Allen

I drew this model because there is a thing that can be better: allen keys. We use them so many areas of our life: technical schools, factories, competition and also in our houses. In Turkey, we are using metric system and I was thinking that "Could I keep all of allen keys in one object/thing?". Then I started to drawing this model. 1) I want to create this object with metal but the competition rule is "it has to be suitable for printing with 3D printer, I have taken a picture(pic: 1, I hope it is good because I have not used a 3D printer) and I guess the best material is SLA or PolyJet. 2) The manufacturing method is "Additive Manufacturing". 3) I uploaded the stl files, STEP file and render picture(pic: render1, I have not rendered anything so I hope it is okey too). 4)You can use this tool for "1.5-2-2.5-3-3.5-4-5-6" allen keys.