Thingiverse
MakerWorld
MyMiniFactory
Printables
Thangs
Cults
CGTrader
Youmagine
Gambody
Etsy
Tags
Machanical 3D Printable Models
Benchynator
MakerWorld
Ignosi
Print in Place Expanding Ring Mechanism
Thingiverse
_gimpelginster
Pickup Truck - Print in Place PLUS (See Video)
MakerWorld
Triple G Workshop
V-8 Engine Block
MakerWorld
Triple G Workshop
Push2open - Reliable and powerful (Latch mechanism)
MakerWorld
FunkyArt
The 3D Printed Marble Machine #2
Thingiverse
Tulio