Retraction Benchmark
thingiverse
This cute little test gives you information about retraction. Scale should be %20!!!!!!!!!
Download Model from thingiverse
With this file you will be able to print Retraction Benchmark with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Retraction Benchmark.