Re: Timid but determined Glasstream restoration
A lot of the changes in Imron have to do with complying with the VOC requirements........EPA saving us from ourselves again..... One thing to keep in mind, Imron is a polyurethane, and chroma base is a urethane. I did some research and I couldn't find much that was difference between the two types of chemistry. Dupont also makes a brand of paint called Nason. They have similar lines and it is cheaper, sort of a Cadillac and Chevy kind of thing. I went with the Dupont, for two thing reasons. 1) I wanted a Cadillac finish and didn't want to take short cuts after all that sanding! 2) My paint store guy said Dupont has more solids in it than Nason.....that is why Dupont cost more . (plus it says Dupont =$$$$$)
Bob I did use a Nason two part non-shrink high build primer. (Euro, I think is what its called) It is great for getting scratches and imperfections out. If you get the hull down to 80 grit you can spray it on and wet sand it down to 400#, then you are ready for paint. You really don't need it unless you have a lot of sins to cover up. It will cover up a ton of sins, I'm sure you remember what Miss Morgan looked like! Think of it as makeup for boats, lol!
Once I had it down to 400, I shot a urethane sealer on it right before the paint. (you spray it, wait 20 minutes or so, then paint. If you wait overnight you have to do more sanding!) I wanted to have an even base color, since automotive paints (especially metallic and red) can be fairly transparent.
As for spraying Bob, the base coat is hard to screw up, it dries almost instantly. The clear coat is a little tricky, but not any harder than spraying a finish on wood. Just make sure you get a nice consistent wet coat. You also have to keep a "wet edge". If you work your way around from one side back to your starting point, you may find that it doesn't burn into the paint you put on first because it has tacked up already. I painted some on one side, then switched, back and forth till I worked my way from the front to the back.