Measurements are 1.5 inch by 1.5 inch by 3 inch

Or 38.1 mm by 3.81 mm by 76.2 mm

I printed mine for a tower competition, so if you want to follow the same rules, here they are:

Must be 3 - 4 inches (76.2 - 101.6 mm) tall

Must have a ½ inch (12.7 mm) hole through the center vertically

Must weigh less than 15 grams

Must have an internal volume of 9 squared inches

(I'm pretty sure mine followed the last rule although I might be off)

For my tower to cut the weight, I printed it at

0% infill

1 perimeter

Solid layers top/bottom 1 as well

No supports

This was printed on an MK4s

This held 311.6 lbs (141.3 kg)

It failed on the diagonal outer corners, top right and bottom left in cover image