Calibrating a delta printer manually is tedious. If you want to try it, follow the steps I list at [
miscsolutions.wordpress.com] but adjust the corrdinates and M666 values in config.g to suit the Fisher. The fast least-squares automatic delta calibration code that I added to RepRapFirmware spares you that. No other open source 3D printer firmware has anything like it, which is why there are manual calibration guides for other firmwares.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
