I actually did this project on Sept 19, the second day I had my Supercut 50P.
I used my PA140ST in TIG mode and SuperCut 50P. I was using a 3/32 2% thoriated with a #5 cap. Amperage was 140. Filler rod was a 1/16 ER70S2. The metal used was 6x4x.250 brick lentil.
I used a piece of aluminum as a guide to cut the lentil. Amps were at 50 and pressure was approx 60. Cut like butter. I then changed caps for one without the guide and freehand cut at a 45 (just because it was thicker.... ) It measured .58 - .59 thick. I then used the plasma cutter to mark the holes and then drilled them on the press. All this drag tipping at 50 amps took a tole on the consumables... I then set the 140 at max and tacked the plate on. Once everthing looked good, welded top and bottom.
I haven't had time to paint the bracket yet so it is already starting to rust.
This was a easy project and didn't take long at all thanks to the SuperCut 50P. I am very happy with the results.