Model Forum / General / Models / April 2008

Thanks, never knew that. Here's one for you:

* drop From:*yahoo.cn

I see a distinct difference between primers and sealers.  To me a
sealer stiffens and seals the wood fibers.  For a sealer I use a 50:50
mix of urethane varnish and thinner.  The wood sands much easier after
sealing.

To me the primer fills small pores, scratches and such, and protects
or moderates between the surface and whatever paint you use.  It does
also make a uniform flat finish which makes it easier to see
imperfections. I now use a primer I learned about on this group many
years ago. It used to be called Krylon Sandable Primer. It is now just
called Primer. It is very full bodied (lots of filler) in it so it
fills small cracks and sandpaper scratches such very nicely and dries
quickly. I have used it under hobby enamels, acrylics and even
lacquers and it seems to stand up to anything. However, it WILL craze
acrylics if used OVER them, and sometimes slightly affects some
enamels, so complete your priming as much as possible before using
color paints.