I run a Thermal Dynamics 300 Ultra-Cut Plasma Cutting System with a Burny controller and Kaliburn iNOVA height controller. I use FastCAM, FastNEST, and Solidworks. But, I've only been doing all this for about six months, and I'm otherwise completely new to the metal fabrication industry.
In an effort to generate further business on the machine, my bosses started putting more emphasis on detailed art cutting. So, we began experimenting with a simple Texans football logo outline drawn in AutoCAD. (Don't ask why my boss likes the Texans. I can't explain it. 'Course, Dallas isn't much better lately.) But, we're having some problems getting rid of the pierce hole left on inside cuts. Because they're simple profile lines to accentuate the bull logo, they are very thin, even in full scale, and the diameter of the pierce hole is often twice that of the kerf on the profile lines (.071" on 1/8" thick mild steel). We've tried reducing our pierce hold down to virtually nothing, and even nothing at all. But, the overly large pierce hole remains. I've noticed that before the pierce hold delay, there is an 'arc-on delay' reading on the Burny. I'm unsure as to whether or not this is the source of the problem, or, if it is, how I might reduce, or remove it.
Any suggestions?