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I have to ask, why are you editing/saving gcode?
Does sheetcam output the plasmac-feed-rate ?
See if you can edit the post processor to add this:as a header/preamble.

Shot in the dark here...

When I switched my spindle encoder to a fairly high resolution version I ran in to intermittent problems with the signal.  Turns out Mesa cards have a filter on the dedicated encoder inputs that can be adjusted:

Setting it to False sorted things out in my case.

I've no idea if this is causing you a problem, but it's a easy & free thing to test.

After that, next suggestion would be to remove all the PID loops and other stuff from the spindle motor control loop.  Run the VFD open loop, variator set to one position.  Take everything that changes spindle speed out of the equation and do another series of G33 tests.

I don't know that the spindle speed variations are affecting the threading, but it cant be helping things.  Listening to that WAAAHH-uuhhhh-WAAAHH-uuhhhh in the video was driving me nuts

Thank you for your support. One more silly question: how do I get updates? By updating to the latest version 2.10 of LNC?

I am glad it worked.

It appears I'm on my own... again. So far nothing worked to get a repository to update LinuxCNC. So I said f-it and completely deleted the partition and reinstalled linuxcnc completely from scratch. I am gad I did.  The new installation resolved several issues. Most importantly, the editor in Linuxcnc that nothing I tried worked to get it resolved, is now resolved.
 
 

Muzzer wrote:

Elegoo Centauri Carbon

One of my friends has one, and another has both types - a single color and a multicolor, i told them both to buy them, despite me having 4 or 5 or 6 of Voron 2.4R2, as the price is so low that you literally can not buy just the parts for it for that price. Voron have costed me form 600-800 Euro a piece, and a lot of time and effort, so if i started today, i would for sure go Elegoo.
Aaaaand they also are effin up with the open source licenses, but there were some positive moves a while back.
Hopefully i do not regret the advice given, again.

Sorry I meant to say Freecad version 1.1.1 and the CAM workbench, into Linuxcnc.

Hi All 

Thank you to everyone who commented.

Much appreciated indeed  

I re-wired some of it , that didnt help, but at least it confirmed that what I had seemed reasonable, which was good to know.

The scale with a minus sign did provide another option, which I used , the comments also provided a better understanding that I might have been changing the same thing over and over just in different ways and complicating matters.

In the end I iterated through as many possibilities as possible, and eventually it both homed, and it jogged in the correct direction.

I milled a square out of a piece of plywood (using Linuxcnc v1.1.1 and the CAM workbench),  and the machine seems to work fine. 

I am very greatful to everyone who contributed through this forum in order to get this machine going, and to keep me going too
 

Hello, good afternoon. Could someone help me load the .bin firmware onto the EC500 RT1052? I've tried several programs and commands, but without success. I have the Chinese Stlink V2 and a Raspberry Pi Pico.

I got one of these at Xmas and it's been excellent. It's often described as a Bambu clone. Currently £239 in the UK, arrived in 2 days and works locally without the need for internet or their Elegoo cloud. 320C, heated bed, wifi, webcam, PLA/PETG/ABS/ASA/TPU/PET/PC/PA etc. They do a multi colour version for £398 but I'm not a tart. I model stuff up in Fusion, export as STL and use the Orca slicer that supports it out of the box, controls it over wifi and doesn't seem to need any fiddling about.
Elegoo Centauri Carbon

That type of instruction executes correctly; the problem only occurs when executing one of type o<XXXX>. I tried executing it from the MDI in the form o<xxxxx> call and it also gives me an error.

Muecke wrote:

1. Der Motor hat eine integrierte Haltebremse.
   Benötige ich dafür zusätzlich ein 24 V DC Netzteil, um die Bremse überhaupt ansteuern bzw. lösen zu können?
   
   
   
   Ja, du benötigst noch ein separates 24V Netzteil um die Bremse zu lösen.   

Edit: Und natürlich ein entsprechendes Relais.

Dis-respectful pieces of shit!!!
Their whole eco system and the money making machines are centered and solely enabled by open source software, yet here they are threatening people.
I feel ashamed that once upon a time i told my brother (in US) to get a printer from them.

What DC servos? Analog or step/dir like Gecko?

Just figured it out. I had a file called custompyvcp it was looking into for the ztouch code. Whoops. Thank you again for your help!