18 Feb 2015 Itty Bitty Belted Extruder-1.75-Experimental-2 by clough42 | | 0 Itty Bitty Belted Extruder-1.75-Experimental-2 Experimental version of the Itty BItty Belted Extruder for 1.75mm filament. Versions are provided with normal and narrow channels.