Salvage
Break a piece or a tool down for some of its materials.
Break a piece down for half its materials back (an odd one comes back half the time; more with Salvager's Eye), so crafting and salvaging never pays for itself. The pieces burst into materials that fly to your Inventory. Salvaging a tool gives some Tinkering XP too.
Salvage all breaks down every spare piece up to a quality you choose.

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