M6 Extruder Bolt Guide for Flexible Filament

M6 threaded headless bolt for using flexible filament with an MK8 all metal extruder. Used to reduce risk of the filament binding up.

**Notes**

A low layer height is recommended to preserve the screw threads (I used 0.1 mm). This was designed for use with 1.75mm filaments, it will not work with 2.5 or 3 mm filaments (the hole diameter is close to 2.55mm). Should be printable as-is without supports. I have only done test prints using a 0.4mm nozzle and a 0.8mm wall/shell thickness, other op