I am sure you've read before if all modern tools and factories were to disappear we would need to rebuild almost from scratch because you need more precise tool

I am sure you've read before if all modern tools and factories were to disappear we would need to rebuild almost from scratch because you need more precise tools to build even more precise ones. In that vein: > There was an extra electric screwdriver build to adjust the cylinder pistons. It is made completely out of LEGO Technic pieces. It was needed because an actual screwdriver has too much torque. The LEGO one uses Power Functions motor, simple gearbox and custom-designed switch.