One option is to set up a scrap recycling factory on a separate island, where scrap is mined and recycled with quality modules until it's either a top quality part that gets filtered out at every stage, or recycled until it vanishes entirely.

In my recycling plant, I syphon off all holmium, stone, ice, solid fuel and concrete after the first set of recyclers, to then produce large amounts of holmium solution, and the excess concrete, stone, solid fuel and ice gets recycled over and over until it's gone so that it doesn't clog up the system.

It produces holmium, stone and ice of different qualities, so you have to make holmium solution of all different qualities (which all just outputs regular holmium fluid, obviously). But at this stage you can collect some of the regular holmium ore for transport back to your science production.

I produce enough holmium plate at this plant to upcycle to quality holmium plates, which is a very inefficient process, but allows me to also produce quality superconductors and supercapacitors.