Better marble run handle
This is a more comfortable handle for heavy or metal marbles.
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updated
December 12, 2025
Description
PDFIt's just an improved version of the handle. You can glue it to the Archimedian screw. For 9mm marble you need to scale this model to 112.5%.
Model origin
The author remixed this model.
Differences of the remix compared to the original
It's thicker and has a larger diameter, making it easier to rotate the screw.