This gift box has a secret: to open it, you must spin it!

The lid features a mechanism with four floating latches that slide into place. These latches lock the box shut and will only release when centrifugal force pushes them outward simultaneously. Each latch independently prevents the box from being opened, so only by spinning the box can all the latches move into their outward positions, allowing the lid to lift off.

This puzzle box is perfect for hiding small gifts or creating a fun challenge for the recipient. It’s an engaging blend of physics and ingenuity that’s sure to impress!

100% printed - no hardware, fasteners, or adhesives required. No additional support is required.

Free for a limited time. Please collect it, like it and download it now to help support me in the league competitions. Thank you.

UPDATES: 2024-11-18: Please note that if you downloaded this before 2024-11-18 1300 PST the lid needs to be downloaded again. There was a problem with the alignment of the support. Please download the revised part. 2024-11-19: I have improved the fit of the "grid plate". There is now a version 1v01a.

Print Settings:

Material = PLA or PETG (any material should work) Nozzle = 0.4mm Layer height = 0.2mm Line width = 0.4mm Wall count = minimum 2 (0.8mm) Top and Bottom Layer Count = minimum 3 Infill = 15% Detect Thin Walls = ON (this is IMPORTANT) Ironing = Not required Brim = No, only if needed Support = No

Commercial Licensing is available through my logicalplanet Memberships here on Thangs. I will customize and provide commercial support to members on request.

See my blog for more details and other product info… https://www.logicalplanet.com/