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Plasma cutter for CNC

PostPosted: 22 Feb 2016, 19:05
by galuu
I am making a CNC plasma cutter. What are your experiences with hand held plasma cutters? What low price cutters would you recommend? I would need one for cutting from 1,5 mm to 5 mm thick sheets. Thank you

Re: Plasma cutter for CNC

PostPosted: 23 Feb 2016, 10:18
by Support
How low price are we talking here?

Re: Plasma cutter for CNC

PostPosted: 23 Feb 2016, 20:09
by galuu
I was thinking about something from 400 to 600 €

Re: Plasma cutter for CNC

PostPosted: 24 Feb 2016, 14:46
by Support
Low budget plasmas are know to cause quite big problems with its EMI.
I cannot guarantee nothing, but the experience that we have with cheap plasmas, we would not recommend it.

Re: Plasma cutter for CNC

PostPosted: 11 Jan 2018, 20:38
by dmatta
Hi pleace ned help recently bought a plasma machin but wen try to run the plasma, the usb disconect, some one to have an answer about this problem.

apereciate to much some wibe me any idea for fix this.

Re: Plasma cutter for CNC

PostPosted: 24 Jan 2018, 09:22
by Support
All symptoms that you described earlier are indicating problems caused by a electromagnetic interference:
https://en.wikipedia.org/wiki/Electroma ... terference

This occurrence interferes with the USB communication, which as a results drops and communication between controller and PC is terminated.

You see, electro motors, VFDs etc...are sources of EMI and therefore your wiring and other devices should be properly shielded and filtered. You would need to use shielded cables and use line filters for VFD. Also controller needs to use external power supply for its stable operation.
http://planet-cnc.com/wp-content/upload ... lerMk3.pdf (page 32)

Try this:
run your machine but without the spindle turned on. Try just air cutting your piece so that we see if spindle /plasmaand its interference is to blame.