The pierce point will appear wherever you click on the part. If you click a line with the cross hairs of your cursor outside the part it will put the pierce point on the outside of the part and the opposite will happen if you are on the inside of the part.
To get the pierce point to appear on a corner inside or outside. Put you cross hairs near the corner when you click. If it isn't exactly where you want it undo and try again.
The mind of its own you are speaking of is most likely the auto cut path that plasmacam does if you click on the outer most lines of a drawing that has multiple cut paths on an interior of a part. To stop this, convert the innermost detail of the part and work your way out to the outside line. This way you can specify where you want the pierce points.
I attached a file showing the difference. The part on the left was converted to cut path by only clicking on the large circle around the items within. Plasmacam put the pierce points on the five details inside the circle. The part on the right I converted the details inside one at a time and put the pierce points where I wanted them, then I converted the circle around all of them.
To get the pierce point leadin's nice and straight like I have them. After you convert the detail press E (edit) and grab the end of the pierce point line and drag it where ever you want it. |