GuerillaBeam parametric extension tube

These extension tubes feature the 53x3mm 90° threads found on all screw-mounted [GuerillaBeam ](https://www.thingiverse.com/thing:692318)parts. Their obvious use is for creating additional distance between projector parts.

Their real purpose is to help you create your own lens adapters, light adapters, and/or accessories.
You can remix the OpenJSCAD and/or recombine parts of it in your favourite 3d modeller.
Some experience is required, but reading this, you can probably do it, and I'm alwa