Hi Rufan

I found it advisable to always include the X & Y coordinates in the g83 instruction even if I had previously moved to the right XY position. Sometimes Mach seemed to forget where it was if many subroutine layers were involved. Of course, sometimes the g83 worked fine without the X & y parameters ...  I do a lot of air cutting first.

Cheers

Rufan,
We never found an answer to the G83 problem.
We have to work around the problem by using another machine.
The only answer I can think of is to wait for Mach4 or write your
drilling programme long hand.
Dennis

The only answer I can think of is to wait for Mach4 or write your
drilling programme long hand.

Yup, custom drilling programs work very well.

Cheers

Actually  some of the SUBs I used were better than the Canned cycles. For example a deep drilling sub did a rapid BACK to just above the drilled depth so you did NOT have to feed all the way back down as in the Mach canned cycles. I also put in a deep first pass to get to depth pecking.

Just a pain sometimes when you cannot use a stock canned cycle. Never had much trouble back on a 1mhz PC it only got qweird when I moved up to a 2.2GHZ machine. I believe a race condition existed at that point that was caused by software

(;-) TP

TP,
Thanks for that, constructive comments are appreciated.
Dennis