Minimalistic Mk7 replacement

This Mk7 replacement features a spring-tensioned, quick-release 623 bearing idler, and won't interfere with dualstrusion. The back is also open to make it easy to clean the teeth of the drive gear. This works with MBI's Mk7 and QU-BD's MBE extrude...

Tags: extruder makerbot makerbot upgrade part mk7 mk8 openscad parametric reprap stepper upgrade


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