Clapton coil maker

This is tool to make clapton coil for e-cigarette.

####Bill of material:
* M3x25
screw
* M3 lock-nut - 2pcs.
* [M3 lock nut knob](http://www.thingiverse.com/thing:641854/#files)
* 4 x 6 polyuretane pneumatic tube 11 mm length piece
* Sew machine spool (22 mm)

Fit lock-nut to body with significant force.

Instead of usage instructions see [this video](https://youtu.be/ji_LRDSaKP4)

Winding wire tension is provided and controlled by braking of the spool
with you finger.