Diameter Calibration for Holes and Bosses on Replicator 2

thingiverse

This project tackles the issue of Arc Compensation in Replicator 2, which results in holes being printed smaller and bosses larger than intended. Aimed at through holes and press fit components, this issue is addressed by printing various diameter holes and bosses while measuring them with calipers. The data obtained is then used to create a calibration curve that enables more accurate hole and boss diameters during design by accounting for Arc Compensation errors. For example, when designing a 3mm hole, it should be designed as 3.38mm to print out at 3mm. An Excel file containing the measured data and calibration curve is available for download, or users can run their own calibrations for other slicers. Instructions are provided on how to use the corrections Excel sheet and make your own calibration by measuring actual diameters of printed holes and bosses, with manual updates to linear fit approximations and polynomial fits. The creator typically uses "approximate" correction, resulting in diameter errors of less than 0.05mm.