Parametric bobbins

OpenSCAD files to produce various spinning wheel bobbins, along with some example scripts to parameterise them.

There are files to produce a simple whorl with or without spokes, and a flanged whorl that is printed in two parts to avoid large overhangs. In all cases they have a large central counterbore into which a plastic pipe can be fitted for the spindle, and a smaller through-hole for the flyer spindle.