Scrap For the Scrapper

Print a Medium Shredder, dock it on a platform, and feed it something - the small debris littered around crash sites is ideal, being both everywhere and free. Out comes Scrap, which the Trade Platform turns into resources (Junk Trader). The Medium Shredder only swallows small items; leave the big wreckage until you've got the larger shredders. First shred pops it, and 49 more gets you Chop Shop.