This is a Nienhuis puzzle map knob replacement.
I also included a stamp form for making a personalized stamp for labeling materials (if you are a teacher, there is a lot of that happening). I made the stamp with a laser cutter, this was just an object to stick the stamp to.
This object was made in Tinkercad.
Edit it online https://www.tinkercad.com/things/0T25UZ8behj
0T25UZ8behj.stl | 150.3KB | |
Montessori_PuzzleMap_Knob.stl | 39.4KB | |
Stamp_holder.stl | 37.6KB |