OpenSCAD module to generate screw threads with any profile. The .STL is an example male/female pair with a trapezium profile.
Arguments are:
The module respects $fa as the minimum angle of a fragment, so optionally pass this to control resolution.
The profile is a list of [x,y] points describing a polygon. x values of 0 will lie on the surface of a cylinder of the appropriate diameter. x > 0 will be recessed, x < 0 will protrude.
Update 2016-02-13
The previous version aligned the profile in the plane perpendicular to the thread, which lead to a slightly distorted profile in vertical cross section (increasing proportional to pitch). The latest version aligns the profile in vertical cross section.
| thread.scad | 1.2KB | |
| thread.stl | 5.7MB |
