Ultimaker Original Extruder

This is just a combination from different things to have the entire extruder in one place leaving out optional other parts.

It uses MoonCactus' Rollerstruder (http://www.thingiverse.com/thing:73082). But instead of the original base it uses the remix of the base from elephant (http://www.thingiverse.com/thing:184298). The large gear I used is from foosel (http://www.thingiverse.com/thing:151642) and the small gear again from MoonCactus (http://www.thingiverse.com/thing:45407). As well from MoonCactus is the design of the great hobbed bolt (http://www.thingiverse.com/thing:68480).

In addition following parts are needed:
* 3 ball bearings of type 608 ZZ (22x8x7 mm)
* 1 cylinder head bolt M8x40 mm
* 1 cylinder head bolt M8x30 mm
* 1 countersunk screw M3x20 mm
* 2 round head screws M3x16 mm
* 3 round head screws M3x20 mm
* 5 M3 nuts
* 1 hex screw M6x70 mm
* 1 wing nut M6
* 2 washers with 6.4 mm innner and 17 mm outer diameter
* 2 M8 washers
* 1 pressure sprin