Arcade push button cap, plunger

Arcade cabinet push button. This is only the plunger (i.e. the part you press). It will be useful to remixes only.

### parameters
File is parametrized. You can set height, diameter and if you want flat or concave. (concave only works for 22mm because i had no time to implement it correctly).

### source:
Source files at https://gitlab.com/gcb/3dump/