RFI in metal working

[Alex Fraser]

TIG welders and plasma torches can have a feature used to help start the 
arc with out touching the metal.  It is called HF start.  In this video 
on YouTube a guy is building a a CNC table for a plasma torch.  He runs 
into RFI big time on his first build. I've read that you must ground 
your TIG welding table to avoid getting shocked and he mentions that and 
how he grounds his new CNC table.  I have yet to figure out the 
frequencies that these machines use.  I would like to avoid welding the 
end of anything that looks like a half wavelength at that frequency!

https://youtu.be/9iv2rWcOocc?t=262
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.amrad.org/pipermail/tacos/attachments/20211208/98aa9efe/attachment.html>