This is a remix of the compact bowden extruder by Schlotzz (http://www.thingiverse.com/thing:275593). It is intended for a Kossel rig with a top mounted spool. I angled it out since the bowden tube was catching on the carriage pivots. This avoids that problem and also provides a more natural angle for a top feed spool. I also added a mount that can be used to attach a micro switch that can be used for a filament runout sensor. (attach with 2x 2mm or #2 self threading screws). This version is for 1.75mm filament. I may add a 3mm equivalent later, but I don’t have Kossel 3mm setup to test it on right now.