Happy with your Prusa printer? Earn $30 when you recommend us to your friend, family or shop with the updated Prusa Rewards Program. PS: They will get an extra Prusament spool!

Marble 6-way-switch - compatible with gravitrax

A non-randomizing 6-way-switch for your marble run
29
103
0
1067
updated January 20, 2023

Description

PDF

There are some “randomizing” 6-way switches available on 3D print platforms.
I've tried some of these and all were working in a way that at least one exit was almost never considered.

So I decided to design a non-randomizing 6-way switch which evenly distributes to all 6 exits.

You need some additional parts:

  • 6 screws M3 10mm
    (stainless steel may not be magnetic enough - better use “standard" screws which are magnetic)
  • 1 screw M3 16mm (or max. 25mm)
  • 1 nut M3
  • 1 neodym magnet diameter 10mm height 3mm
  • 2-3 washers 
  • CA glue to keep the magnet in place

⚠ Make sure to insert the 6 screws before attaching the ring with glue! ⚠

The print may need a few supports only ⇒ see attached images.

Use 2 or 3 washers on the inner screw - the inner part must move freely and always stop in one of the 6 locations which are defined by the magnet stopping close to a screw.
If your magnet is weak you may use the optional part GravitraxDistributor_V5-UnterlegescheibeMagnet.stl to get it closer to the screws.

Have fun!

You may also want to have a look at my drop rails.

 

Base tile and ring are used with permission from the great collection on https://github.com/mkaschub/gravitrax-extensions.
Thanks to M. Kaschub for sharing.

Model origin

The author marked this model as their own original creation.

License