Terry,
I remember you posted some time ago about having an "automated potentiometer" on your plasma cutter and you had it reducing the current at corners, etc. You said about 95% of the time it made no difference to the cut. I've often had problem on outside corners on thicker steel, and also where a lead out crosses over a lead in. I get tabs left. When the lead out crosses the lead in the arc "jumps" over to the steel on the other side of the lead in, leaving an uncut tab. Outside right angle corners have had it too, but it's more weird because the arc "RE-PIERCES" around the corner, again leaving a tab.
I was wondering if slowing down at corners may help this and by reducing the current a little bit it won't blow the kerf out noticeably wider.
Rob,
thanks for that info. I've downloaded from that link plus downloaded the other two pdfs on the protocol.
Keith.