3 way kawai tsugite joint is used a carpentry joint used in wood works.

3 way kawai tsugite joint .STL

curvedtexturedvase.STL

textured vase.stl

square_lattice.stl

Topologically differentiate eight faced unit cell.

Octagonal_lattice.stl

honeycomb_lattice.stl

An impeller is a part of a pump or compressor that rotates at a high speed and acts as a propeller to increase a fluid's pressure and flow rate. Impellers are made from various metals such as steel, iron or bronze, as well as plastics.

Impeller.STL

impeller1.STL

An impeller is a rotating component equipped with vanes or blades used in turbomachinery (e. g. centrifugal pumps). Flow deflection at the impeller vanes allows mechanical power (energy at the vanes) to be converted into pump power output.

impeller.STL

A universal joint (also called a universal coupling or U-joint) is a joint or coupling connecting rigid shafts whose axes are inclined to each other.

universal joint.STL

Roller bearings are used to replace sliding movement with low friction, rolling motion in rotary applications.
cylindrical type roller bearing. 

roller bearing.STL

car rim.STL

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