Thanks! Exactly what I was looking for. Still takes a while to get an estimate but a heck of a lot better than simply letting the program run offline. FWIW: I tried the following program as an initial test and Mach3 1.84 never finished it. Seemed to get stuck around line 966. I only tried the simulate mode.
http://www.industrialhobbies.com/Pro...eaf_clover.txt