Update 2019-08-21 :
Version 4 guide: use collet and clip to secure bowden to guide, use genuine E3D 4mm bowden collet for 1.75mm filament, the clones are too big and will not fit
Update 2019-02-02 :
Version 3 guides : enlarged fitting hole radius by 0.1mm for easier mounting and to prevent cracking, added tensioner to guides to allow for spring tension adjustment, use 15mm or the stock 20mm spring, 2 tensioner length provided. If you prefer the fixed tension, continue using version 2
Update 2019-01-27 :
Version 2 base : minor tweak, use 8mm m3 lock bolt, added base with tube support
Update 2018-11-04 :
Version 2 guides : improvements to guides: minimize gap to optimize for flexible materials, use M4 nut to secure bearing
Update 2018-09-14 :
Version 1 : improvements on the base (retraction stabilizer and reinforcement) and guides (more room for gear, plunger, rounded edges)
This design is inspired by SeeMeCMC EZR Struder, I had been using it for over a year on my CR-10 until it finally broke on me. This is designed…