Dualtron cap

thingiverse

I lost several of these caps, so I decided to design one myself. Now, whenever I need a replacement, I can just get it done. I uploaded two designs: one with my logo and one without any logo at all. The one with the logo is said to be "not watertight" in Cura, but it prints just fine every time. It's designed to be printed in TPU, which gives it a bit of flex and helps it fit very tightly on the nut. I highly recommend using a heat gun to soften it before attempting to screw it onto the nut. This will make it much easier to work with. After it cools down, it becomes much harder to remove than the original cap - and that's exactly what I wanted!