Brew puzzle

Working on CADD skills, First real challenge. So I made what I could Immagine as a scale model of the magic tool Brew using whatever pictures I could find online and modified as what was missing or impossible.

This is a work in progress currently at version 2, v1 the screws were useless and could only act as a plug/cap. Next phase is to change the core to more easily fit into, currently, everything does not want to stay together how I would like it to, but it looks pretty great just glued together. The last step is to make an eternal spring for the center hole.