Underwater Stacking Tower Game Block (like Jenga)

This is a block for a Jenga-like stacking tower game intended for under water use. Each block uses a M8 bolt and nut to add weight to it.

Playing the game while in scuba gear in a pool is fun and also a great training exercise for trim, buoyancy, and swimming backwards.

For a complete game you will need:

• 54 blocks
• 54 M8 x 80 cylindrical head screws (DIN 912, stainless recommended)
• 54 M8 nuts (DIN 934, stainless recommended)

Printing instructions:

• 0.2mm layer height (the bolt holes are optimized for it!)
• 0.45mm extrusion width and 3 perimeters/walls (the wall thickness is optimized for it!)
• 100% infill is recommended to avoid water entry into the nut/bolt head sections, but it's not a must.
• use a material that offers the needed chemical and UV resistance and a low friction coefficient. I recommend PETG. PLA is not recommended.