A script for generating customized bases for pyssla/perler beads.
I didn't bother to eliminate overlapped walls so I fixed all stl files in 3D Builder windows app.
STL files are generated on 5mm grid (works well with Ikea's Pyssla beads). If you need other sizes you can change parameters at the begining of the script.
I printed it with ABS so they are more durable when used with iron.