This project was a collaboration between [Michael Bourque](https://www.facebook.com/michael.bourque/) and [Derek Rowland](https://www.facebook.com/derek.a.rowland). Although it was modeled from scratch, it was heavily influenced by Matt Bevo’s fantastic “[CR6 SE Direct Drive BMG Adapter](https://www.thingiverse.com/thing:4749388)” found on Thingiverse.
Our aim is to make a free and easy to print direct drive kit for the CR-6 SE that is strong, rigid, while avoiding problems plagued by the bowden tube and strain gauge systems.
As you may know, direct drive is all about rigidity and no backlash. In our testing this produces excellent prints with no stringing or issues plagued by less rigid systems. It does not break or interfere with the strain gauge. It’s a great upgrade you can do yourself.
You will need
- [BMG V2 Clone](https://www.amazon.com/gp/product/B08KP189KN/) - Existing Extruder Stepper Motor - 1 [Meter Long Stepper Motor Cable](https://www.amazon.com/dp/B07SMPPLNT/) - 3 [M3x40 Pan Head screws](https://www.amazon.com/gp/product/B07L65DHV6/) - 2 [M3 Pan Head screws](https://www.amazon.com/gp/product/B07L65DHV6/) - 2 [M3 Nuts](https://www.amazon.com/gp/product/B07L65DHV6/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1) - [Loctite 242 (Medium Strength, Blue)](https://www.amazon.com/gp/product/B000I1RSNS/)
Required Printed Parts
- dd_bmg_adapter.stl (or dd_bmg_adapter_thin.stl for standard length BMG bolts) - strain-washer.stl - bowden_connector.stl
Note: We have also included a .step file so you can modify the bracket if needed. Please share what you do so we can continually improve the design.
How to Print
Use a stiff filament material like PLA, PLA+, or PLA Carbon Fiber. PETG is not recommended as it is too flexible. Use Cura or your favorite slicer; recommended settings and orientation of parts are shown below; print as shown to meet design intent.