Customizable direct drive extruder for E3D v6 hotend for Prusa i3 / Wilson / Geeetech

thingiverse

2016-03-17 UPDATE: Dual extruder version! Prometheus v2 hotend support (untested, set "prometheus=true" in scad to generate proper STLs) Rearranged stl files This compact mount for E3D v6 1.75mm hotend with direct extruder is a simple yet effective solution. It boasts the following features: A minimal footprint that provides maximum print area in all dimensions. PTFE tube extends right to the extruder gear, as recommended by E3D. Flexible filament support Built entirely in OpenSCAD for ultimate customization and parametric control. Configure it for your specific needs: use any drive gear and small bearing. Just set the proper dimensions in the header. Works with both standard "rework" X-carriage and Geeetech version. Multiple mounting holes for fans, sensors, lights, etc. Easy maintenance: hotend and extruder parts can be removed or replaced without disassembling the entire thing Part list (for single extruder): Some PTFE tube, if it didn't come with your hot end (2mm ID / 4mm OD) 2 x M3x40 screw 3 x M3x16 screw 2 x M3x20 screw 1 x M3x10 screw 1 x M3x5 flat head screw 1 x M3x12 or M4x12 or M5x12 screw (depending on bearing type) 1 x 4mm OD / 3mm ID / 12mm long brass tube (optional, can be disabled in config) 3 x M3 nut 2 x M3 washer M3 thumb nut for spring tensioning (or two nuts and a wide washer, or M5x10 internal hex bolt like in Geeetech MK8 extruder) MK8, MK7 or other drive gear Any bearing with 3-5mm ID, 9-16mm OD and 3-5mm width (603, 623, 624, 625, MR104...) Spring with 8-10mm diameter and 15-25mm length 5015s cooling fan for PLA This is a work-in-progress. Only tested it with 624 bearing and MK8 drive gear so far. Comments and suggestions are welcome. Print Settings Printer Brand: RepRap Rafts: No Supports: No Resolution: 0.2 Infill: 50% Notes: Download the zip file, open hotend_extruder_mount.scad and configure it for your gear, bearing, x-carriage and motor. For dual extruder you need a dual base and two copies of each other item (left and right). Better to print the extruder parts with ABS or PETG, but I printed it with PLA (except fan duct) and don't have any melting or other problems so far. Post-Printing Remove supports from the filament tip. Assemble as pictured. Bearing mounting screw is supposed to self-thread into the plastic. Carefully cut the PTFE tube with a sharp knife according to the shape of the plastic tip so it's as close to the gear and bearing as possible.