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Re: RepRap 3DR Delta printer Released

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When I talk about tower positions, I mean virtual tower positions. They may be wrong because of something of this is wrong:
  • actual real tower position
  • carriage dimensions
  • platform dimensions
Correcting for different diagonal rod length (i.e. all of them do not have the same length) requires changing the math for converting cartesian coordinates to delta coordinates.
It is interesting that Repetiers radius correction is not mathematically correct. It is easy to do it correctly. At least in Marlin. I doubt Repetier uses same different math for delta conversion. One of the difference is that Repetier uses integers internally so it can be quicker but will have sooner problems with bigger printers. People on google deltabot group also claim Repetier uses acceleration and speed limits for platform while Marlin uses them for carriages.

I used only a temporary mounted probe only. I do not think a permanent probe makes sense. My experience indicates it is needed only once when calibrating. Some people need to recalibrate after taking out the glass and putting it back or after transporting the printer. This was never needed in my case.

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