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

Last crawled date: 3 years, 12 months ago

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 is a simple compact mount for E3D v6 1.75mm hotend with direct extruder.
It was designed to have the following features:
Minimal footprint to provide the largest possible print area in all dimensions.
PTFE tube extends right to the extruder gear, as recommended by E3D.
Flexible filament support
Built entirely in OpenSCAD. Highly customizable and parametric.
Can be configured for the parts YOU have: use any drive gear and any small bearing. Just set the proper dimensions in the header.
Compatible 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. So far I've only tested it with 624 bearing and MK8 drive gear. Any comments and suggestions are welcome.