Ohmic sensing with IPTM-60

A break-out box.
A car relay.
Break the arc start ground cable when sensing.
And ohmic sensing works with the IPTM-60.
No modifications to the plasma cutter.
Standard arc voltage reader used, I use my own THTIC2.
 
 

You may be interested in LCSC electronics/JLCPCB.

They offer tons of components, custom cables, PCB fabrication, and PCB assembly.

You could produce these on a largish scale.

Not really interested to produce and sell.
Would take so much time, time I want to spend to make new things.
And it's not so unique, it's a remix of existing ideas.
Quite convenient though.
I don't mind at all if you sell units, will only help people.

Schema here 
 

Unique inventions went extinct long, long ago.

All new inventions/creations are a remix or a knockoff.

New "Music" is all remixes and knockoffs too.