Theo Klein Bosch 3 in 1 Screw and Nut

thingiverse

Screw and Nut for Theo Klein Bosch Construction Sets Original screws (red ones in the pictures) are very smooth, therefore they cannot be fastened properly or they become loose after some playing. So, i designed some screws myself, which can be used with the original toy screwdriver. Screw and nut are not compatible with the original ones. So you have to use printed parts with each other. In the beginning it is a tight fit, but after some action it screws easily and holds pretty tight. One disadvantage of this, compared to the original one, is the brittleness. If you keep throwing them on hard floor or over-tighten, it breaks. I used PLA and 0.07mm laver height.