These are homemade from number #12 bare hooks. I melted solder

Indian Jewelers Supply—Tool/Supply, Vol. 12—www - 2NativesR1

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4 Ways to Connect a Wire Without Soldering - Instructables

Prototype logic board used to drive 4 H-Bridge modules, preventing damage to the H-Bridges. : r/diyelectronics

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What can I use to solder wires if I don't have a soldering wire or