Robo3d R1 E3D Flex Filament Guide

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April 14, 2017 Update: A fresh assessment indicates that the R1+ differs in feeder geometry, making it incompatible with R1+. Fortunately, the R1 remains a reliable option. June 21, 2016 Update: A few users encountered difficulties; we're working to determine whether the issue stems from the dimensional accuracy of printed parts or a more fundamental cause. To expedite progress, I'm reverting to printing with flex filament. Nov 22, 2015 Update: A user successfully utilized this part using PETG and stock hexagon hot end components. This breakthrough demonstrates the feasibility of printing PETG without the material bunching up under the hot end. Nov 15, 2015 Update: By popular demand, I've introduced a variant with removed PTFE flare, catering to users with Robo3D machines. I need the community to test this revised part. Initial trials should employ regular filament to ensure hobbed bolt and bearing efficiency; then proceed with Flex testing at slow speeds (10mm/sec?). Gratitude is extended in advance. Video: https://youtu.be/5TzSODHT6Zk Filaflex, 215 degrees, 20mm/sec, 110% extrusion, 0.1mm layer height, 0.3mm nozzle Operating a Robo3D R1 equipped with E3D Hot end reveals that flex material (NinjaFlex, FilaFlex) fails to print reliably. After drilling the filament hole beneath the hobbed bolt and cutting PTFE tube proximity, issues persist. The problem arises when printing flex is akin to pushing a rope; instead of applying axial force, it buckles in the transverse direction. By filling the gaps between the hobbed bolt, bearing, and 'tube,' a printable part resolves this constraint, facilitating efficient flex filament transmission. To reproduce this outcome: 1) Install the E3D hot end on Robo3D R1, then drill out the filament hole for extended PTFE tube extension. 2) Print this part with its large flat face downward on the bed. 3) Secure: Cut back the PTFE tube so it fits into the small half-moon feature upon installation. 4) Flex printing made seamless. Print settings: Filaflex, 215 degrees, 20mm/sec, 110% extrusion. I discovered that this part can be left intact within the extruder assembly, permitting effortless filament exchanges and continued Robo3D functionality. However, interest-driven modifications to cater non-E3D hot end compatibility necessitate testing by an independent individual who could redirect PTFE tube through a novel channel beneath the hobbed bolt. Robo3D Brand: Printer: R1 ABS + PLA Model Resolution: 0.05mm (optimal output) Rafts: No rafts printed Supports: Present After Post-print processing, it is essential to remove support material where PTFE tube emerges through the part.