Copper on Plastic Circuits
- From Supercon by Hackaday - 
- Workflow - Coat the plastic with a PTFE bike-chain lubricant to keep the catalyst from adhering. Laser the lubricant off in places where you’d like copper traces, dip the part in a wetting agent to make the catalyst stick better where the laser has gone, and then dip in catalyst and in an electroless copper plating bath. Bam!