Dodecahedron Cup

thingiverse

Patio Locking Device Prevents Umbrella Spinning: A Solution for Blocking Sunlight This clever invention secures a patio umbrella in place when tilted to deflect the sun's rays. Specifically designed for 37mm umbrella poles, it may also work for poles measuring between 36-38mm, although this has not been thoroughly tested. If you've found this innovation helpful, consider making a contribution via PayPal.me to support the time invested in its design. Your donation will be greatly appreciated!