rm.

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<IMG SRC="http://boim.com/img/mountedNeedleProbe.jpg" width="20%" align="left">
<IMG SRC="http://boim.com/img/needleProbe.jpg" width="20%" align="right">
What if we fitted the printer with a CNC probe needle sensor,
and searched probes of a precision machined plate mounted on top of the print
bed like this one.
We could perform interactive bed probes, searching for the
bottom of the calibration holes.
This would give us printer settings at known, complete 3D XYZ positions
to feed into a calibration