How about windows Notepad? G81 is modal, write the first hole by had to get
your R Z and F parameters. Then cut and paste all the other lines into the
file. Next, use find and replace to to put in the X and Y in every line.

Karl



"oparr" wrote in message
news:_7oge.145$bO4.126@trndny02...
Hi,

Any recommended software (preferably free) that takes X,Y coordinates from
an Excellon file and creates G81 drill cycle code blocks? I can write a
program to do this but why reinvent the wheel?