A puzzle ball with hidden inner container based on a 200 year old design (history below). To open press the concealed button, then slide out the core container and remove the lid. Due to the close tolerances in the design the button and lid are not easy to spot on my make, making the design quite puzzling.

As a modern twist I have printed the proto in silk gold (PLA+) filament. Perhaps could hide a small 3D printed object inside the container as a surprise.

The size is 50mm diameter which was typical of the original item. Parts fit together well. The lid is designed to be a friction fit to both the core container and the ball body.

There are 3 parts/files to print. The main ball requires (central) support and brim to print. For the other 2 parts supports are optional (if you have good bridging), but brim is recommended. Suggest to use 3 walls (1.2mm wall thickness) and 20% infill. I used 0.2mm layer height.

History: Similar balls were made (lathe turned) out of wood in England around 1820 and the container inside was used to hold snuff or pills. They were often made in lignum vitae (a dense and hard wood) or ebony (a dense black wood). There were also versions made to hold gold sovereigns.

Please post your make photos.

PLEASE NOTE: the design license is Creative commons, Attribution, Non-Commercial, No Derivatives - you cannot sell this design or physical prints. Sharing without ATTRIBUTION (including link to this webpage) is not allowed. If sharing you cannot change the license type.

Check out my other designs: https://www.thingiverse.com/galaxy33/designs

⚠Warning⚠
Be careful in environments with young children and pets! This model contains small parts. If not properly stored in an environment with young children or pets, it may lead to accidents such as accidental ingestion or injury. If infants or pets are present, please take appropriate measures depending on the situation, such as refraining from 3D printing or storing in an appropriate place.

Do not apply strong force! Applying strong force to a 3D printed model or throwing it may damage the model and lead to accidents such as injuries. In addition, debris from damage to the model may be accidentally ingested by infants or pets. If the model is damaged, dispose of it immediately.

Store them in an appropriate place. After 3D printing, store the model in an appropriate place out of reach of young children and pets. Proper adherence to the precautions will ensure the safe use of the model.