Homemade, cheap, plasma CNC

Thanks Rod,

Took a bit but we got there. Big Thanks to Rod for guiding me through getting the connections all right. I ad some of the code muddled up, rookie error !!

All linked in and now working. Woo Hoo !!! Ohmic sensing is all connected and working correctly.

I'll post updates this week with where the CNC is at. 

 So it's all hooked up and running. Small issue when I powered up the Plasma. because the Razor Cut 45 torch doesn't have an extra shield, I was using the nozzle to give the signal feed for the ohmic sensing. This obviously stopped working once the plasma was powered up.So I have made a small set of spikes that are the same height as the nozzle with an extra wire for the ohmic sensing and it all work sweet. Thanks Rod for all the amazing help and support to get this running. So there are only 2 more upgrades to do and this CNC will be finished (if there is ever such a think as finished), Better water supply/filter/drain for the water table





       

So I finally can upload videos to youtube(except when it rains and the internet stops working).
First up is one of my Unicorn signs being cut.

youtube.com/shorts/se2rPLs3YoI?feature=share

 

When the UniMig RazorCut45 tips are starting to wear out (or you get dodgy, non genuine, even this they claim they are, but you know they aren't because they don't fit as well as genuine ones). I get this. The torch does it's probe but is unable to get an arc ok signal. 

Sometimes I need to close the gap to get the arc ok signal and the cut to continue. this is how I manage to extend some life from the tips when they really need to be changed.

 

Subbed.