Ok, what went wrong?

[Vinny]

Now this is one butt ugly cut. The pic actually makes it look better. So what did I do wrong? Plasma cut (pilot arc 50A), about 70 PSI. While cutting it was trying to weld itself back together. Consumables (and cutter) are new, but to plasma cutting, so am I. Not following the line was all me, I should've used a straight edge cuze the line got hard to see. The steel is 4x4 5/16" thick.