marble track - drop tube (gravitrax compatible by using my 6 exits basic tile)

Name: marble track - drop tube (gravitrax compatible by using my 6 exits basic tile)
Brand: JDO solutions
Availability: InStock

by JDO solutions

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thingiverse marblerun marbletrack

This drop tube collects the balls and guides them down through the tube. The exit of the tube is compatible with the…

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