Designing the knurled thumbscrew

Placeholder entry. The first paragraph is what the homepage shows beside the product, so this is where the one-line reason the part exists should go — what was wrong with the stock screw and what this one does differently.

The second paragraph also appears on the homepage, cut with an ellipsis. Everything from here down is only on the entry page: the prototypes, what changed between them, how it's made, and anything worth knowing before buying one…