Alternate Effector Arm for MIN Micro Delta 3D Printer

Alternate effector arm for MIN Micro Delta 3D Printer by Rolohaun Design

I accidentally bought the wrong ball joints (link below, not affiliate) and had to design new effector arms because they didn't have a screw on the end. Model is mostly parametric except where I got lazy designing the snaps. (Don't hate me too much, I'm a biologist not an engineer!) You may have to modify model parameter “DiameterScrewHead” to fit your screw head. I printed on a BambuLab P1P with a 0.2mm nozzle because that's what I already had set up so you may also have to adjust the model to fit the tolerances on your model.

BoM (per arm):

(2)   2xMinEffectorArm_InternalScrews (3d Printed)

(2)   M3x35 screws

(2)   M3 heat set inserts

(2)   M3 Ball joints like the ones linked below 

https://www.amazon.com/dp/B0CHZ28VY7?ref=ppx_yo2ov_dt_b_product_details&th=1

Assembly instructions:

Note: Do 2 at a time and pair them up so you can align the ball joint pairs on each arm.

1. Add heat set insert to the hole on the square end of each part

2a. Optional: add thread locker to the heat set insert. It seems secure but you can never have things be too secure with a 3D printer.

2b. Screw the screw through the insert with the head toward the center of the part. It will be at an angle at first but should fit in the slot at the center of the part. The end of the head should line up with the end of the slot.

3. Screw on the ball joint until tight. Check the angle of the ball joint and adjust the screw to align them. Make sure the ball joint is tight.

4. Remove the ball joint, add thread locker, then screw it back on.

5. Add your favorite adhesive, snap the to halves together, and clamp for the recommended time for your glue.