Remote Drive Extruder for Delta w/Bondtech Gears

thingiverse

This is a remote drive extruder that I've been using for about a year on my homemade Delta... Instead of using a flexible shaft, it uses a telescoping shaft which eliminates the flex most flex shafts will have. It's a fairly simple design using two square aluminum tubes with rods JB welded into the ends. There are U-joints between the stepper (up top) and the shaft hub of the bevel gear. The extruder houses a Bondtech 1.75mm gear set. The main hub/shaft for the gear set is a simple M8x1.25 Threaded Bolt (40mm long) **Look for aluminum to reduce weight. Video below... *The noise you hear are the aluminum tubes during retract. https://youtu.be/c57MM-ex6BQ Parts Needed: (4) MR148ZZ Bearings: https://www.amazon.com/gp/product/B082PS8MKX/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 (1) 10mm Square Aluminum Tube: https://www.amazon.com/gp/product/B07ZVSSGX7/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 (1) 8mm Square Aluminum Tube: https://www.amazon.com/gp/product/B07ZVS3YQJ/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 (2) U-Joints: https://www.amazon.com/gp/product/B07Z4H1PG4/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 (1) Main Hub/Drive Bolt: https://www.amazon.com/gp/product/B07Z4H1PG4/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 (1) Bondtech Gears: https://www.filastruder.com/products/drivegear-kit?_pos=6&_sid=bdc773a94&_ss=r&variant=12119190634567 (1) 40mm long M4 set screw (hub for small bevel gear) (1) 25mm long M4 set screw (hub for front latch) (4) 12mm long M4 Screws (Case Screws) (3) 8mm long M4 Screws (Case Screws) (1) 4mm ID Collar for the M4 set screw in the small hub (1) Threaded E3D v6 Heat Sink or similar. You'll also need some square nuts and short M3 bolts (3 of each) to attach the extruder to the effector. It's not rocket science. In my current design, I made a thumb screw to tighten the from latch/hatch that tensions the filament. Use your imagination for this. There are M3/M4 thumb screws available on Amazon or you can use a long M3 screw just like I have... print a large end and glue it to the screw head. I'm attaching this as a .STEP file... I'd rather you take a look at this F360, Freecad, etc... it works great as is, but I'd love to get some feedback. I'm open for any suggestions on improvement... please remix it! I need to give credit to [Robert Lorincz](https://www.thingiverse.com/lorinczroby/designs) for the front latch on this design... it worked great, so I didn't change it... check out his awesome designs! I also need to give credit to Jon C [goeland86](https://www.thingiverse.com/goeland86/designs) for the telescoping shaft drive... I didn't think it would work well, but it's much better than the flexible shafts. Thanks guys!