by JBFromOZ, published
Based on OhmEye MicroExtruder, configured to use 608 skate bearing and zenith HEC1063 corner brace along with other hardware I had at hand.
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Based on OhmEye's extruder https://github.com/OhmEye/RepRap/tree/master/extruder
geared extruder and hobbed drive from www.2engineers.com
Local hardware had a different L bracket and as I had no 605's I altered this to suit 608'z and a slightly different fulcrum location. the extra plastic piece is to offset the mount hole for the L bracket to swivel on.
Many have reported reliability issues with this geared drive, ensure fully greased up, and also watch acceleration. I believe the biggest issue lies in peak acceleration retract to extruder, causing tooth failure.. as per https://www.youtube.com/watch?v=Ft2PxD-q7aU