CaptHindsight[m]: what frequency?
04:19 PM * flyback bites miss0r
04:20 PM miss0r: hahaha, I didn't see that comming :D (cheers flyback)
04:20 PM miss0r: CaptHindsight[m]: One pulse..
04:20 PM miss0r: 450VDC
04:21 PM miss0r: CaptHindsight[m]: I'm discharging a 450volt 4700uF cap over a coil that measures 0.081ohms
04:21 PM miss0r: which is roughly 5.5kA.. (estimate)
04:22 PM CaptHindsight[m]: what pulse length?
04:22 PM miss0r: I have no idea about the pulse time, that could be calculated, i'm sure. But it is clearly under 8.4ms, as I am using the same SCR type to close the circuit
04:23 PM CaptHindsight[m]: how long did the SCR last?
04:23 PM miss0r: with no fly-back diode in there, the cap is reverse charged to around 50 volts(reverse polarity) which does not exactly do wonders for the life expectancy
04:23 PM miss0r: CaptHindsight[m]: One pulse.. On the next pulse it was clamped shut.. so maybe 0 pulses ? :)
04:23 PM linext__: able to cut aluminum
04:24 PM miss0r: linext__: Short answer: 'no'. Long answer: 'if you do not expect too much, then yes.. but "good" would be a stretch'
04:24 PM CaptHindsight[m]: linext__: aluminum sheet maybe
04:25 PM CaptHindsight[m]: small footprint like 8 x 8"
04:25 PM miss0r: CaptHindsight[m]: I'm hoping you will be dropping the 'you messed up exactly *here* - This is what you need to do'-bomb on me soon :D
04:25 PM Tom_L: CaptHindsight[m], so it may be ok for guided missles?
04:25 PM CaptHindsight[m]: look for a cnc router made from aluminum 2-4x min. thicker than what you want to cut
04:26 PM CaptHindsight[m]: guided or unguided
04:26 PM Tom_L: unguided just make it 10% more powerful and it will still be effective
04:27 PM miss0r: Tom_L: Have you seen what the industrius little koreans have created? If they can make something even remotely lift off the ground, I think its safe to say you can make a guided missle with a fleabay special 6040
04:28 PM miss0r: as in - you can tie a string to the gauntry and throw it at someone - tighten the string if you are about to overshoote your taget :P
04:32 PM miss0r: CaptHindsight[m]: I'm brewing a theory here. The issue with using an SCR as the switch, is that it will stay latched until the energy source is depleted(in case of DC), This then allows for reverse voltage to somehow leak through before it unlatches (I don't realy understand why, as it is supposed to function as a reftifyer when latched..) Anyway, in the future model, I am planning on using a powerfull mosfet
04:32 PM miss0r: as a switch, and only use 50volt caps. I'm thinking I can just time the mosfet so that the voltage does never drop below 5 volts or so on the cap, disconnecting the circuit before any reverse voltage can even happen.
04:32 PM miss0r: But this is just an electronice novice(at best) talking here
04:34 PM Tom_L: triac
04:35 PM Tom_L: don't they shut down every cycle and need a boost to keep goin?
04:35 PM miss0r: same for the SCR
04:35 PM miss0r: a triac is basically a double SCR configuration, that allows current to flow both directions
04:36 PM miss0r: while the SCR is just an open circuit when un powered, and it *should* as I understand it, turn into a rectifyer once powered
04:36 PM Tom_L: sry, i haven't tried to blow my head off in a while... maybe a bit rusty
04:36 PM miss0r: :D
04:37 PM miss0r: Hey - I've AvE has tought me anything, its to always engage safety squints
04:37 PM Tom_L: have you started flinching when you see a spark?
04:38 PM CaptHindsight[m]: miss0r: maybe, post a schematic but i have to run, guests arriving
04:38 PM miss0r: yup. In my previous life I was an electrician for 10 years doing industrial plants. so yeah
04:38 PM miss0r: CaptHindsight[m]: I might do so tomorrow. Cya
04:38 PM Tom_L: CaptHindsight[m], don't encourage the kid...
04:39 PM miss0r: :]
04:39 PM miss0r: I don't need encouragement. I am already hooked :]
04:40 PM miss0r: The thing is; This model will be running on 50 volts. I am just messing with the 450volt caps for fun while I wait for parts. I just don't like not understanding what is happending and why it keeps dying on me
04:44 PM CaptHindsight[m]: but yeah if they don't switch fast enough you'll have problems like this
04:44 PM CaptHindsight[m]: diodes are often oversimplified when taught
04:44 PM CaptHindsight[m]: they take some time to turn on and off
04:44 PM CaptHindsight[m]: like the difference between and Bachelors and Masters in Sociology :)
04:44 PM CaptHindsight[m]: or certified master auto tech and shade tree certified boat overhauler 2nd class
04:44 PM miss0r: Indeed
04:45 PM miss0r: I think I will just revert back to the 50 volt design before this starts hurting the wallet
04:59 PM roycroft: the radio station i'm listening to has been running a long story about tonight's lunar eclipse multiple times/hour all day now
05:00 PM roycroft: followed each time by the weather forecast, which calls for 100% cloud cover and rain tonight
05:00 PM Tom_L: hop a flight to circle above the clouds
05:01 PM roycroft: i've seen many lunar eclipses in my life
05:01 PM roycroft: tonight's, though, is supposed to be one of the most spectaular in centuries
05:01 PM Tom_L: wonder if it's visible here
05:02 PM roycroft: the longest one in 600 years
05:02 PM roycroft: most of the western hemisphere will be able to see it
05:02 PM roycroft: so it will depend on the cloud cover where you are
05:03 PM roycroft: it's only a partial eclipse, but it's both the longest one since 1440 and the moon will be at one of its closest points to the earth in as long
05:03 PM roycroft: it will last 3-1/2 hours
05:03 PM Tom_L: starting?
05:04 PM roycroft: iirc around 10pm here
05:04 PM XXCoder: what time?
05:04 PM roycroft: so midnightish where you are
05:04 PM XXCoder: ok
05:04 PM Tom_L: so 8 central
05:04 PM roycroft: no, 12 central
05:04 PM roycroft: you're two hours ahead of us, not behind us
05:04 PM XXCoder: roy and me is on pst
05:04 PM Tom_L: hey, i don't even know what day it is half the time...
05:04 PM XXCoder: lol
05:05 PM roycroft: https://www.timeanddate.com/eclipse/map/2021-november-19
05:05 PM roycroft: check there and you can find out when it will be visible where you are
05:05 PM Tom_L: duration here 6 hrs
05:05 PM roycroft: same here
05:05 PM roycroft: the news report says 3 1/2 hours
05:06 PM Tom_L: i'm not staying up past my bedtime
05:06 PM roycroft: actually, that's probably correct
05:06 PM Tom_L: but i might be getting up in time to see part of it at 4am
05:06 PM roycroft: 6 hours is penumbrial begins to penumbrial ends
05:06 PM roycroft: but 3 1/2 hours is partial eclipse beings to partial eclipse ends
05:06 PM roycroft: and the partial eclipse begins at 11:18 here
05:07 PM Tom_L: so peak would be around 1:30-2am
05:07 PM roycroft: yes
05:07 PM Tom_L: i could get up to pee and peek out the window :)
05:07 PM roycroft: 3:02 am in kansas
05:07 PM linext__: is there such a thing as a power relay that detects current from one outlet and automatically turns on another outlet?
05:08 PM roycroft: yes, that is done all the time
05:08 PM Tom_L: ok was gonna cheat and get burgers tonight. they are out
05:08 PM roycroft: like every extractor that turns on then the attached tool turns on does that
05:08 PM roycroft: s/then/when
05:09 PM CloudEvil: It's even common to have them built into shopvacs
05:09 PM linext__: i want to do that with a shopvac
05:09 PM Tom_L: JT-Shop was doing something like that recently iirc
05:10 PM roycroft: that's what i just said, cloudevil
05:10 PM roycroft: extractor = "shop vac"
05:10 PM CloudEvil: Ah.
05:10 PM CloudEvil: I was not reading that as that, as it was very much sold as a wet+dry vac
05:11 PM roycroft: festool had to movify their extractors when they started making cordless tools
05:11 PM roycroft: at first they sold a bluetooth module that plugged into the extractor receptacle, and one could trigger it with a remote on the tool
05:12 PM roycroft: now they build the bluetooth interface directly into the extractors, but they still have the receptacle for corded tools
05:14 PM JT-Shop: yep my dust collector auto starts with a slight delay after the saw starts
05:15 PM roycroft: i don't have my dust collector set up that way
05:15 PM roycroft: but i do have a relay on it, and i use an rf remote to turn it on and off
05:16 PM roycroft: some day, if i ever get a bigger shop and can improve my dust collection duct work, i'll add auto-on relays to the system
05:16 PM linext__: i bet they exist on ebay for less than $100
05:16 PM roycroft: right now i just have the remote attached to a key fob that i can clip on my belt
05:27 PM linext__: https://www.amazon.com/iVAC-10031-010-Automated-Vacuum-Switch/dp/B0035YGLZG
05:46 PM XXCoder: hey roycroft whats name of cheap copy of evaporust?
06:00 PM CloudEvil: Molasses can work well for some appliications
06:01 PM XXCoder: cloud sure but i meant specific type :)
06:02 PM roycroft: i don't know - i use evaporust
06:02 PM roycroft: the real thing
06:06 PM roycroft: i think not buying that rotex 125 was a good idea - it's still listed on the site, and most things go in minutes
06:07 PM roycroft: so others must think the same thing as me - the 150 is so much better it's worth holding out for that
06:07 PM XXCoder: hmm i remember we having discussion and finding that other brand does indeed sell it, but under different name
06:07 PM XXCoder: but i cant remember other one brand and name
06:08 PM roycroft: i also just used my ras 115 a few minutes ago - it's not as powerful as a rotex, but almost as powerful
06:08 PM roycroft: it's rotary only - no random orbital mode, but i have a 125mm random orbital sander already
06:08 PM roycroft: so the ras 115 basically gets me the same functionality as the rotex 125, but it's 10mm smaller
06:09 PM roycroft: even more reason not to get the ro 125
06:09 PM Tom_L: you know you want one...
06:09 PM roycroft: xxcoder: i don't use it often enough to bother shopping around for alternatives
06:09 PM XXCoder: hmm must be someone else then
06:09 PM XXCoder: oh well lol
06:09 PM roycroft: i can get it at harbor freight, it's not too expensive, and a gallon lasts me a long time
06:10 PM roycroft: i really really don't, tom_l, and never have
06:10 PM roycroft: it's not a matter of wanting it, it's a matter of settling for it
06:10 PM roycroft: and i decided i don't want to settle forit
07:58 PM -!- #linuxcnc mode set to +v by ChanServ
08:10 PM Tom_L: ok got the rotary tuned a bit better
08:21 PM Tom_L: seems redundant to have MAX_VELOCITY and MAX_ACCELERATION in both [AXIS] and [JOINT] sections of the ini
08:22 PM Tom_L: as well as MIN MAX limits
08:25 PM CaptHindsight[m]: it is so you ASS U ME
08:26 PM CaptHindsight[m]: or not
08:26 PM Tom_L: when they added joints they could have eliminated it
08:26 PM CaptHindsight[m]: since LCNC has 2+ motors or "joints" per axis
08:26 PM Tom_L: and maybe they will
08:26 PM Tom_L: eventually
08:27 PM CaptHindsight[m]: i used both earlier today and it didn't bother me
08:27 PM Tom_L: doesn't bother me but i have to remember to change both
08:27 PM CaptHindsight[m]: I will learn to live with this
08:27 PM Tom_L: once things are tuned it won't bother at all :)
08:27 PM CaptHindsight[m]: maybe one day it will just configure itself
08:28 PM Tom_L: i'd still rather have a finger in that
08:28 PM CaptHindsight[m]: and nobody will ever be wounded again
08:28 PM Tom_L: too many things today decide what i need for me
08:31 PM CaptHindsight[m]: works out for the deciderers vs the deciderees
08:31 PM CaptHindsight[m]: i did a fresh 2.8.2 install on a 2.7.x machines without saving the configs
08:31 PM CaptHindsight[m]: just to feel alive again and run free
08:31 PM Tom_L: you still have to manually change a few things
08:31 PM Tom_L: the conversion tool doesn't catch them all
08:31 PM CaptHindsight[m]: just took a few minutes to get things moving again
08:31 PM CaptHindsight[m]: i don't like conversions
08:32 PM CaptHindsight[m]: software or religious
08:32 PM Tom_L: a few motion things were changed
08:32 PM CaptHindsight[m]: not sure which 2.8 has but I didn't take any risks
08:32 PM Tom_L: spindle naming changed a bit
08:33 PM CaptHindsight[m]: been nearly 24 hours and no ends of the world yet
08:33 PM Tom_L: there is no end to it, it's round
08:33 PM CaptHindsight[m]: spinny mc spindafce
08:34 PM CaptHindsight[m]: there should have been a vote on the new names
08:34 PM Tom_L: oh god no.. we'd still be debating it
08:35 PM CaptHindsight[m]: imagine LCNC as a theocratic democracy
08:35 PM CaptHindsight[m]: prayed wars and votes
08:35 PM Tom_L: faith healing
08:35 PM XXCoder: may the chips bless you
08:35 PM Tom_L: or burn you
08:36 PM CaptHindsight[m]: I'm going through all the new settings
08:36 PM XXCoder: burns is how you know it worked :P
08:36 PM CaptHindsight[m]: hardly any anguish yet
08:36 PM XXCoder: ill never forget marlin
08:36 PM XXCoder: i was setting printer up, and new version basically all config setting names was changed
08:36 PM XXCoder: i hope they standardized em
08:37 PM Tom_L: spindle is still part of motion but now it's not motion.spindle.xx
08:37 PM Tom_L: it's just spindle.xx.
08:37 PM CaptHindsight[m]: this is the setting for the opposite of what you do to undo not resetting this setting in reverse of this setting upside down in 2's compliment
08:38 PM Tom_L: there was one about joint it didn't catch too
08:38 PM CaptHindsight[m]: I hope I made this clear
08:38 PM Tom_L: as mud
08:39 PM CaptHindsight[m]: XXCoder: marlin was written by reverse upside down dyslexics
08:39 PM XXCoder: lol
08:39 PM CaptHindsight[m]: i though i had downloaded a joke version of the source when i first read it
08:40 PM XXCoder: i had old configuration file, and i was setting new one for new version
08:40 PM XXCoder: it took me so long because basically no varible name was same
09:26 PM aaroncnc: CaptHindsight[m], i am sensing a dislike for marlin.
09:38 PM CaptHindsight[m]: just its source, the rest is fine
09:38 PM roycroft: i am fortunate that i've not had to reconfigure/rebuild/reinstall marlin
09:38 PM CaptHindsight[m]: Klipper was written by a sane individual
09:39 PM CaptHindsight[m]: not that the marlin devs are insane
09:39 PM CaptHindsight[m]: they just write crap code wit poorly worded comments
09:39 PM roycroft: in other words, typical coders
09:39 PM CaptHindsight[m]: as though they used goggle translate from Gibberish to English
09:40 PM CaptHindsight[m]: i think they wanted to one up HP's RPN
09:41 PM CaptHindsight[m]: it's the the Chrysler minivan of vehicles
09:42 PM roycroft: you say, as i have an hp 11c in my hand doing calculatinos
09:42 PM CaptHindsight[m]: awful looks, ride and durability
09:42 PM CaptHindsight[m]: but it has many seats
09:43 PM CaptHindsight[m]: the Golf clothing of software
09:43 PM roycroft: you should look at the source code of the original bourne shell some time
09:45 PM roycroft: it is written in c, but does not resemble c much at all, as stephen bourne wrote a bunch of macros to make the code look more like algol-68 than c
09:46 PM CaptHindsight[m]: not that I'm complaining
09:46 PM CaptHindsight[m]: I don't like to complain
09:46 PM roycroft: it's some of the ugliest code i've ever seen, anything written in perl notwithstanding
09:47 PM CaptHindsight[m]: Flip switch up to turn off bomb ....
09:48 PM CaptHindsight[m]: after setting dial to #7 and waiting 30 seconds
09:49 PM CaptHindsight[m]: ...... after cutting blue wire
09:54 PM aaroncnc: i have wanted to test out klipper but with all my machines running marlin and working well im not to keen to mess with them right now. but that input shaping is super tempting.
09:57 PM -!- #linuxcnc mode set to +v by ChanServ
10:17 PM CaptHindsight[m]: aaroncnc: https://imgur.com/oCiFCe7
10:17 PM aaroncnc: CaptHindsight[m], that how you run your printers?
10:18 PM CaptHindsight[m]: if i fail GUI school
10:19 PM aaroncnc: CaptHindsight[m], i failed gui school i just accept everything i make will look like windows 95 and i like it....
10:19 PM CaptHindsight[m]: you found your niche and you're sticking with it
10:20 PM CaptHindsight[m]: I like everything about it except for the way it looks
10:22 PM aaroncnc: CaptHindsight[m], you have no idea, it freaks my work out. i run windows 10 with a classic theme that looks just like win 95. It always funny when they pickup my laptop and just stare at it for a good 10 seconds.
10:23 PM CaptHindsight[m]: new doesn't automatically mean better
10:23 PM CaptHindsight[m]: i see all sorts of new that just makes it worse
10:24 PM CaptHindsight[m]: i actually miss Gnome from before they went bat shit crazy
10:25 PM aaroncnc: I have taken a liking to all the dark themes over the years as my eyes cant stand looking at bright things for 8 hours day now.
10:29 PM aaroncnc: if a user wants to have 1 axis on 2 joints they need to use gantrykins correct?
10:31 PM CaptHindsight[m]: not for 2.8 http://linuxcnc.org/docs/2.8/html/man/man9/gantrykins.9.html
10:32 PM CaptHindsight[m]: http://linuxcnc.org/docs/html/man/man9/kins.9.html
10:33 PM aaroncnc: okay another issue to solve for my config tool. low priority but still on my list
11:58 PM roycroft: gnome has been bat shit crazy since day one