Fast and economic extrusion control test

thingiverse

This is a quick, cheap and easy to run extrusion test that I've put together in Tinkercad. It simulates the movements required to print a larger (real) phone case in order to stop wasting TPU on my miscalibrated prints. The simulated parts include a cutout for a camera, the walls where the phone would fit and a few spiky spots to force the nozzle to travel back and forth on printed areas. Expect the piece to come as close as possible to the 3D view on your slicer, if your printer leaves any noticeable stringing, unexpected plastic strands or small drops anywhere, start tuning down your **flow rate** in steps of **2.5%** until it looks acceptable. If you keep on getting extra plastic strands throughout the surface, try enabling **Z-hop when retracted** and play around with the height, I recommend starting with, at least, **0.4mm**.