The Trafimet electrodes are just straight and seemingly the S series (which mine are) are blowback start as well.
The actual swirl ring is tiny in the Trafimet torch, about 14mm in dia and about 4.5mm thick with an internal dia of about 10mm. The holes I would guess are about 0.6 or 0.8mm in dia and there are 4 of them.
Made some progress with the THC. Denis asked me to video the axis moving under the test routine in the THC and he said it looked like it was using the accel set in motor tuning wher normally with the PP and other controllers it doesn't. To check it out I drastically reduced the accel and sure enough the moves were very slow in accel.
So he suggested I change my Velocity from 5m/min to 2m/min and change the Accel from 1000mm/s/s to 5000mm/s/s and see if it made a difference. It did, THC now is usable, it still jumps around constantly but it is probably under 1mm in total. I will do some more testing tomorrow if I get a chance or the weekend if not.
The plasma is going to be really handy though, today I had to make up a wee box from 4mm Alu, normally I would have hauled out the evolution circular saw and chopped a bit off the sheet, problem with doing that is it is never 100% square. Today I shoved the half sheet up on the plasma, wrote a quick bit of code to run 950mm in X, 180mm in Y then back on the X. Took about 30 seconds to do the cut and it was dead true
Think I will have to see if I can manage to do a few wee wizards for simple things like that as although hand coding is not hard it would be much quicker in a wizard.