New Autoleveling PCB software

**Daedelus** · 13-04-2013

Hi Geoffrey, when you say skimming the table, I presume you mean milling out an area to make it flat? In the video, you can see I have already done just that (the MDF sacrificial layer has been pocketed 1mm) but it still was not good as the first pic shows. But yes, you wouldnt even need to skim / pocket the table using this software.

In fact, the Z height is calculated using a bilinear interpolation technique which gives a good result. You could probably get a good result with much fewer probe points (depends on the board size and quality). I would need to experiment to find out.

best,
James.

**GEOFFREY** · 13-04-2013

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.

**Daedelus** · 13-04-2013

Originally Posted by GEOFFREY

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.

**GEOFFREY** · 13-04-2013

James, the way that I work and most pcb machines is that the tool length is always constant due to setting a collar on the 1/8th shank using a preset press. G.