This bolt has a cap with a LEFT-HAND thread. The nut is a standard right-hand thread. The inner container is large enough to fit US pennies (about 19.5mm diameter) and anything else you desire. Use the customizer to create your own custom length from 38 to 152mm inside length.
Some examples of things that can be stored in your secret container:
Pennies.
Skittles.
Pills (Aspirin, ibuprofen, chewable antacids, Ortho Novum, breath mints)
To make the threads work smoothly, you can use paraffin, furniture wax, lip balm, or petrolum jelly. Use sparingly, the threads should work without any lubricants, but may be a bit sticky at first.
bolt_container.scad | 1.5KB | |
bolt_container_body_56p4.stl | 4.4MB | |
bolt_container_body_76.stl | 6.2MB | |
bolt_container_cap_plain.stl | 971.8KB | |
bolt_container_nut.stl | 1.5MB |