Spiral bevel gear

Spiral bevel gears (conical, helical), proof of concept

Look at :
http://en.wikipedia.org/wiki/Spiral_bevel_gear
for some theory.
Actually my naming of these files is wrong, the gears ar not hypoid !
This means that the rotational axes of these two gears do cross through one point in space.

Gcode generated with netfabb-Ultimaker edition, Martijn's build-style, 0.15mm layer height.
Printed on my (standard) Ultimaker, speed 250%, fan on (great machine !)

NB: the teeth were decrease