Jazzcnc,
thanks for the info on the cutter radius. It was a 3mm rad and a 6mm cutter. I will alter the drawing for the inner radius corners for the next one. I have alot to learn about milling, this is not something I would have to worry about in profiling.
Your right, its great watching the machine cut its own parts. I wonder if I can get it to build a replica of itself:lol:

Ian