A Pill Pill capsule, or pill shaped screwable container.

To be completely waterproof, an O-ring must be added. Inner diameter should be Ø14-Ø18.5mm. Thickness 2-3.5mm.

There is also a version for use without O-ring. The watertightness there is achieved by a conical seal.

The thread used does not require any post-processing, is very smooth to use and exceptionally strong. It requires a few screws in and out to smooth out the roughness of printing. Even when scaling up the model (where the space between the inner and outer thread increases), the thread will continue to function properly.

There are 2 versions for the upper part (O-ring version): 1 for attachment to a steel ring (see photo) and 1 for use with a lanyard. The latter has no visible eye for attachment to the Pill...

Printing:

Print both parts with the rounded side facing up. I printed everything with 0.4 nozzle, 0.2 layer thickness and 100% infill.

For the part with external thread, use paint on support for the contact surface of the O-ring. Avoid internal support! Also use a (outher)brim for this part for good adhesion to the print bed!

The part with internal thread can be printed without support and brim.

For the [no o-ring] version both parts can be printed without support. Use a brim for the top part!