Rounded wall for calibration - Parametric

thingiverse

A Rounded Square Wall Generator. Takes Four Values Only: Size, Height, Thickness, and Roundness. I created this tool to generate thin wall models for calibrating 3D printer nozzle flow rates. The edges are rounded off, introducing a limitation in the system: you must have walls at least twice as long as the rounding to understand why, read "thin wall.scad" and/or Minkowski documentation: https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Transformations#minkowski. There are many good calibration guides available, like this one: https://www.thingiverse.com/thing:52946. Unfortunately, the only thin wall model I found caused weird print errors, possibly due to an STL error. Rather than continue searching for a suitable STL file, I decided to create this generator, so anyone can make their own calibration model.