On Sun, 14 Jun 2009 13:49:37 +0100, Steve Walker
wrote:

On Sat, 13 Jun 2009 14:40:45 +0100, Geoff Mills wrote:

I know paint technology is a complex science but I usually get away
with it. However, I've been tarting up a pair of old Wharfdale
speakers with spray paint to match the existing grey and black kit and
the finish coat is causing the underlying primer to bubble up on a
small test area.

The primer is "Plasti-kote, Projekt Paint, Primer SUPER" which I
bought from B&Q. I have also bought some Simoniz Acrylic Black as a
top coat. Neither cans give specific details about their chemical
composition but they sure enough don't like each other.

I'm hoping someone can tell me of an intermediate neutral coat I can
apply to avoid having to strip the whole lot back to stage 1.

There are definite compatibility problems between cellulose and some
acrylics, so check what that primer contains. You should still be able to
get away with it if you allow plenty of time for the primer to thoroughly
dry before finish coating - ie: days rather than hours.

SteveW

You were exactly right Steve, A weekend in the airing cupboard made it
possible to spray on a couple of top coats with no bad reaction. The 1
hour drying time written on the can must 've been a minimum.
--
Kind regards,
Geoff Mills