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
- adjustable length and thickness of the holder
- I've added cogs for better traction at both sides of the joint
- there is no necessity in a screw to put parts together - small axle my fix it

There is a parameter called "Print Expansion": if your printer makes parts slightly bigger (like mine), you could specify this expansion size in this parameter. It helps to fit a nut, an axle and a joint without filing or sanding.

Update 2017.09.26: combined all SCAD files into single one and prep