Marblevator, Rotary Wave.

"Marblevator, Rotary Wave" is another follower inspired challenge. Awhile back I designed and 3D printed a linear "Marblevator, Wave" (https://youtu.be/veaxztCVS_0) and a follower asked if I could create a rotary wave version, so here it is.

As usual I probably forgot a file or two or who knows what else, so if you have any questions, please do not hesitate to comment as I do make plenty of mistakes.

Designed using Autodesk Fusion 360, sliced using Ultimaker Cura 4.12.1, and 3D printed in PLA on Ultimaker S5s.

Soldering iron and solder.

I acquired the following parts:

1. One N20 150rpm gear motor.
2. Twelve 2x5x2.5mm ball bearings
3. One 4 AAA cell battery box with switch.
4. One 14mm diameter plastic sphere (marble).

I 3D printed the following parts at .15mm layer height and 20% infill unless noted otherwise:

1. One "Base.stl".
2. Four "Bolt (M8 by 8).stl".
3. One "Gear, Motor.stl".
4. Twelve "Lifter.stl".
5. One "Sine.stl", .06mm layer height.
6. One "Top.stl".
7. Twelve "Track Segment.stl", .06mm layer height.

This mechanism is a high precision print and assembly using at times very small precision 3D printed parts in confined spaces with highly precise alignment. Prior to assembly, I test fitted and trimmed, filed, drilled, sanded, etc. all parts as necessary for smooth movement of moving surfaces, and tight fit for non moving surfaces. Depending on your slicer, printer, printer settings and the colors you chose, more or less trimming, filing, drilling and/or sanding may be required to successfully recreate this model. I carefully filed all edges that contacted the build plate to make absolutely certain that all build plate "ooze" is removed and that all edges are smooth using small jewelers files and plenty of patience.

This mechanism also uses threaded assembly, so I used a tap and die set (M8 by 1.25) as required for thread cleaning.

To assemble the top, I performed the following steps:

1. Pressed one ball bearing into one "Lifter.stl" making certain the ball bearing rotated with ease.
2. Slid the lifter assembly into one of the lifter guides in "Top.stl" making certain the lifter raised and lowered with ease within the lifter guide.
3. Pressed one "Track Segment.stl" onto the end of the lifter assembly.
4. Repeated the previous three steps for the remaining ball bearings, lifters and track segments, making certain the bottom edge of all track segments were level with each other.
5. Slid the battery box wires through a hole in the sine retainer of the top assembly, then soldered the battery box wires to the gear motor such that the gear motor rotated clockwise when viewed from the motor shaft end of the motor.
6. Pressed the gear motor into the gear motor compartment in the top assembly.
7. Pressed "Gear, Motor.stl" onto the gear motor shaft.

To assemble the base, I performed the following steps:

1. After polishing the track surface on "Sine.stl", a placed it into the sine retainer in "Base.stl" making certain the sine rotated with ease in the base retainer.

For final assembly, I performed the following steps:

1. While holding the sine component in the base component, I carefully positioned the base assembly over the top assembly.
2. Secured the top assembly to the base assembly using four "Bolt.stl".

And that is how I 3D printed and assembled "Marblevator, Rotary Wave".

I hope you enjoyed it!