popular models for print —
Top 1000 free 3D models & Stl files
Matt Finder
PollyGrimm
Area51
Soarpix
ThomsonIT
johnniewhiskey
Scan The World
mz4250
Printable Puzzle Project
ksuszka
Blascool
jimjimjimmyjim
Nigeke
GigaPenguin
Novatropes
satoshi
ben#03
PaburoVIII
Amforma
Z-mech