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Descrição
This marble machine is for 25mm steel balls.
Scale down if needed, or scale up for larger ping pong balls.
The elevator consists of a fixed spiral and a rotating shovel. Works very well.
The attached motor is optional. Mounts for both a standard size or a micro servo are included. Servos need to be converted to contiual motion. I drive mine through a DC/DC voltage converter to produce ca 1.8V from a 5V USB supply. It can of course run at 5V too, but that seems to hectic :-)
To do save electricity, a manual crank is also included.
All components designed in FreeCAD.
The floor plate was designed as a massive slab, but then fine tuned in prusaslicer, so that the infil is exposed:
- 0 top and bottom layers,
- select Honecomb infill pattern
- test with a small block around 10.8% infill so that the 7mm posts can be nicely pushed into the holes.
The actual tracks are cut from 1.75mm filament and snapped into the support arms.
I did not try to print useable 25mm balls myself, as I had these left over of steel balls from another project. (Maybe print two hemisperes, and glue them together....)
Category: Mechanical Toys
Spiral marble elevator with simple run
Publicado em 18 de fev de 2023
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