Scaling and Horizontal Compensation Calibration

thingiverse

Recently, I had designed some parts that used some large printed threads. Despite having added clearance between the internal and external threads, I couldn't screw them together, even after considerable sanding. I discovered LuckyPant's Dimensional Calibrationa Tool https://www.thingiverse.com/thing:1982686 which offered insight into radial compensation. His design is great, but I wasn't able to use it due to limitations of my printer, calipers and a desire to have a model that prints quickly and doesn't use much filament. To use this test print, you will need to have calipers or a micrometer. After printing the test piece, make a series of measurements and enter the values into the spreadsheet. It will supply correction values for scaling and horizontal calibration. I've added some notes on how to do this with Simplify3D, but I believe similar factors will be in other slicers. The correction values that it calculated may be small, but they have made a huge difference for me. Although they aren't part of the calibration process, I've also added a series of small holes that can be tested with drill bits to see how small of a hole that I could produce accurately.