Coffee distributor 51mm

First iteration of coffee distributor for delonghi dedica.
The screws need to be screwed when cooled, as the wobbling is not huge when printed in PLA.

TODO:
- extendend a bit the bottom so can be used as a damper, and add a way to add momentum for better feeling and usability.
- intruduce an extra 100um of whobbling adjusting the screw profiles.