Quote Originally Posted by GEOFFREY View Post
Thanks Daedelus. Yes, I was asking if an unlevel (not necessarily uneven) table could be probed once and that information used to modify the Post Processor and add/subtract Z values for all future programs, not just for each individual program. Hope that makes sense. G.
Thanks Geoffrey, thats an interesting idea. Sorry, when you said PP I thought you meant "probe points" rather than "post processor". The problem is, by default, any information stored in GCode variables is lost for new sessions. In linuxCNC you can log stuff so I guess you could read the log file back in each time before starting a new job but then the Z information would be useless whenever you changed tool bit. Worth thinking about though, thanks.

James.