Evolved drain plug strainer

A permutation of the computational geometry drainplug it references, this suits 57mm diameter drainholes. The purpose of the strainer is to efficiently strain fluff and hair from large volumes of water - without the possibility of clogging.

This variant solves the problem of the strainer floating off the drainhole with large water influxes. It does so by including an enclosed volume for a 30mm diameter lead sinker... The additional weight ensures the strainer stays firmly in place in all cir