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First plasma table build

CarterKraft said:
Belt tracking is kicking my ass...
Half ass attempt with not real tight belts but they kept riding up or down the stacked skate bearing idlers.
Pondered on it a bunch but I think I need to get the belts setup correctly and properly tensioned then work on the idlers, either adjustments or 3d printing smooth flange roller housings to try and keep them captured.
There are flanged 608 bearings I could use too.
Click to expand...
1694629792537.png

I use this type of pully, never had a tracking issue in 10+ years
the big pully doesn't have a flange on the sides and it tracks fine
 
That's what I have on the stepper but just skate bearings on the idlers.
I think the stepper is not parrallel to the tube so everything is out of alignment. I tried "massaging" the idlers and the stepper but sort of lost the desire to fuck with it.

1694630199042.jpeg
 
CarterKraft said:
That's what I have on the stepper but just skate bearings on the idlers.
I think the stepper is not parrallel to the tube so everything is out of alignment. I tried "massaging" the idlers and the stepper but sort of lost the desire to fuck with it.

1694630199042.jpeg
Click to expand...
Looking at it from this angle I think I see the problem :homer:
 
looks like a nice biuld. my first plasma setup used roller bearings on steel as a track did okay as long as i was consistent with keeping the surface super clean.
 
carslut said:
looks like a nice biuld. my first plasma setup used roller bearings on steel as a track did okay as long as i was consistent with keeping the surface super clean.
Click to expand...
Thanks I'm trying.

Once I have the cnc part down I'll feel more confident about the axis improvement.
This size table 19mm round linear rails would be fine I bet.
 
Belt tracking resolved thanks to RustyC.


Got the minimum limit+home switches on all the axis. Added those inputs in pncconf but then something happened and I started getting errors from LinuxCNC... I made a new config and that allowed the limits to work but I am still having trouble getting it to home correctly.

I basically have no idea WTF I'm doing :homer::lmao:
More research tomorrow.

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1000006645.jpg
 
Good news on the belt. :beer:

You are still miles ahead of me. Mine is currently a tube frame with water pan and a box of gizmos that I'm not 100% sure what they do yet.
 
RustyC said:
Good news on the belt. :beer:

You are still miles ahead of me. Mine is currently a tube frame with water pan and a box of gizmos that I'm not 100% sure what they do yet.
Click to expand...
This might be the hardest thing I have ever done.
:barf:
I'm still optimistic :laughing:
 
I was looking into the converted laser table or even the Langmire one (now like 2500 though, was $1k when I first found them)

But found a place called cut send cut or something like that.

4 6 lug to 10 lug adapters out of 1/2" plate would cost me around $200 there. I can't even buy steel for that.
 
AKnate said:
I was looking into the converted laser table or even the Langmire one (now like 2500 though, was $1k when I first found them)

But found a place called cut send cut or something like that.

4 6 lug to 10 lug adapters out of 1/2" plate would cost me around $200 there. I can't even buy steel for that.
Click to expand...
Yeah I use sendcutsend too, really nice to be able to get higher precision stuff when needed.
 
I got all the limits setup, Z home/float and all the axis one proximity switch.

But I am getting my ass kicked trying to set up the combined home minimum limits in PNCCONF.
I hear I need to quit fucking with PNCCONF and modify the HAL file but I am not confident enough yet to know WTF I am doing.

Anyone offer some insight?


1695057035700.jpeg
 
No thanks to you fuckers I got it all homed:flipoff2:

1000006755.jpg



Then I air cut a 6x6 square...
1000006759.jpg



Still a lot to do, connect plasma fire relay to mesa card and create voltage divider etc. for plasma arc voltage.
Not sure I want to even fuck with this Plasma cutter at all, it's a hf start non pilot arc. Probably just be the real deal if I get this to that point.

I'm gonna try the hynade 60a I think.
hynade CNC Blow Back Digital Air Plasma Cutter, Non-HF Pilot Arc Non-Touch Plasma Cutting Machine, THC Torch Height Control Enabled (CUT80NP) Amazon.com
 
CarterKraft said:
No thanks to you fuckers I got it all homed:flipoff2:

1000006755.jpg



Then I air cut a 6x6 square...
1000006759.jpg



Still a lot to do, connect plasma fire relay to mesa card and create voltage divider etc. for plasma arc voltage.
Not sure I want to even fuck with this Plasma cutter at all, it's a hf start non pilot arc. Probably just be the real deal if I get this to that point.

I'm gonna try the hynade 60a I think.
hynade CNC Blow Back Digital Air Plasma Cutter, Non-HF Pilot Arc Non-Touch Plasma Cutting Machine, THC Torch Height Control Enabled (CUT80NP) Amazon.com
Click to expand...
I had the same problem using the limit and home switches. I think it had to do with the dual Y axis, and I had to manually go in and had a "-" or remove a "-" or something stupid simple like that.... but it look me 10 hours to figure it out.

Cool to see it moving!
 
Exactly! like a combination of six different parameters to try and figure out.
I spent WAAYYY too long to get it working before asking for help.
 
CarterKraft said:
Exactly! like a combination of six different parameters to try and figure out.
I spent WAAYYY too long to get it working before asking for help.
Click to expand...

That is kind of a draw back to Linux is it can be hard to set up…. On the other hand it has virtually unlimited potential.

Now you have it set it the sucker will just simply work,
 
Anyone else looking at doing a hobby, 2x4 etc. table they have pans perfect for that at the HVAC supply houses.

This is a local company that makes them but this size should be available every where.

1000006789.jpg
 
Fuck me if I haven't had to create two more configs cause I keep bricking them...


 
Talon2006 said:
Always best to make a copy, and make only one change at a time.
Click to expand...
I finally figured that out I think. The last fuck up wasn't mine I don't think, it reported line 227 in Hal had 3 arguments and only needed 2, it looked like every other Hal file I had in that area, I wasn't even working in the hal?
 
CarterKraft said:
I finally figured that out I think. The last fuck up wasn't mine I don't think, it reported line 227 in Hal had 3 arguments and only needed 2, it looked like every other Hal file I had in that area, I wasn't even working in the hal?
Click to expand...
What are you trying to do?

I don’t think I had to do anything in the files initially.
 
I was just trying to dial in the axis home limit, accel stuff, wasn't even modifying the hal at all only the ini
 
1/8" x 2.5" strap seems unobtainable.
I bought 10' of 1/8"x3" to test with, it will work but will limit how close to the water level I can get the material.
Thinking about this now maybe I need to use 2" and lift my slat holder up... :idea:


I have been running all this so far with the steppers in open loop so I don't add too much complexity to the project at one time.
I have tried to switch the Z to closed loop and nothing happens when I flip the switch and it stops moving all together.
I figured my extension cable to GX16 or gx16 to driver patch cable was mis-wired so I have been ignoring this and working on other stuff.

I pulled the encoder cover off to attempt to verify the pinout and to my surprise it doesn't seem to be right.
I sent stepperonline a message, we'll see.



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Pulled the trigger on the Hynade CUT80NP, prime day deal $559 + 3 year warranty + tax was $675 got it yesterday and I started thinking about plasma torch.

Ultimately I'll probably buy a machine torch $200 but it got me thinking about torches and then I starting looking on AliExpress for complete torches and found complete knock off Hypertherm torch assemblies.

It looks like the Hypertherm torch housing and boy are the same from 45 up to 105 so I could get the Hypertherm consumables for the amperage range I'll be using.

Maybe not worth it?
1000007204.jpg
 
CarterKraft said:
www.altparts.com

Powermax 65,85,105

Powermax 65,85,105
www.altparts.com www.altparts.com

I tried the knock off consumables, they work but not for long
Click to expand...
higher the amps, the less they last

for example OEM consumables I can get 6 cutting hours out of a nozzle, knock offs I can maybe get two
@45 Amps

@85 Amps the electrodes will consume as fast as the nozzles
 
SomeGuyFromOlympia said:
higher the amps, the less they last

for example OEM consumables I can get 6 cutting hours out of a nozzle, knock offs I can maybe get two
@45 Amps

@85 Amps the electrodes will consume as fast as the nozzles
Click to expand...
So do you think it would be worth being able to use OEM Hypertherm torch parts?

From a $/hour price is it worth buying Hypertherm?
 
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