Robocup insert for 250ml cans

I have not tested this. This was an earlier design, before I settled on this one, so I didn't even bother to print this out to test it. Technically it should work, but no guarantees. I prefer the dovetail one but if someone prefers this, here you go.

Uploaded the .f3d in case you want to make adjustments or even adjust it for different kinds of drinks like coffee cups or something. Maybe I'll do that at some point, maybe not.