ORIGINAL: sparky4lawndart
Leroy... I've run into an issue... I'm using the DupliColor high fill primer (as directed). 3 coats, 10 minutes apart, wait an hour and then dry sanded with 220 and then wet sanded with 400.
next day I put on 3 coats of sandable white primer... it looked terrible. did not cover welll at all... I wet sanded most of it off. The resulting surface is highly polished but a mix of the ruddy red from the highfill primer and white streaks from the second primer.
do I paint on that?
DupliColor Ford Blue and Ford White.
Sparky when you primer with the high build and sand it off you should expect to see light and darker spots, remember it's just a filler. I don't put several coats on and start sanding, that's not how you fill weave and imperfections, it's also where the work is involved. Fill and sand, fill and sand and fill and sand and only after the filling is finished do you put a uniform primer coat / coats on and lightly sand it to loosen over spray and wash down after a vacume job to get the dust out of cracks and whatever prior to painting. Do not sand any finer than 600 grit, 500 and 400 is ok also just don't sand it any more than required to get the dust loose. Base / filler coats I sand with 320 grit, do not wet sand those base coats. When your done with the paint prep it will be slick with some shine.
If your paints are not transparent then your base can be a bit blotchy and have no effect on the finish what so ever. There can be short cuts for painting a RC plane or anything else for that matter, I just don't use them and doing it as cheep as you can go generally will lead to problems you don't need at this stage. Sounds like your ready to paint, always paint the light colors first if possible, you'll do just fine.