New BIBO Dual Extruder Drive Block Upgrade

thingiverse

I have had a lot of problems with under extrusion and just an overall bad experience with the extruder mechanism with this iprinter. I followed other things lead and created a spring loaded Extruder Drive Block Upgrade which has been working great. Each side requires one of the following: 8mm m3 Flat Head Countersunk Bolt 16mm m3 Flat Head Countersunk Bolt 20mm m3 Flat Head Countersunk Bolt 0.36" OD, 0.042" Wire Size, 0.69" Free Length 28.32 lbs/in compression Spring I purchased all the hardware from amazon but could be found at most big hardware stores. https://www.amazon.com/gp/product/B06Y3JDM4R/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B005KSSK4K/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 09/06/2018 Update Slight change that makes loading filament much easier. Also change the arm a bit. I have printed this in pla, abs and polymaker pc-max. 03/10/2020 Update Replaced all models with newest version. Can now adjust tension with a bolt on the side of the extruder without taking it off the carriage. There is a spot for a captured m3 nut inside the tension adjustment area.