Hi Rob, I'm running a much smaller table than you do but based on Myplasm as well. Works quite well indeed. I run the ohmic combined with a floating head. No special additives in the water though. I am sure you know this but there is a 'blowout' option in Myplasm for the ohmic. It is under the special functions tab. I think it triggers the plasma (on/off) ever so briefly so that the air starts running first. Only then will it start probing. Hopefully the air has blown away any conductive water/particles by then. Worth a try... Nice setup and I am enjoying the vids! Best, Robin
Hi Rob, that's very interesting about the additive causing you problems. I run an ohmic sensor and have the occasional issue with water getting around the torch tip and my sensor, but just lately, it's been fine. I have been planning to install a low pressure air purge 'thing' to help keep the eater away from my ohmic sensor, but haven't got around to building it yet. I have reduced the water level in the water bath from 5mm to 10mm below the top of the bath, and I think that might have helped a bit. I know your water level is even lower than mine, so maybe that's not going to help you. You can connect a 50k ohm potentiometer in series with the ohmic sensor to help reduce its sensitivity, so maybe that's something to try. I do like the floating head unit that you've built....'cobbled together out of bits and pieces laying around the workshop'...what other way is there!!
Hey Rusty Thanks for the 50k pot tip. Hadn't thought of that. May do the myplasm dual floating and ohmic setup. The air purge doesn't seem to work well with the hypertherm. Looking forward to seeing your air purge setup though. British shed building 😆
Does the air blow out function not work? I haven’t used the special function yet but was happy to see it in there in myplasm software settings? I might have put a float head on mine if your having issues.
