Got some experimental results and a question about painting Plastruct white Butyrate plastic tubing. I am looking for the best method of painting without resulting in the paint chipping off the plastic. In the worst case I can use my finger nail to scratch the paint off fairly easily.
I have tried several experiments varying surface preparation including:
doing nothing
cleaning with mineral spirits
wiping with steel wool
and sanding with 220 grit
I have tried several manufacturers' paints including:
Testors spray enamels including their primers
Krylon fusion for Plastic
A couple of different Rustoeleum primers for plastic
To date the method that has worked the best (though not a cure all) is cleaning with mineral spirits followed by steel wool then either Testor's Zinc Chromate primer or Rustoelumn Automotive Plastic primer.
Has anyone found a better method?
Thanks
Joe
