This
process covers giving a patina effect to objects that have been
given a metallised appearance but are not necessarily metals
in themselves. It covers polyester and epoxy resins. polyurethane
resins and polyurethane foams. We have also used it successfully
on wood plaques treated to give a finish resembling metal.
If you are using any of the resins ,cast them without using
any metal powder in the casting.
Surface
Preparation:
Prepare the surface thoroughly by removing any mould release
or grease and then lightly sand or sandblast. Some manufacturers
of silicone and polyurethane mould materials make mould release
removers. If this is not available use methylated spirits and
/or an industrial metal cleaner/degreaser. Use a scotch brite
pad or similar with these solutions to rub and clean the surface.
Once clean, rinse and then dry before sanding with 110-220 sandpaper,
sandblasting or even steel wool to get a slight tooth to the
surface. Polyurethane surfaces require using a metal primer
after sanding.
Metal
Coating the Surface:
The surface is now ready for the application of the Sculpt Nouveau
Metal Coating B. This may be brushed on , however it does not
self level, being so heavy bodied, so brush marks will remain
if not removed before drying. Applying cool air to the surface
will help to remove the brush marks. We found when doing test
pieces that a better method is to use a spray gun with a nozzle
with a wide opening. The Wagner airless gun worked quite well.
Apply the first coat of Sculpt Nouveau Metal Coating B and let
it cure for 6 hours. This time may be shortened by using a hair
drier or heat gun.
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