×Read this message from Erik, founder of YouMagine

Marblevator, Spirals.

An "inverse auger" Marblevator.

Gadget

Creative Commons Attribution Noncommercial Share Alike

Commercial use is not allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags

Description

"Marblevator, Spirals" is a two revolution downward spiraling Marblevator incorporating what I refer to as an "inverse auger" design.

In traditional "Archimedes Screw" styled marble lifts (I refer to the "screw" here as an "auger"), the auger is in the center and rotates while the guide rails are external and stationary. In this model, the guides are in the center and rotate while the auger is external and stationary and holds the spiraled track.

Designing the model in this manner provides easier 3D printing without the need for supports. However, I also designed the track so that it would "over rotate" the marbles to slow their descent. The model uses 8mm ball bearings for marbles, and the track rails are 7.9mm wide, so the ball bearing rides down the track rails and not the track bottom, which over rotates the ball bearings thus providing a slower descent. So with dimensions this tight I used the "Engineering Profile" in Cura 4.1.0 for accurate 3D printed parts the model requires.

Designed using Autodesk Fusion 360, sliced using Ultimaker Cura 4.1.0, and 3D printed in PLA on Ultimaker S5s.

Materials and methods

I 3D printed all parts at .15mm layer height, 20% infill, and no supports. I performed my usual sanding, filling, etc. process as in my previous projects to remove excess PLA as required.

The video shows assembly and operating instructions as well, but to assemble the model, I performed the following steps:

β€’ Soldered red and black wires to the gear motor.
β€’ Pressed the gear motor into "Track.stl", noting a small dot of cyanoacrylate glue may be required to retain the motor.
β€’ Routed the wires out the side of the track assembly.
β€’ Inserted "Barrel.stl" into the track assembly, then pressed it onto the motor shaft, noting the position of the motor shaft and barrel flats.
β€’ Pressed "Cap.stl" onto the track assembly, noting a small dot of cyanoacrylate glue may be required to retain the cap.

Once assembly was complete, I attached a 3VDC power source to the model making sure the barrel rotated counter clockwise as viewed from the top of the model, then added the ball bearings.

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

I hope you enjoyed it!

Documents

Issues

Issues are used to track todos, bugs or requests. To get started, you could create an issue.

Comments

Mini 1954 firstgradeclasspicsscanned0001Redwine printed this ago
Carousel thumb 220913print
Printed on:
Wanhao Duplicator i3
Result:
Decent..the box for the motor was .1mm too small..had to use straight files to fit..good fit with a little elbow grease. Top of barrel was messed up, but the cap made it stable. Roller spirals were perfect! Working model Love it
Feedback:
Great design..only hard part was figuring out how to get the support material out of the inside of the spiral. I used various needle nose pliers and small screwdrivers to dislodge and shake out. Wonderful results.
Mini 1954 firstgradeclasspicsscanned0001Redwine printed this ago
Carousel thumb 220913print
Printed on:
Wanhao Duplicator i3
Result:
Decent..the box for the motor was .1mm too small..had to use straight files to fit..good fit with a little elbow grease. Top of barrel was messed up, but the cap made it stable. Roller spirals were perfect! Working model Love it
Feedback:
Great design..only hard part was figuring out how to get the support material out of the inside of the spiral. I used various needle nose pliers and small screwdrivers to dislodge and shake out. Wonderful results.
Mini 1954 firstgradeclasspicsscanned0001Redwine printed this ago
Carousel thumb 220913print
Printed on:
Wanhao Duplicator i3
Result:
Decent..the box for the motor was .1mm too small..had to use straight files to fit..good fit with a little elbow grease. Top of barrel was messed up, but the cap made it stable. Roller spirals were perfect! Working model Love it
Feedback:
Great design..only hard part was figuring out how to get the support material out of the inside of the spiral. I used various needle nose pliers and small screwdrivers to dislodge and shake out. Wonderful results.
34da8dd3cf908c59dfc9e14800520b60?default=blank&size=40Cerulean Ronin added this to the Crafts collection ago
56511a3055f7b75810c6492238a6746f?default=blank&size=40cdobis commented ago

Love this thing! I want to make sure I buy the correct motor, do you have a link or reference to this gear motor? I don't want to get the wrong one.

Thanks,

Craig

Tennessee

Ce464a6fb2286580aa5c8b10e128a7c2?default=blank&size=40Kenneth Tolopka added this to the Collection 1 collection ago
Mini 20150514 1805293DRay added this to the Things to Print collection ago
Mini lora and iGreg Zumwalt published this design ago