Forgive me if this is not the place for this, but I can't seem to find the info anywhere! I'm spray-painting artworks using automotive paints, the same basic materials I believe the airbrusher uses, and Iv'e hit a block which I really need help with. What I tried - I sprayed a red metallic colour base (using Glue Devil from a can), once dry I lay a vinyl stencil and sprayed a 2k silver with spraygun. The 2k softened the base metallic colour (and actually mixed with it to give a slightly metallic pink - no silver!) and also reacted with the vinyl. Total disaster! What I'm trying to figure out - how to stop the two paints reacting. I thought maybe laying a coat of clear (2k) between the red metallic from a can, and the silver 2k. I did an experiment and the clear coat works fine over the red metallic, hardens and cures well, but the 2k silver ontop of the clear coat does not work - it softens the clear coat AND the red metallic beneath it! The problem I think could be solved if I could find a silver metallic sprayable acrylic (not from a can - they all go dull flat lead with any lacquer or clear coat, even epoxy dulls them to lead) which I could spray ontop of the clear coat, and then spray another clear coat ontop of that. This is a complex challenge needing a little light.