#linuxcnc Logs
Aug 15 2017
#linuxcnc Calendar
12:00 AM hazzy: I have a similar collect chuck and plan on doing the same with it
12:02 AM RyanS: but 2Nm doesn't seem like much
12:02 AM hazzy: How bout a clutch from an auto AC compressor??
12:02 AM hazzy: Good holding torque and cheap
12:02 AM RyanS: 20mm shaft with erm 48mm OD deep groove bearings
12:03 AM hazzy: Thanks, my chuck has a 20mm shaft as well
12:08 AM hazzy: https://www.walmart.com/ip/AC-A-C-Compressor-Clutch-Repair-Kits-Pulley-Bearing-Coil-Plate-For-03-08-Toyota/132323496?wmlspartner=wlpa&selectedSellerId=3935&adid=22222222227057164798&wmlspartner=wmtlabs&wl0=&wl1=g&wl2=c&wl3=161519352134&wl4=pla-268263579586&wl5=9010958&wl6=&wl7=&wl8=&wl9=pla&wl10=113548600&wl11=online&wl12=132323496&wl13=&veh=sem
12:08 AM RyanS: I have a24V 4.5A PSU, current stepper draws 2.8, so depends if the clutch draws < 1.7A
12:08 AM RyanS: clutch is the same as that electromagnetic brake in principle?
12:12 AM RyanS: only 9w for the brake actually
12:13 AM RyanS: what do VMC 4th axes use? pneumatic disc brake?
12:15 AM hazzy: Good question, I know most are pneumatic and a few electromagnetic. Don't know working principal though
12:20 AM RyanS: i'm tempted to just use a bolt to lock it but that kind of defeats the purpose of an electronic dividing head
12:24 AM hazzy: That's no fun :D
12:24 AM hazzy: http://www.chainreactioncycles.com/us/en/clarks-m2-hydraulic-disc-brake-rotor/rp-prod135586?gs=1&utm_source=google&utm_term=&utm_campaign=Chain+Reaction-US-PLA-PLA-All-All-SE-Shopping&utm_medium=base&utm_content=mkwid|s8jSPubEe_dc|pcrid|68603497608|pkw||pmt||prd|491500US
12:25 AM hazzy: Maybe something like this with a small air cylinder to pull the cable ...
12:26 AM hazzy: But at that point just make a cam lock and actuate with air cylinder
12:26 AM hazzy: Do you have air?
12:29 AM hazzy: This indexer has a air actuated and disk break:
12:29 AM hazzy: http://3690-presscdn-0-3.pagely.netdna-cdn.com/wp-content/uploads/2012/09/4thMegaBackNoCoversWEB.jpg
12:30 AM hazzy: I wonder if there is a lever in there to give some mechanical advantage
12:30 AM RyanS: yep. surely that electromagnetic friction brake is more than 2Nm? I have a wheelchair motor a the friction brake is bloody strong --but draws 7A
12:37 AM hazzy: Ok, calling it a day
12:37 AM hazzy: gn8
12:37 AM RyanS: seeya
01:25 AM archivist: RyanS, there are a number of error sources, they can add, so you see a regular angular error
01:26 AM archivist: I would recommend a rotary table from a good maker with something like a 90:1 worm in it
02:06 AM Deejay: moin
02:07 AM gloops: ok, i have no limit switches on my machine yet, how do i set up some soft limits or whatever to get round these error messages
02:12 AM archivist: gloops, soft limits are built in, just home correctly
02:13 AM archivist: when you set up you were asked axis limits, edit them to make sure they are correct, axis will show a box of that volume
02:16 AM gloops: right will check that, snag i have the pc running my machine in the garage isnt on the net, so i cant watch a youtube vid on the machine will its active haha i have to go back into the garage
02:16 AM archivist: time for real wire to the garage
02:17 AM gloops: ill set something up to get it online yeah
02:17 AM gloops: one day! lot of other stuff to fit in as well
02:26 AM IchGucksLive: morning from germany
02:26 AM archivist: I run without home/limit switches never got around to fitting
02:26 AM IchGucksLive: 10min work livelong benitit
02:26 AM IchGucksLive: so do it
05:12 AM Deejay: moin
06:30 AM nitrxgen_: so i have a 3020T arrive, unboxed, powered on, it came with a usb/serial plug adaptor thing, and i used planetcnc to try work it, nothing was happening :(
06:30 AM nitrxgen_: not serial, parallel -- any pointers? im soon to go out and buy an actual parallel port for pcie
06:44 AM nitrxgen_: come on that must be beginner things
06:45 AM Tom_itx: call planetcnc and ask em
06:46 AM Tom_itx: doesn't sound like anything supported by linuxcnc
06:46 AM nitrxgen_: its not their cnc, so idk if the problem is really theirs :? the steppers lock on with power on
06:46 AM Tom_itx: then call the ppl you got the mill from
06:47 AM Tom_itx: especially if it's supposed to be ready to go
07:07 AM Phipliv: Was JT-Shop looking for a small high power motherboard? Or was it someone else?
07:08 AM Phipliv: http://www.cnx-software.com/2017/08/15/gigabyte-ma10-st0-server-motherboard-is-powered-by-intel-atom-c3958-denverton-16-core-soc/
07:09 AM Phipliv: Well, it is only an atom
07:09 AM Phipliv: but 16 core :)
07:10 AM archivist: 16 cores of slow?
07:10 AM jthornton: yes it was me asking about a motherboard for my ubuntu server
07:10 AM Phipliv: Hell yeah!
07:11 AM archivist: nitrxgen_, that model number means little to anyone as it is a bit generic
07:11 AM Phipliv: I might be mixing up multiple people's requests
07:11 AM Phipliv: someone was looking for a small board as well
07:12 AM Phipliv: anyway - back to work
07:12 AM archivist: sod work, retirement++
07:42 AM Phipliv: :'(
07:42 AM Phipliv: One day... if I'm lucky.
07:42 AM Phipliv: 3 of my team have retired so far this year.
07:54 AM archivist: damned Lemo connectors are badly specified, makes it hard to get the other half
08:24 AM codepython777: http://www.grizzly.com/products/58-pc-Clamping-Kit-for-5-8-T-Slots/G1076?utm_campaign=zPage&utm_source=grizzly.com - does anyone know what actual measurements these could be? How do I size them for my cnc bed?
08:25 AM archivist: you have an alloy bed iirc, measure it
08:27 AM codepython777: archivist: when they say 1/2" T-slots - which measurement is 1/2"? T-slots need more than one measurement to specify size from what I can tell?
08:27 AM archivist: the width of the slot
08:28 AM codepython777: There are two : The bottom hole is .33 in width, and the one above it is .56"
08:28 AM codepython777: Let me see if i can draw it
08:31 AM codepython777: archivist: http://imgur.com/a/hcg0U
08:32 AM archivist: that is open top hardly useful for a T nut
08:33 AM codepython777: archivist: That is the t-nut dimensions - its closed from the top
08:34 AM archivist: show the slot image not your drawing
08:34 AM codepython777: archivist: http://imgur.com/a/A6Z1j
08:34 AM archivist: you can add dimensions to the image to help
08:35 AM archivist: there is a special nut for that easily obtained
08:36 AM archivist: the TOP slot width that retains the nut
08:39 AM codepython777: archivist: Trying to dimension that
08:45 AM archivist: they sit in like http://www.collection.archivist.info/archive/mirror/codep.jpg
08:48 AM codepython777: archivist: http://imgur.com/a/nQa3E
08:49 AM IchGucksLive: hi from germany
08:49 AM archivist: ignore the part at the bottom
08:49 AM archivist: it is the upper slot the nut fits in
08:50 AM archivist: http://www.collection.archivist.info/archive/mirror/codep.jpg
08:51 AM IchGucksLive: archivist is this AL-profile from local dealer or internet shop
08:51 AM codepython777: archivist: http://imgur.com/a/dKnVG
08:51 AM codepython777: archivist: Also, how do i prevent rust in those nuts? WD40?
08:52 AM archivist: http://www.ebay.co.uk/itm/T-Nuts-for-3030-Aluminium-Extrusion-Profile-30mm-Slot-8-End-Cap-3D-Printer-CNC-/201525243196
08:52 AM IchGucksLive: codepython777: silikon oil
08:53 AM codepython777: archivist: So T-nut M6 or M8?
08:53 AM archivist: may get the m8 in
08:53 AM codepython777: IchGucksLive: Thanks
08:53 AM IchGucksLive: archivist the shop also got the inductiv switches
08:54 AM archivist: you can see those are shaped to fit the angles in your extrusion
08:54 AM archivist: IchGucksLive, wtf does that have to do with me
08:54 AM codepython777: archivist: What is slot 8 there?
08:54 AM codepython777: M8?
08:55 AM archivist: you have a close to 8 mm slot
08:55 AM codepython777: I know that an M8 screw drops down into that slot
08:55 AM codepython777: almost touching though. M6 is easier
08:56 AM archivist: the size of the nut may be too loose with the 6mm
08:56 AM IchGucksLive: codepython777: nut is 8mm wide
08:57 AM archivist: whoever sold you the extrusion should have the nuts
08:57 AM codepython777: archivist: Its from omio cnc
08:58 AM IchGucksLive: standard slot is 10 and 8
08:59 AM IchGucksLive: im off till later
09:02 AM archivist: fed up with him barging in and "helping" the wrong person
09:06 AM archivist: another design http://www.ebay.co.uk/itm/Select-T-Slider-Nuts-M5-M8-for-20-30-40-45-Aluminium-Extrusion-Profile-3D-CNC-/112318785326
09:07 AM archivist: they spread the load a bit better
09:09 AM codepython777: archivist: I asked omio if they would sell me some nuts
09:11 AM archivist: I would think it should come in their accessory box
09:18 AM archivist: with the router type machines you dont want those larger clamp sets, too brutal, with bend the slots
09:19 AM codepython777: archivist: I see.
09:41 AM jdh: I got 4 nuts with mine.
09:44 AM mtpocketscnc1: morning
10:25 AM gloops: ok, cannot see any obvious logical reason im not getting anything from trying to set scale, could this be a noise matter - unshielded cable
10:28 AM archivist: more like not reloading properly
10:29 AM archivist: it is read on start up
10:29 AM gloops: not sure what you mean?
10:29 AM archivist: which scale are you on about
10:29 AM gloops: loading ini file - or linux cnc not loading
10:30 AM gloops: im trying to get 100mm = 100mm on the machine
10:30 AM gloops: not close - tried all kinds of inputs cannot work anything out with it
10:30 AM archivist: what is the error percentage, adjust by that amount
10:30 AM gloops: adjust what?
10:31 AM archivist: the multiplier in the ini that sets the scale
10:31 AM gloops: for example, ive got a pitch of 177mm - that gives a tiny movement on the machine, 100mm = about 10mm
10:32 AM gloops: if i reduce the pitch in stepconfig to say 5 its getting closer
10:32 AM gloops: but that is totally unfathomable
10:32 AM archivist: it will become obvious when you but in the right number
10:32 AM archivist: put
10:33 AM archivist: are you in inches or mm
10:33 AM gloops: when i enter the correct pitch and steps in stepconfig, the scale (steps per unit) in the ini file is reading 44 - it should be 2.4
10:33 AM gloops: correcting the ini file doesnt work
10:33 AM gloops: im in mm, tried inches though
10:34 AM archivist: need to wean yourself off stepconf
10:34 AM gloops: so in ini - SCALE
10:34 AM gloops: what else contributes to this?
10:34 AM archivist: 177 mm=1 rev?
10:35 AM gloops: yes
10:35 AM gloops: 177.8
10:35 AM archivist: and microsteps /real steps?
10:35 AM gloops: microsteps set at 2
10:36 AM gloops: 400 steps - 177.8mm
10:36 AM archivist: so that is 400 steps per 177.8
10:36 AM gloops: yes 2.25 steps per mm
10:36 AM archivist: rather course
10:37 AM gloops: yes i will adjust that lol when i get how to set any accurate measurement
10:37 AM archivist: this is a real not and integer in the ini
10:37 AM archivist: and/an
10:38 AM archivist: put in 2.25 and restart
10:38 AM gloops: this is the actual variables
10:39 AM gloops: i will try that, i didnt know f you had to save and reboot
10:39 AM gloops: ive been undoing everything ive changed in ini before closing so i didnt lose the orogial, but made a copy now
10:39 AM gloops: ok i will do that now
10:40 AM archivist: may stall if too coarse
10:41 AM archivist: change to 8 or 16 microsteps on the driver and retry
10:41 AM archivist: with relevant changes to scale :)
11:21 AM gloops: ok, ive got around 100mm there with a tape measure, that will do me for now lol! thank you
11:23 AM archivist: with chain I would expect a little adjustment needed
11:26 AM gloops: yes probably a good bit of tweaking, but at least i can look at the settings now and work out whats what and what i can change to do what etc
11:28 AM gloops: so stepconfig just takes the variables, does the math and then writes that to the ini file?
11:29 AM gloops: in which case you may as well do the maths yourself as you know how you are working it out, and change the ini file yourself
11:29 AM archivist: it never reads the ini which is a pain
11:29 AM archivist: yes once you know what you are doing hand editing is better
11:30 AM archivist: the wizzards are only know a subset of possibilities
12:19 PM IchGucksLive: hi
12:19 PM nitrxgen: im having a hard time figuring this out... no connection between pc and cnc... i dont know where the fault lies
12:19 PM IchGucksLive: gloops:
12:20 PM nitrxgen: i think it may be choosing the correct port but im not sure where to find it
12:20 PM IchGucksLive: nitrxgen: is the port adress correct
12:20 PM IchGucksLive: nitrxgen: dmesg | grep parpo*
12:20 PM nitrxgen: win7
12:21 PM IchGucksLive: how the hell are yoiu asking here if you run sutch a crap
12:21 PM IchGucksLive: put in the DVD of linuxcnc and run the mashine on the DVD
12:21 PM nitrxgen: lol
12:21 PM IchGucksLive: i had my last win in 2008
12:22 PM IchGucksLive: since never used one
12:22 PM nitrxgen: well thanks anyway
12:22 PM IchGucksLive: crap is the nae of win cnc
12:22 PM nitrxgen: im sure theres a problem somewhere i just need to fix
12:22 PM IchGucksLive: nitrxgen: did you check the hardware manager
12:22 PM nitrxgen: i did
12:22 PM IchGucksLive: it tels you the name of the game
12:22 PM IchGucksLive: 0x378
12:23 PM nitrxgen: the store-bought parallel port pcie card, drivers installed, hardware manager gives I/O range numbers which none seem to do anything when i run it through mach3
12:24 PM IchGucksLive: then the port is not 0x378
12:24 PM IchGucksLive: its around 0x2008
12:24 PM nitrxgen: when the pc logs in, the cnc controller blips a little, so theres a connection going on, just not from mach3
12:24 PM IchGucksLive: no it youst ecp/epp response
12:24 PM IchGucksLive: nothing to do on mach crap
12:25 PM cradek: nitrxgen: this is not the right place to get help with windows or mach3
12:25 PM IchGucksLive: im in germany ;-)
12:25 PM nitrxgen: ive tried 0xa000 0xa010 0xa020 etc, moved the card to another slot, hardware manager gives 0xb000 etc
12:25 PM nitrxgen: cradek, sorry
12:25 PM IchGucksLive: put in the linuxcnc dvd and you are running in 5min time
12:25 PM nitrxgen: would be good if i had a cdrom
12:25 PM IchGucksLive: download it
12:26 PM nitrxgen: ok
12:26 PM IchGucksLive: more infos on youtube https://www.youtube.com/channel/UCmwhCL92ZQRSVqFe3jGwJSQ/videos
12:27 PM nitrxgen: its literally my first cnc machine so i dont have a second computer for it
12:27 PM IchGucksLive: ok im on my 400+ mashine no win on
12:28 PM gloops: Ich
12:28 PM IchGucksLive: hi
12:28 PM gloops: hi hows it going
12:28 PM IchGucksLive: why only 2.25 steps /mm
12:28 PM IchGucksLive: you can go subdivide from 400-> 800steps
12:29 PM gloops: ive been having a lot of trouble getting scale set up, even now i thought id sorted it but not sure
12:29 PM gloops: and not sure how
12:29 PM IchGucksLive: please hit my nick and we sort it out
12:29 PM gloops: not really concerned with resolution atm i just need a formula to get scale right
12:30 PM IchGucksLive: simple
12:30 PM IchGucksLive: and why dident you use the setup wizard
12:30 PM nitrxgen: ah hang on
12:30 PM gloops: stepconfig?
12:30 PM nitrxgen: running some other drivers made the steppers make noise
12:30 PM gloops: i have now got 100mm = 100mm in stepconfig
12:30 PM nitrxgen: mustve tickled the correct port/device
12:31 PM gloops: but not in axis
12:36 PM hazzy1 is now known as hazzy
01:09 PM IchGucksLive: first channel spam then no post cool
01:10 PM IchGucksLive: getting thundery around
01:12 PM Deejay: thundery?
01:12 PM IchGucksLive: yes
01:12 PM IchGucksLive: Deejay: http://www.unwetterzentrale.de/uwz/
01:13 PM IchGucksLive: Deejay: https://www.lightningmaps.org/#m=sat;r=0;t=3;s=0;o=0;b=;n=0;y=50.1868;x=10.3241;z=7;d=2;dl=2;dc=0;
01:14 PM Deejay: nothing here
01:14 PM IchGucksLive: lucky you are
01:43 PM IchGucksLive: im off Gn8
04:07 PM Deejay: gn8
04:12 PM XXCoder: JT-Shop: https://futurism.com/a-drone-unintentionally-landed-on-britains-largest-warship-and-no-one-noticed/
04:14 PM gloops: XXCoder drones are the new form of defence
04:15 PM gloops: UK plans to surround every warship and sub with a swarm of drones, airborne and underwater, nothing will every get near the ship
04:15 PM XXCoder: probably.
04:16 PM XXCoder: biggest issue is battery
04:17 PM gloops: still somebody should have been on lookout duty lol
04:19 PM XXCoder: indeed
04:19 PM XXCoder: could carry 2 kilo of bomb
04:28 PM JT-Shop: XXCoder: I'm behind the 8 ball for bandwidth :(
04:29 PM XXCoder: ow. well basically
04:29 PM XXCoder: drone pilot was forced to land due to winds, and landed on miliary carrier
04:29 PM XXCoder: he could take off later and returned drone
04:29 PM XXCoder: he turned himself in, but was not really questioned
04:29 PM JT-Shop: and no one noticed?
04:30 PM XXCoder: yep
04:30 PM XXCoder: happened at uk
04:30 PM JT-Shop: must have been a plane of some sort
04:30 PM XXCoder: dunno, though they did say it was not armed and on mission so probably why they wasnt too worried,
04:35 PM gloops: well another day a bit more learned
04:35 PM gloops: ill be cutting in a month at this rate lol
05:17 PM Tom_itx: JT-Shop i meant to ask, do you know if those relays are make before break or not?
05:18 PM Tom_itx: that may just be a switch thing and not apply to relays, i'm not sure
05:26 PM HighInBC: there are such relays
05:29 PM JT-Shop: Tom_itx: I doubt that they are as that is a special relay, normal relays are break before make
05:43 PM phipli: JT-Shop: he had a quad
05:43 PM phipli: the ship isn't commissioned
05:43 PM phipli: so it technically is a civilian ship
05:43 PM phipli: no armaments or planes or anything yet
05:45 PM JT-Shop: phipli: a dog killed all my chickens yesterday, knocked down the fence and just killed them all
05:45 PM JT-Shop: the dog is dead as well
05:46 PM phipli: Oh, damn
05:46 PM phipli: sorry to hear that JT-Shop that's more than shit
05:46 PM JT-Shop: yea, I was both pissed off and sad yesterday
05:47 PM JT-Shop: one hen didn't get killed out right but died last night after I went to bed
05:47 PM phipli: birds of any time don't tend to be great with shock
05:48 PM JT-Shop: I have 8 RIR females and 1 Barred Rock male on order and will arrive Thursday
05:48 PM phipli: Good
05:48 PM phipli: what age?
05:49 PM JT-Shop: tearing down the chicken run (it was too low) and building a new chicken yard
05:49 PM JT-Shop: 1-2 days old
05:49 PM phipli: awwww
05:49 PM JT-Shop: be little fuzz balls lol
05:49 PM phipli: you better have plenty of room on your camera's SD card
05:49 PM andypugh: I need to get the clutch centre nut off of my bike.
05:49 PM andypugh: But I can’t find the tool
05:50 PM phipli: I latched onto this channel because I was flitting around IRC and got distracted - when I came back you were all talking about chickens :)
05:50 PM JT-Shop: if you buy another one you will find the old one
05:50 PM andypugh: No problem, I can weld a handle to one of the old clutch plates.
05:50 PM JT-Shop: learned a lot this go around
05:51 PM andypugh: Except I loaned the MIG to a neighbour.
05:51 PM andypugh: SO I had to use TIG
05:51 PM JT-Shop: ah I know what andy needs now
05:51 PM phipli: gas?
05:51 PM andypugh: But I couldn’t get it to weld, and found that the TIG was stuck on 12A
05:51 PM phipli: stick welder?
05:51 PM phipli: couple of rivets?
05:52 PM andypugh: I ended up welding with the top off of the welder with a bench PSU feeding into the potentiometer board to set the current.
05:52 PM phipli: heh
05:52 PM andypugh: I loaned the rivetter to a friend
05:52 PM andypugh: I am seeing a pattern here.
05:53 PM phipli: your workshop is too generous :)
05:53 PM phipli: you need to attach recoil bungees to all your tools
05:54 PM phipli: JT-Shop: we have a high pitched deterrent thing to help keep the cats away from our girls
05:54 PM phipli: was more use when they were young...
05:54 PM phipli: these days they'd probably kick the shit out of any cat that came too close
05:55 PM phipli: JT-Shop: this sort of thing : https://www.amazon.co.uk/PestBye-Ultrasonic-Operated-Activated-Repellent/dp/B00FXSU2WK/
05:55 PM gloops: impact driver?
05:56 PM JT-Shop: yea I tried one of those on a dog but it only pissed off the owner the dog was deaf I think
05:56 PM phipli: quite common in dogs
05:56 PM phipli: all the inbreeding that rich people with nothing better to do have done to them
05:57 PM andypugh: Anyway The tool didn’t work, so I decided now was the time to get an electric impact driver.
05:57 PM JT-Shop: it has escalated way beyond that I'm afraid, coyotes and dogs are on my endangered species list now.
05:58 PM andypugh: Looked around for a stockist of the type I have a ton of batteries for, finally ended up on Amazon “Want it tomorrow? Order within 36 seconds…"
05:58 PM JT-Shop: coyotes just grab one and run fucking dogs just kill them all I'm so pissed sorry for the language
05:58 PM andypugh: Of course, I missed the 36 second deadline by 2 seconds...
05:58 PM andypugh: I need the bike back together and running Thursday night.
05:59 PM gloops: or, first measure the thread and locate a replacement nut - then use a nut splitter on the old one, only a cheap tool
05:59 PM JT-Shop: kinda hard inside a clutch housing...
05:59 PM gloops: yes, if accessible
05:59 PM andypugh: You don’t know anything about motorcycle clutch centre nuts do you? :-)
06:00 PM gloops: i had a basket clutch off a bike - over 20 years ago though haha
06:00 PM andypugh: 30mm across flats, 95Nm, fine thread, down a hole on a spinning shaft.
06:00 PM andypugh: They haven’t changed
06:00 PM andypugh: (In fact the bike in question is 13 years old)
06:01 PM gloops: cant remember how or what it looked like now, didnt have any special tools though i dont think
06:01 PM phipli: Foxes get kill everything
06:01 PM phipli: real problem over here
06:01 PM phipli: they're smart
06:01 PM phipli: ignore your birds until they're hungry and then it is really hard to stop them
06:02 PM gloops: thats why fences were invented
06:02 PM phipli: gloops: they dig, climb, chew and just about everything else
06:03 PM gloops: ive got some chickens heh, last trouble with a fox one killed about 9 muscovy ducks in one visit
06:03 PM andypugh: They pick locks too. Most of the subscribers to the Bosnianbill youtube channel are foxes.
06:04 PM phipli: andypugh: I suspect the buggers do
06:04 PM phipli: andypugh: what is special about the tool for the nut?
06:04 PM phipli: can you modify a socket?
06:04 PM gloops: we arent overrun with them here though, one or two knocking about, usually mothers with cubs that get desperate
06:05 PM andypugh: phipli: The special tool is to immobilse the clutch centre, otherwise it just spins
06:05 PM phipli: something like a cranklock?
06:05 PM phipli: couple of pins and a bar?
06:05 PM andypugh: Either https://www.ebay.co.uk/p/?iid=142476471113&&&dispItem=1&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=9988834&poi=&googleloc=1006500&device=c&campaignid=797602469&crdt=0&chn=ps
06:06 PM andypugh: Or https://ff3d8e6495061f28a832-a7869bbdcfcea96a643a5d6aa79482f7.ssl.cf1.rackcdn.com/enlarged/08-0008_alt1.jpg
06:06 PM phipli: ah
06:06 PM phipli: like a giant thing for a cassette on a bike wheel
06:06 PM phipli: but inverted
06:07 PM phipli: (pushbike)
06:07 PM phipli: CNC time?
06:07 PM phipli: you only need a few spikes
06:07 PM rob_h: any one here use random tool changer or have a sim setup to check a bug i might of found?
06:07 PM phipli: depending on how tight it is
06:07 PM BeachBumPete: Didja burn out your clutch?
06:09 PM andypugh: BeachBumPete: Well, it was slipping last time I did a track day about this time last year, but it’s been fine on the road until recently. Now it _drags_ on the road and makes it hard to get neutral. So I got a second-hand one from a lower milage bike. And, to my disappointment, found that the clutch plates were thinner than my old ones!
06:09 PM phipli: andypugh: are there any bolt holes in it?
06:10 PM BeachBumPete: yeah you often have to replace the steels as well as the plates
06:10 PM andypugh: phipli: Yes. I used them once before on a different bike. Ans snapped the casting.
06:10 PM gloops: bloke on youtube - peice of cloth wrapped round, jams the plates - remove nut
06:10 PM gloops: preferably the cloth is the jeans you are still wearing
06:10 PM andypugh: BeachBumPete: Yes, the new steels are fractionally thicker, and the basket is a lot less worn. I hope the centre bearing is in better shape too.
06:11 PM phipli: andypugh: I advise you don't do that then :)
06:11 PM gloops: in biker tradition
06:11 PM phipli: gloops: bar through a rag and twist it trick?
06:11 PM andypugh: Everythign is surprisngly fragile.
06:11 PM phipli: or just wedge it into a corner til it jams?
06:12 PM phipli: andypugh: KTM?
06:12 PM phipli: nice big single?
06:12 PM gloops: yeah it is tinny
06:13 PM andypugh: If you look at that second picture I posted a link to. Both parts rotate separately. The inner one very freely, the other one with the engine.
06:13 PM andypugh: No, this is my R1
06:13 PM gloops: phipli well it sometimes works, cloth doesnt usually lock the machine up though until it gets to the arm inside it
06:13 PM andypugh: I have made the original clutch last for 113,000 miles.
06:14 PM phipli: gloops: a rag with a screwdriver twisted in the ends is a great way to get a grip on a smooth surface
06:14 PM gloops: yes it is
06:14 PM phipli: andypugh: at least you wont have to change it again any time soon :)
06:14 PM uwe__ is now known as uwe_
06:15 PM gloops: you should have a range of different rags hung up with different gripping properties just for this kind of thing
06:15 PM gloops: 'pass me the medium-soft twisting rag'
06:15 PM phipli: Improvise impact driver with a stepper motor?
06:16 PM gloops: id just get a manual impact driver and whack it with a big hammer
06:16 PM phipli: yes gloops, but it isn't yours!
06:17 PM gloops: you dont want to be levering anything round that, you could even distort the shaft
06:17 PM andypugh: Manual impact drivers don’t loosen 95Nm nuts which have been staked.
06:18 PM phipli: any friendly neighbours that might have some appropriate tools?
06:18 PM phipli: or a machinemart or something?
06:18 PM gloops: loosening potential proportional to hammer size
06:18 PM phipli: he only wants to loosen the one part though
06:19 PM gloops: its the shock that moves it
06:19 PM andypugh: Machinemart is 10 days delivery on the tool
06:19 PM sync: andypugh: get a makita dtw285, it is the shits
06:19 PM gloops: lol
06:20 PM andypugh: I already ordered the Ryobi one
06:20 PM andypugh: Cheaper, not quite as good, but I have a ton of One+ batteries and tools.
06:21 PM gloops: £1 says it wont do it
06:21 PM phipli: andypugh: don't RS do same day delivery?
06:21 PM phipli: if you want it tomorrow
06:21 PM sync: yeah, I'm undecided which manufacturer I want to buy in with battery powered stuff
06:21 PM andypugh: I don’t think they do motorcycle tools.
06:21 PM gloops: actually, 10 pence says it wont do it
06:22 PM phipli: they do impact drivers andypugh
06:23 PM phipli: he says... they redirected me to drills
06:23 PM phipli: just checking to see if any of them actually fit the bill
06:23 PM phipli: (wasn't expecting them to decide "impact driver" = "drill")
06:23 PM andypugh: Unfortunately there are two things called “impact drivers” and all the ones on RS are the wrong sort. I need a 1/2” square for spinning nuts, not a 1/4” hex for driving screws.
06:24 PM sync: yeah
06:24 PM gloops: was going to say i got a cheap brand 12v one, Mac, it is actually very good for driving screws
06:24 PM gloops: it is in no way comparable to an air impact driver
06:25 PM phipli: andypugh: yeah... I'd never call anything designed for screws an impact driver. But then I guess they are mainly an electronics supplier :)
06:26 PM phipli: right
06:26 PM phipli: anyways
06:27 PM JT-Shop: I'm quite impressed with my DeWalt 20v impact driver
06:27 PM phipli: I'm off to bed
06:27 PM phipli: night folks
06:27 PM JT-Shop: it will drive 4" screws into oak
06:27 PM JT-Shop: night
06:27 PM phipli: Don't forget to send pictures of the chickens when they arrive
06:27 PM JT-Shop: aye
06:28 PM gloops: yeah mine puts heavy guage decking screws in no problem JT, where 18v cordless wont
06:29 PM skunkworks: JT-Shop, impact drivers are just cool in general... I saw a contractor using on and decided that I needed on. use it all the time
06:29 PM skunkworks: just used it today for an arbor and some split rail fencing
06:29 PM JT-Shop: yea, my neighbor brought his over an sold me in a second
06:29 PM JT-Shop: I already had a 20v drill so I just got the one without the battery
06:30 PM JT-Shop: now I have two of each... long story
06:37 PM gloops: i reckon a corded hammer type drill might have a similar effect, if you use the percussion hammer type, - corded drills have bigger motors
06:40 PM * JT-Shop calls it a night... it's been a rough 2 days for me
06:52 PM gloops: well, took some time and some dumb questions but im now onto homing and limits, my slow machine is now very fast, my scale is right, another week i reckon ill be ready for test cuts
07:01 PM Cromaglious_: ugh... damn VA! I want my money! Been too tight to get a spindle...
07:02 PM Cromaglious_: I have my Craftsman router on the 3040 right now... I am so building my own CNC when my money comes in
07:02 PM gloops: hows it working with the router?
07:03 PM Cromaglious_: tramming is totally screwed...
07:04 PM gloops: is that because you cant level the router or something?
07:06 PM Cromaglious_: I need to slot one hole, and add some nod grub screws
07:09 PM gloops: my main concern with routers is the noise, i couldnt run one for hours with my neighbours
07:09 PM gloops: well actually i probably could but i dont want to
07:11 PM CaptHindsight: a laser is quiet
07:11 PM SpeedEvil: I wish CNC shapers were a bit easier.
07:11 PM SpeedEvil: 5 axis shaper would be neat.
07:11 PM gloops: i got a little 400w used spindle off ebay to use for testing, it isnt strong enough for any real work i dont think but it was going for nothing, its really quiet compared to router, its about as loud as a hand drill, not even that
07:12 PM SpeedEvil: gloops: when cutting?
07:12 PM SpeedEvil: Decent routers are pretty quiet when not cutting - but...
07:12 PM gloops: Capt yeah lasers are interesting
07:12 PM gloops: Spped no not cutting, just running, havent cut with it yet
07:13 PM gloops: my hitachi routers sound like a jet engine starting up with a bag of spanners thrown in them
07:17 PM likevinyl is now known as Guest78067
07:21 PM BeachBumPete: even CNC routers with high quality commercial spindles that are nearly silent during non cutting times WAIL once the tool hits the work. It would be nice to be able to quiet down a large format CNC router but I don't think it is really feasible. Now a table top machine lots of guys including Connor here have built them inside a plexiglass and MDF
07:21 PM BeachBumPete: enclosure which would cut down on noise of both sorts considerably...
07:24 PM Cromaglious_: That's why I so want to get a VFD and spindle... SO much quiter
07:24 PM Cromaglious_: quieter
07:24 PM malcom2073: Yeah, an enclosure is really the only way to quiet it down
07:25 PM malcom2073: or reduce both your speed and feed
07:25 PM malcom2073: They cut quite quiet at 800rpm :P
07:25 PM Cromaglious_: Mine's going into china birch plywood, cabinet shop rejects
07:25 PM BeachBumPete: never seen a router spindle spin that slow before
07:25 PM Cromaglious_: Much prettier than MDF even with the holes
07:26 PM Cromaglious_: I'm also thinking about one of those powerhead bt40 spindles
07:27 PM Cromaglious_: driving it with the spindle in an alternate mounting
07:28 PM Cromaglious_: with a 3:1 reduction a 24k would drive the powerhead at 8k
07:29 PM Cromaglious_: so spinding the bt40 at 800 would have the spindle at 2400, much more usuable rpm
07:30 PM Cromaglious_: have the spindle pulley on a piece of 5/8 ground shafting... chuck it in a ER20 collet on the spindle
07:31 PM gloops: yes you have got to insulate
07:31 PM Cromaglious_: http://www.ebay.com/itm/CNC-BT40-Spindle-Unit-4HP-3KW-Power-Head-3000rpm-6000rpm-Drawbar-Tool-Drilling-/192184817254
07:32 PM gloops: im gonna lag the boxing in with 75mm rigid foan like they use in cavity walls
07:33 PM gloops: may as well tackle the noise thing from the beginning, you dont want an eviction order stopping the action later
07:34 PM gloops: anyway bedtime
07:34 PM andypugh: Cromaglious_: You could keep both spindles active, I guess, and have an electric clutch to disconnect the Powerhead
07:42 PM Cromaglious_: 24K Spindle would be swapped out for the power head and mounted above it to drive the power head
07:43 PM Cromaglious_: When I do this I should a mill by then
07:43 PM andypugh: Sounds like quite a lot of trouble.
07:44 PM andypugh: A 3000 rpm induction motor geared up might be easier.
07:44 PM andypugh: Is there any scope for a second Z axis? A rack-drive gantry could easily acommodate that.
07:44 PM Cromaglious_: I don't have to change any wiring though... and I get a steel capable hogger
07:45 PM andypugh: (That’s another cool thing about the Bell Everman Servobelt, you can have multipe carrriages on the same belt)
07:45 PM Cromaglious_: most of my cnc work would be wood or AL, I want to be able to do steel though
07:46 PM Tom_itx: not at 24k you won't
07:46 PM Cromaglious_: tom_itx dd you not see the gearing down for the power head above?
07:46 PM Tom_itx: yeah
07:46 PM Tom_itx: i don't see that working too well
07:48 PM Cromaglious_: most of CNC work will be for theatrical purposes... Swords, molding, garnish for the stage...
07:49 PM Cromaglious_: corbels, steampunk gear stuff..
07:49 PM Cromaglious_: also making bucks for the vacuum former.
07:50 PM HighInBC: noice
07:50 PM Cromaglious_: shakespeareinthevines.org Temecula ca
07:52 PM Cromaglious_: I want a 4x8' cut area with at least a 12" Z and 24" and 36" under gantry option
07:53 PM HighInBC: can anyone recommend a decent cnc router than could fit on a work desk and cut wood and plastic? This would be my first CNC. I have enough skill to assemble, solder read instructions etc
07:53 PM Cromaglious_: building the table right will also give me a 12" swing 4th axis (24" diameter)
07:53 PM Cromaglious_: HighInBC, What's your max work envelope?
07:54 PM Cromaglious_: and budget
07:55 PM HighInBC: my budget is <= $1000. 30cm x 30cm would probably be enough. It is most for cutting holes in project boxes
07:56 PM Cromaglious_: 18cm x 32cm x 70cmish work area on a cnc3040 (ebay $500ish)
07:57 PM Cromaglious_: 18cm x 32cm x 7cmish work area on a cnc3040 (ebay $500ish)
07:57 PM HighInBC: I could work with that
07:58 PM Cromaglious_: electronics are crap, get the bare mechanicals and spend the money on decent steppers and power supply and ebay BOB is OK if you have a parallel port.
08:00 PM HighInBC: parallel port? It has been over a decade since I had a machine with one of those
08:00 PM Cromaglious_: I have one and I upgraded my steppers to jmc-motor iHSS57-36-20 (NEMA 23 36v (24v-50v) 2 newton-meter (285oz in)) closed loop integrated steppers. $123 each. so worth it.
08:01 PM Cromaglious_: stepper, encoder, and driver is all in one... you connect it to the power supply and you're breakout board or controller.
08:01 PM Cromaglious_: HighInBC, spend the money on a Mesa setup then.
08:01 PM Tom_itx: agreed
08:02 PM Cromaglious_: spindle, hands down, get a VFD (Variable Frequency Drive) brushless spindle. DO NOT GET A BRUSHED MOTOR spindle
08:02 PM HighInBC: I will read up on it, this looks like a good starting spot: http://www.cnctablebuild.com/mesa-setup-part-1-hardware/
08:03 PM Tom_itx: seems like all the spindles you see are high speed for routers
08:04 PM Cromaglious_: I highly recommend those steppers. If you go with open loop stepper... you have a big chance of loosing steps.. and then you part is toast usually...
08:04 PM Tom_itx: have you seen any lower rpm with decent torque?
08:04 PM HighInBC: are tehre any more general CNC irc channels?
08:04 PM HighInBC: I do hate to get off topic
08:04 PM Tom_itx: probably, none i'm aware of
08:04 PM Cromaglious_: Tom_itx, HighInBC is doing wood and plastic.. high speed is fine.
08:05 PM Tom_itx: i know, i've been wondering that for a while though
08:05 PM Cromaglious_: HighInBC, there are other channels, though this is as generic as your gonna get. Most of us aren't haters...
08:05 PM HighInBC: good to hear
08:06 PM CaptHindsight: beware of cheap 3040-ish routers
08:06 PM Cromaglious_: I have, Mach3, Linuxcnc, Smoothieware, Marlin (arduino), grbl... mostly use linuxcnc
08:06 PM HighInBC: I see a poor signal to noise ratio when it comes to shopping for these things. So many listings have missing info and I pretty much discount those as anything left unsaid will probably be undesirable
08:07 PM SpeedEvil is now known as Guest20972
08:08 PM CaptHindsight: https://imagebin.ca/v/2TYvESEACWSs had to rework all the the ones I got from Automation tech
08:08 PM Cromaglious_: do not get a 3040 with an integrated 52mm spindle mount ala http://www.ebay.com/itm/CNC-Ballscrew-Desktop-3040-Router-Engraver-Milling-Machine-frame-with-52mm-Clamp-/252826423524
08:08 PM CaptHindsight: https://imagebin.ca/v/2aq2qZUtbOIM
08:09 PM CaptHindsight: https://imagebin.ca/v/2aq3eWhTxbGY
08:09 PM CaptHindsight: https://imagebin.ca/v/2apzmk7rpwvC
08:11 PM Cromaglious_: This is an OK one.. Ballscrew mechanical only.. Need couplers, steppers mounts, steppers, electronics, spindle, spindle mount, drag chain
08:11 PM HighInBC: I can pay more if the shop accepts bitcoins lol
08:14 PM CaptHindsight: look at the fixity of the ballscrews
08:14 PM CaptHindsight: do they have threads and nuts on the ends to set the preload?
08:15 PM CaptHindsight: http://www.machinedesign.com/linear-motion/importance-ballscrew-end-fixity
08:20 PM Cromaglious_: X and Y do, not Z
08:21 PM Cromaglious_: X and Y use the couplers on the stepper end for preload, nut on the lee end
08:26 PM CaptHindsight: http://www.machinedesign.com/industrial-automation/what-s-difference-between-consultants-and-house-engineers
09:02 PM Cromaglious_: consultant will tell the company to spend money, house engineer won't
09:03 PM Cromaglious_: house engineer will keep current equipment running, consultant will say to buy new
09:29 PM BitEvil is now known as SpeedEvil
09:33 PM Cromaglious_: damn wifi falling off...
09:41 PM Cromaglious_: laterz going home
09:57 PM tiwake: now that is some equipment https://www.youtube.com/watch?v=tEF2erBBVZ4
10:03 PM tiwake: heh I don't see any safety glasses... that is an old video
10:11 PM CaptHindsight: bicycle bandsaw https://www.youtube.com/watch?v=NTA775zCj4k
10:13 PM CaptHindsight: I don't want to be around when any of those blades come loose
10:19 PM SpeedEvil: Also, that's a motorycycle bandsaw.
11:26 PM cncnoob: Hey guys, I just purchased this spindle
11:26 PM cncnoob: https://www.aliexpress.com/item/2-2kw-spindle-kit-220v-380V-80mm-2200w-CNC-milling-spindle-motor-2-2kw-inverter-80mm/32720250683.html?spm=a2g0s.9042311.0.0.aT7fZX
11:26 PM cncnoob: I'm going to mount it to my Harbor Freight 44991 Mini Mill
11:27 PM cncnoob: https://www.harborfreight.com/two-speed-variable-bench-mill-drill-machine-44991.html
11:27 PM cncnoob: You will see in that first link that the kit comes with a clamp. This clamp. I purchased an extra one so I will have two clamps holding my spindle
11:27 PM cncnoob: https://www.aliexpress.com/item/80-mm-spindle-clamps-bracket-carving-machine-clamp-motor-lathe-chuck-match-use-80mm-1-5KW/2053326885.html
11:29 PM cncnoob: I'm going to need a piece of material to mount those clamps to, then that piece of material will mount to the back half of the existing spindle housing
11:29 PM cncnoob: this piece
11:29 PM cncnoob: http://littlemachineshop.com/products/product_view.php?ProductID=1498&category=
11:29 PM cncnoob: I
11:29 PM cncnoob: I've been pricing out metal to make the piece I need and it isn't cheap. To make what I want the raw stock would be like $350
11:30 PM cncnoob: My question is, can I use concrete or some concrete/epoxy combo?
11:31 PM cncnoob: I've seen people making entire machines out of the stuff, but no where have I found any specs of how precise a machine made out of concrete is.
11:31 PM cncnoob: https://www.youtube.com/watch?v=-0Cn0WRXPKs
11:34 PM CaptHindsight: I use polymer granite to make machines...
11:34 PM CaptHindsight: the problem is how does somebody with little to no experience make polymer granite components?
11:37 PM cncnoob: Trial and error?
11:38 PM cncnoob: I was hoping it would come in a bag, but it looks like most people are mixing their own polymer granite
11:39 PM CaptHindsight: how to make square forms?
11:39 PM cncnoob: Is that a trick question?
11:40 PM CaptHindsight: truly square not just a block
11:40 PM CaptHindsight: it's more complicated that it might appear
11:40 PM CaptHindsight: that/than
11:41 PM cncnoob: I would assume I would make a form out of wood or or the like then machine it square
11:41 PM CaptHindsight: there a several year thread on cnczone about polymer granite
11:41 PM cncnoob: Yeah, just started reading the clifnotes
11:42 PM CaptHindsight: http://www.cnczone.com/forums/epoxy-granite/30155-epoxy-granite-machine-bases-polymer-concrete-frame.html
11:42 PM cncnoob: I'm surprised someone hasn't started premixing the stuff and selling it as a "just add water" mix
11:42 PM CaptHindsight: I haven't
11:43 PM CaptHindsight: and why is what I've already asked you
11:43 PM cncnoob: The goal here is also to come in cheaper than what it would cost me to buy the metal stock
11:43 PM CaptHindsight: you just don't shake and bake it like chicken
11:43 PM cncnoob: how does someone with little to no experience make polymer granite components?
11:43 PM cncnoob: humm
11:44 PM CaptHindsight: plus you can source small gravel and sand locally
11:46 PM cncnoob: It is sounding like I'll probably just pony up money and buy the metal. Polymer granite is a project all of its own and that is for another day