Originally Posted by
sylvierose
Hey everyone,
I am trying to do up by girlfriend bicycle, it's like a Raleigh 20 style 18" Morrison, and I've had some trouble with doing a final gloss coat.
I sanded the frame down primed it and spray painted it green (with Montana spray paint) but when I used the acrylic gloss I'd bought (of a different brand to the spray paint which is where I think I went wrong!) the green underneath began rising up into tiny little wrinkles, reacting with the overcoat in some way.
I was wondering if to remedy this I will have to strip all the paint off back down to the metal and start over (I hope not!) or if I can just do a vigorous sanding job and reapply the green?
Help much appreciated!
Your paints are fundamentally incompatible. You need to start over from bare metal and use compatible paints from bottom to top. The second easiest way to do this is buy paints from the same manufacturer, and then verify that they're compatible before spraying the frame. The easiest way to get where you're going is to take the frame and fork to a powder-coater:
http://bikeportland.org/2009/02/04/b...ur-bike-video/