Dyeing a bare FR4 PCB plates
- Gherkin PCB top and bottom plates
- 3M 220 grit wet/dry sandpaper
- iDye Poly Purple dye
- Cheap stainless steel pot (never to be used for food)
- Boiling water
Followed the iDye Poly instructions. Only dyed for 15 minutes. Also dyed the nylon screws and spacers at the same time.
I could have sanded more in the center areas of the top plate where it is a little lighter. Having a slightly roughed up surface helps the dye penetrate.
Overall, pretty satisfied with the results.