Within our Bucky Lab we teach students how to make things. Screws are very common in our workshop so we also have to teach the difference of the different screw heads and bits. A couple of students were so kind to model a set of different bits to illustrate the details of the different bits. We printed them on a leapfrog and Ultimaker 2 7 times bigger than original to have a good visual difference of the details.
We also used colorfabbs bronze fill in 3 times scale, with a bit of polish, this looks really great.