helix_extrude();// module for OpenSCAD
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module helix_extrude( points, pitch, loops, fn);
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Updated at source:
Model information
- Source
- Printables
- Category
- Other 3D Objects for Learning
- License
- GNU Lesser General Public License
There is no built-in module for helical extrude. The twist function of linear_extrude starts to break at higher twist rates, like with threads. Uses polyhedron().
usage is:
helix_extrude(
points, //2D pt array, the kind you would use with polygon(). Pts order should be CCW.
pitch, //Distance from one point of the profile to the corresponding pt on the next.+RH, -LH.
loops ,//How many times you want to want to wrap
fn); //Number of facets per single turn, same as $fn
Loops cannot overlap, it will not render.
There might be some chaff in the script, won't affect much. It's just my programming style. I brainstorm, and blast as many variables and code as I can. Then I start putting things together.