double helical gear pen holder —
Founded double helical gear pen holder models & stl files for printing
Theodore Petrov
Lyl3
paper_faces
stuffperson
Steveon15
yuki_8762
Diablo944
anthologen
DDV
patilgs
Charlie Willis
LarryD
Johny69
JustinSDK
sjolin
Frode H.
Heavyrage
milesson
print_3dp
cyber-attack31