napkin ring problem —
Founded napkin ring problem models & stl files for printing
Padu
Padu
LoSign
Lumbermonk
gfellows
John G.
Simon Pratt
Lumbermonk
SimplusDesign
gwygonik
KEVINM
enriverd
MatterHackers
robintrinket
Jakob Kerber
grazuncle
KEVINM
Jan-E.de
Oxa
Robenc954