Ender 3 Direct Drive Extruder - Stepper Support and Filament Guide

prusaprinters

<p>These parts are designed to be used with Benawhite's Ender 3 Direct Drive Adapter (<a href="https://www.thingiverse.com/thing:3386628">https://www.thingiverse.com/thing:3386628</a>). It replaces the "stepper_spacer.stl" file with a spacer that also provides a support shelf for the stepper motor, as well as a filament guide that slots in to terminate the end of the original bowden above the new extruder location. Along with the "blank extruder" part included here, this allows retaining the bowden tube to constrain the filament path before the extruder so that other accessories, such as the stock filament spool holder, and other filament guides, run-out sensors, etc can all still be used with the direct drive. Basically, instead of the extruder "pushing" filament through the tube (which can lead to jams, especially with flexible filaments) the extruder now "pulls" the filament through the bowden tube so you get the benefits of direct extrusion (like the ability to print TPU on your Ender-3) without losing any other accessories you may have already designed/printed/installed (in my case, a great filament runout sensor by blaiseb, available here: <a href="https://www.thingiverse.com/thing:3357097">https://www.thingiverse.com/thing:3357097</a>).</p> <p>Updated 5-Mar-2020: Added XLoomSupport-v1.stl. This is designed to be attached along with the X-axis tension pulley, giving support to the wire loom which, at least on my setup with direct drive, now runs around the right side of the machine (looking from the front). Also, I have not made any changes to the SpacerFilGd files, as I personally have decided to no longer use that piece. As such, I now recommend using the "SpacerSupport_NoFilGd" file. The bowden tube only attaches at one end, to the "blank extruder" and I just let it "float" at the end where the extruder now resides. This makes changing filaments easier.</p> <p>Updated 5-Feb-2020: Added version 4 files. These are what I am currently using and testing on my Ender 3 at the moment. There will be one additional change coming soon as I am not happy with the filament guide tab attachment (which breaks quite easily) and have plans to design that slightly, however, these files are fully functional for now.</p> <p>Updated 3-Feb-2020: Please use version 3 files. After getting my printer back up and running, I was able to print the first iteration of these files, and found some problems with them. Stay tuned for any additional updates as this is still a work in progress.</p> <p>Files:</p> <p>"SpacerSupport-v4.stl" contains the extruder stepper spacer/support bracket.</p> <p>"SpacerFilGd-v4.stl" contains the filament guide, which slots into the above.</p> <p>"SpacerFilGd_LongTab-v4.stl" contains the same filament guide, with a longer tab which may be required depending on how everything lines up for your installation.</p> <p>SpacerSupport_NoFilGd-v4.stl" contains a version of the spacer/support without the slot for the filament guide.</p> <p>"BlankExtruder-v3.stl" is the part which gets installed in the location of the old extruder in order to facilitate using the old bowden tube as a filament path constraint.</p> <p>"XLoomSupport-v1.stl" installs with the same screws for the X-axis tension pulley and supports the wire loom where it runs around the side of the machine.</p> Category: 3D Printer Parts