Another one of those chance encounters on the internet with a post and a link to a great resource for info. There are a PILE of 3d printed items here, possibly the patterns on them, loading trays, press accessories, old reloading manuals galore, various tool instruction sheets, Bair, PW, few reloading books from various authors, lot of stuff to investigate;
https://archive.org/search?query=reloading&page=33