Activity Board - Screw

A big screw for child activity board. Instead of a fixed screw and a moving nut as we can see on other model, I wanted a more realistic screw for my kid, where the screw actually move inside the wall. Beware that you need some space behind the wall: in my case I used a wooden cube. I designed it from scratch to be nice and easy :Easy mounting using two M4 wood screws.Easy printing: no support nor AMS needed.I have designed other busy board activities :)