This is an adjustable mount for small 2cm x 2cm x 1mm mirrors (linked below) for use with lasers to create a matrix of refracting beams.

Fun for learning, settings up your own pretend high security room or for follow the beam game with a spray bottle of water (or atomizer).

May print without supports, I used minimal supports. Print on it's side with the handle facing up. Once printed, remove supports and gently, but firmly turn the handle and the inner cylinder to detach it from the body.

Slot small mirror into the rotating cylinder and adjust it's angle using the handle to redirect laser beam.

Always use eye protection and use lasers responsibly.

2cm x 2cm Mirrors
https://amzn.to/2H927Bd

Red 1mW Laser Pointer
https://amzn.to/3537j1u

Protective Glasses (650nm 660nm Red Diode Lasers)
https://amzn.to/2H2JYoO