[tof1]

Made my first cuts today. Cut a 4" square with a 3" circle in the middle out of 16ga steel. I didn't clean it up and it was 98% dross free (pics below).

Here's the problems I can see:

1. There's a bit of taper.
2. The cut is jagged around the radius of the circle.
3. The corners of the square are rounded quite a bit.

Is there a common problem for any of these that I should try to fix first? I'm using Mach3, SheetCam, and I drew the file with AutoCad.