Scalpel tray

Summary A simple tray for five scalpels. This is a study for a scalpel case (https://www.thingiverse.com/thing:2125449). It will fit most scalpels, we tested various kinds. Swann-Morton no 3 and no 4, and a bunch of unbranded ones. We might also create models for other amounts of scalpels, let us know if that is interesting. Also, this thing will probably never be sterile. But if you (for a second) wanted it to be for some reason, you probably already knew that.