@andymidtf - Very interested in this topic. I'm doing a DIY CNC Plasma table and was planning to use a spare Mach3 controller. Now, I have 2x 3DPs with DuetWiFi (Duet 2 series) controllers and a spare controller. I recalled that some Duet users were using CNC router and CNC laser, so I did a quick search and found this. This post is a tad old and I'm wondering what progress you or other's have made. At the moment, I just upgraded my torch to a non-HF blowback model. Approx 4-5 years ago I tried the HF Arc Pilot torch with Mach3 and EMI was too much. So, giving this a go.. one more time.