Okay, this one is a bit silly.

As a learning experiment into how to design an iris mechanism, I was looking for a "practical" application instead of just another paperweight. This is the result: a mechanical iris for sizing pasta servings.

The ring is marked with four notches, each designating a 50g serving. One notch serves one person (50g), fourth notch serves four (200g), etc.

Print list:

• x1 base
• x1 grip
• x9 petals

Had a lot of fun designing this one, feel free to check out the files and make your own remix.

OnShape link: https://cad.onshape.com/documents/3be895b44ca02b90b691d298/w/793b11b3a910d3d5b6aa20cf/e/e80813bc3a692b196eed4bf3

Monoprice

Maker Select Plus

No

No

0.1

20%

Any material does the trick.