Parametric Microphone Holder

I've remixed microphone holder by Tanato by complete re-draw it in OpenSCAD, so you may customize it as you want.

These particular STL files contain holder of 30mm long with inner diameter of 32 mm at the front end and of 29 mm at the rear end, mount base fits M8 nut (outer size between edges is 16mm).

Things added to the design:
- adjustable base size to fit any nut
- an inner diameter of the holder at front and rear ends may be set independently, so the holder may have a conical shape