New build with recycled parts on a ridiculous budget 120cm*60cm work area

[Desertboy]

I've got it to run the splash screen ;)

https://youtu.be/JEo0zH5BMoM

Running 2.7 at moment with now working home switches, am going to upgrade to 2.8 but this was a fresh install so thought I might as well have a go.

I wasn't touching off each axis I assumed it was only for the Z causing most my errors.

My dimensions are wrong and not sure why will have to investigate tomorrow but when I move 1.2m I'm only really moving ~85cm so need to do some head scratching.

My microsteps are set to 8 and the ballscrew pitches are correct, it's set to 1:1

I also have the emergency stop button but unsure how to wire it up no instructions of course with the super cheap chinese stop button but I never expected anything more lol.

I did have it running a couple of weeks ago with Mach 3 but as soon as my mate went Oz I deleted the dodgy pirate and installed linuxcnc he's back in a week so glad I've got it working before he got back lol, he's a Windowsphile.

[Desertboy]

Bought a dust shoe
http://www.ebay.co.uk/itm/80mm-White...72.m2749.l2649

Think it's the same as you linked to just different colour, but UK ship although slightly more expensive.

I'm going to use a vacuum cleaner to suck on a cyclone wondering if I can use 100mm fittings on the cyclone to run a 100mm hose to the dust shoe or should I make an adapter so I can run a smaller hose to it.

Hmmm decisions.

[Clive S]

You did realise you can buy those dust shoes with different hose sizes

[Desertboy]

You did realise you can buy those dust shoes with different hose sizes

No but I would have bought 100mm anyway so I can change to a proper extractor when one comes along cheap enough ;) After all if I can't make a 100mm to 40mm adapter with my machine I'm in trouble lol.



Router is definetely setup wrong, I checked the stepconf and it's 8 microsteps and 5mm for my X and Z, 8 microsteps and 4mm for my Y. I also double checked the am882 pdf as well for jumper settings so really unsure what's going on but too cold where the router is so had to come home. More layers tomorrow ;)

Got to be something trivial.

[Desertboy]

Jumper setting for my AM882's they're all set the same, I hope they're set to autotune SW4 off/on/off twice in 1 second and 8 microsteps, not sure why I'm out dimensionally.


Also thinking about clamping

Thinking about cam, although I can CAM simple piecs of fusion most of what I designed to make is in 50+ pieces so looking for something to ease placement of the 50 pieces on a work piece, 2 sided machining and simplifiy the whole process.

I think it's a shoot out between Vcarve pro and Meshcam, leaning towards Meshcam at moment as it's $250

[Desertboy]

Machine is exactly 1/2 out (Not sure where I got 85cm from lol) changed to 1:2 ratio and now it's spot on but I would like to understand why.

At least it's working correctly now and I have 70cm of usable travel on the Y can stretch to 75cm, 120cm*70cm*12cm can live with that ;) So so glad I didn't buy an Xcarve now.

This time the right size and 4 times quicker so it doesn't rub the wood and smoke lol


I'm scrapping the vac bed idea (For now) in favour of a decent clamping solution as the cost of the woods I'm going to work is very high so I cannot afford slippages.

Toying with getting Vcarve Pro (Or meshcam) but will have to wait a month so I'm going to play with fusion CAM and the trial of Meshcam for now.

[Desertboy]

Clive what are your linuxcnc stepper driver timings?

http://wiki.linuxcnc.org/cgi-bin/wik...r_Drive_Timing

I used the ones for EM806, what does rising/falling edge mean I see there's some mention in the manual to do with jumper 8.

[Clive S]

Clive what are your linuxcnc stepper driver timings?

http://wiki.linuxcnc.org/cgi-bin/wik...r_Drive_Timing

I used the ones for EM806, what does rising/falling edge mean I see there's some mention in the manual to do with jumper 8.

The standard default driver settings are fine. I find it very difficult to follow sometime because you keep changing the version of Linuxcnc so are not consistent with your questions. You are also jumping all over the place and seem to be trying things at random which does not help. The trouble with linuxcnc is that there has been some very big changes in the last year and the documentation has changed starting with V2.7 I suggest you get the v2.8 master (because you have two motors) and stick to it.

Please don't take this the wrong way

[Desertboy]

No worries, now have upgraded to 2.8 and got 4 joints configured, Y is linked, X homes, one of the Y switches works, one doesn't. Have control of the machine can run code.

Got driven home by the cold spent a good 6 hours with the machine but no heating and in a large industrial unit it took it's toll on me lol.

Hopefully can work out how to configure my second homing switch have the .ini and .hal with me this time to post up on linuxcnc ;) so hopefully can work it out tonight I was getting close when I left.

This is how close X gets when homed now (I have it click the homing switch and travel another 50mm)

If you see the spacer at the top is slightly loose it's because the bolt's too long by 0.5mm need to strip the Z off and shave the bolt down to sort but need to order the bits I need to add grease nipples to the Hiwin's so I can do at same time. The actual spindle is still rock solid but obviously going to sort out.

And this is how close the Y gets when at maximum travel +(700mm) although I still have 5cm to play with on the other side of the bed I think 70cm travel sounds good. It's freaky watching it plough full speed towards the end to then stop so accurately and quickly so close to the end.

Now I've got homing working

[Clive S]

Good work, follow rodw with his amendments I think they are correct. Just one point I noticed in the ini file is the z offset I think you have it at 0 it might be better just off 0 so as to not have false triggers.