Homemade, cheap, plasma CNC

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04 Jan 2022 11:52 #230747 by RNJFAB
Replied by RNJFAB on topic Homemade, cheap, plasma CNC

This is the error I got updating.
 
That looks like your internat connection may have an issue.
The Buildbut has hung for several hours so there won't be much in the way of updates in any case.
buildbot.linuxcnc.org/buildbot/waterfall

Thanks Phillc54,

so no updates for a while then? 

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04 Jan 2022 12:03 #230749 by phillc54
It looks like it is up to date now.
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06 Jan 2022 11:04 #230936 by RNJFAB
Replied by RNJFAB on topic Homemade, cheap, plasma CNC
Tonight's problem, brought to you by the bloke in the shed who still has no idea.

When I first zero the machine off then open a cut file I get this.
 

Then if I zero on the laser button (I created)
 

Now if i close the file and reload it (and any file after this) it will always setup like this
 

I have tried to re home and zero, however every time i load a file it will align like this.

What have I done????
Attachments:

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06 Jan 2022 11:11 #230937 by phillc54
What is your laser touchoff code?
 

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06 Jan 2022 11:14 #230938 by rodw
Replied by rodw on topic Homemade, cheap, plasma CNC
Sometimes linuxcnc's persistent g code variables get corrupted, particularly when setting up a machine.
It has not happened to me for a long time.
You could try deleting metric_parameters.txt in your config folder.

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06 Jan 2022 11:19 #230939 by RNJFAB
Replied by RNJFAB on topic Homemade, cheap, plasma CNC

What is your laser touchoff code?

BUTTON_7_NAME = ZERO ON\GREEN
BUTTON_7_CODE = G92 X0 Y0 \ G0 X-69.533 Y9.724 F800 \ G92 X0 Y0
BUTTON_8_NAME = ZERO ON\RED
BUTTON_8_CODE = G92 X0 Y0 \ G0 X-58.064 Y25.190 F800 \ G92 X0 Y0
 

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06 Jan 2022 11:33 #230942 by RNJFAB
Replied by RNJFAB on topic Homemade, cheap, plasma CNC

Sometimes linuxcnc's persistent g code variables get corrupted, particularly when setting up a machine.
It has not happened to me for a long time.
You could try deleting metric_parameters.txt in your config folder.
 

Thanks Rod, I couldn't find this.

On a different note,
Could you let me know how to generate a g code with out the material settings? I have all my tools saved into QtPlasmaC, however whatever tool i set when creating the g code in sheetcam, is the one it will always use.

Cheers

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06 Jan 2022 22:11 #230991 by snowgoer540
Try this button code, it ought to do what you're after (at least it did in a sim here :) ):
BUTTON_7_NAME = ZERO ON\GREEN
BUTTON_7_CODE = G10 L20 P0 X69.533 Y-9.724 \ G0 X0 Y0
BUTTON_8_NAME = ZERO ON\RED
BUTTON_8_CODE = G10 L20 P0 X58.064 Y-25.190 \ G0 X0 Y0

Without seeing your g-code, assuming you're using the sheetcam post, if you remove these two lines from your g-code, you should be able to run whatever material is selected in the drop down above the graphics preview window:

(note that the lines may not be exactly this, and that XXX is the material number)
m190pXXX
m66p3l3q2 

That ought to do it, but be sure to report back!
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06 Jan 2022 22:12 #230992 by snowgoer540
I meant to note that while you can run it with any speed, any kerf width compensation done in the CAM software will not be updated, and so the size of the cut material may/will vary by the size of the kerf.

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06 Jan 2022 22:47 #230993 by phillc54

I meant to note that while you can run it with any speed, any kerf width compensation done in the CAM software will not be updated, and so the size of the cut material may/will vary by the size of the kerf.

That is how I run my table, I only do garden art stuff on a limited size of thicknesses so kerf width doesn't bother me at all.
 

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