Prusa Mendel Caliper Clamps for Calibration

thingiverse

Inspired by "thecrazy's" fantastic work, I created personalized caliper clamps to enhance my Mendel accuracy. Despite some imperfect parts, photos reflect the instructions below. Requirements include 10 M3 nuts, 2 M3 3.8mm heatset inserts or nuts for filament holder, and 8 M3 x 15mm screws. Optional are 10 M3 washers. To assemble: print bar clamp, back half, filament holder, and two front halves; insert nuts/heatset inserts with a soldering iron; join front and back halves around calipers using screws; attach clamp to the Y-axis frame member. Next, home the Y-axis, zero calipers, jog 100mm, repeat, average results, adjust firmware if necessary. For X-Axis, attach clamp to Z-axis smooth rod, home and extend calipers, zero, jog 100mm, repeat. Finally, for Z-Axis, attach above extruder, measure like Y and X, add filament holder and front halves, align X-Axis for straight filament feed, feed through holder into extruder, clamp using set screws, extrude 1-2mm to remove slack, zero calipers, and extrude in 10mm increments. Repeat process until precision exceeds caliper capabilities.