This is the free, downgraded version of Ginko the Brachiosaurus. If you want moveable legs and jaws become a Club Member or buy the final version here.

Edit, 24. 7. 2026: Updated the MOST 1:100 version and edited cover image. Added MOST 1:100 description.

MOST 1:100 explained

MOST stands for Magnetic Open Source Toys. 1:100 is the scale. These are the rules:

1. 1 real meter = 1 toy cm

2. Use ∅ 5mm × 2mm neodymium magnets

3. North is always facing upwards

It's easy: 1 meter in the real world is 1 centimeter in the toy word. A 5 meter car becomes a 5 centimeter toy. A 2 meter tall hero becomes a 2 centimeter action figure. To ensure compatibility between all toys the north pole of the magnets always faces upwards.

It's like Gridfinity but for toys! You can read the long version here.

WARNING:

SWALLOWING MAGNETS MIGHT BE FATAL!!!

Magnets and 3D printed parts are in no way suitable for small children. They might break and leave sharp edges, so make sure the kids are old enough to know what they're doing! 

Also make sure you don't have a steel nozzle inserted as it might pick up the magnets while printing and ruin something.

Print instructions

1) Open the .3mf as project in PrusaSlicer, adjust settings according to your taste. Every pause is pre-dialled. Skip step 2) and insert the magnets as explained in step 3).

2) If you're more of a masochist tinkerer use the .stls, navigate to the according layers, insert a pause in the slicer (right klick on the slider at the according layer in PrusaSlicer).

3) Insert the magnets according to the screenshots below. North always faces up according to the orientation of the model – hence the different orientations for the inserts. Determine north as explained in this article. 

4) Get Thag the dino jockey / snack and start riding!

Thanks to all my club members for making this possible. If you like the model, consider becoming one yourself. 

If you want to support me without costs, tell your friends and share my models on your social media! <3

If you have questions and inputs get in touch! Happy printing!