DinoPrint
This is a Dino Assembly mechanism for kids
I have designed this model for a class with 8 year old children.
It needs some socket head cap screws like this:
http://www.roymech.co.uk/Useful_Tables/Screws/cap_screws.htm
- 3x M3x10
- 5x M3x20
- 2x M3x40
Some pieces have a tiny hole for a fixed assembly with the screws and other pieces have a big hole for free movement in joints.