This mounts a stepper motor on a 2040 with an offset. It was designed for my Ender 3 which has the Ender Extender, but maybe used in other situations. Let me know if you find another use for this and I'll update the description to help others know the additional usages.
This Stepper Motor mount offsets the motor lower than what Ender Extender provides in their kits. This places the motor clear out of the way from the bed and helps avoids crashes that can can happen when upgrading the stepper motor. It is a bit too low and does require feet to be added.
This mount is very beefy. My first version worked, but had flex causing the pulleys and their motor to be a skew. This version is overkill, but has no flex and remains straight.
NOTE: The belt from the ender extender kit will not fit if you are upgrade from that kit.
This mount replaces the two M5 bolts threaded into the end of the extrusion with a single bolt and two M3 bolts with channel nuts, on the underside. It also uses an interface fit with the slots of the 2040. This creates a solid connection without the need for the second hard to design for M5 bolt.
This Stepper Motor mount also includes a mounting location for the end stop.
There is a hole allowing adjustment or securing the pulley attached to the stepper motor. The stock motor pulley is pressed on but aftermarket motors may require securing the pulley with a grub screw.
This mount allows for up to a 36 tooth gear to be installed. Using a different size stepper motor pulley will require reconfiguration of your printer. You can adjust the axis steps in the configuration menu of Merlin.
This design uses to additional pulleys to align the belt perfectly for the extruded aluminum regardless of tooth count on the stepper motor. Additionally, the belt will automatically align properly on the pulleys once setup.
This mount is a 2 piece design. The cover secures in place with alignment pins. This cover also braces the pulley bolts to ensure they don't skew under tension.
Personally, I just made a hardware store run to get the 25mm bolts.
I recommend threading a bolt into the nutsert before heating and pressing them in. This keeps the plastic from getting on the threads.
Please let me know if there is any details wrong here. I did the best I could.
Original Posting: https://www.thingiverse.com/thing:6262729
The author marked this model as their own original creation.