MakeCrank

Create custom-sized crank arms effortlessly using a leather cutter or 3D printer.

Precisely calculates dimensions and generates 2D SVG or 3D STL files of crank arms.

Easily view and share the generated models across different applications.

Automatically computes the required balance weight size.

Determines the balanced weight dimensions based on outer diameter, crank pin mass (g), and arm density (g/cm³).

Calculates optimal counterweight proportions.

Parameters

・ Crankshaft diameter (mm)

・ Crank pin diameter (mm)

・ Crank arm length (mm)

・ Crank arm width (mm)

・ Balance weight radius (mm)

・ Thickness (mm)

Preview generated models directly within the application,

or share them with connected 3D printers and computers.

The square below demonstrates scale using a credit card reference.

What's New in Version 0.5

Last updated on Oct 9, 2022

0.5
・Set minimum density threshold for balance weight calculations
0.4
・Added parameter constraints
0.3
・Implemented D-cut compatibility
・Introduced automatic balance weight sizing
0.2
・Added balance weight support
・Enabled circular configuration
0.1
Initial release

MakeCrank Screenshots