if you make the handplates out of raw latex and then paint them, they will chip.
but if you mix hobby acrylic white INTO the latex at the time you're pouring into the mould
then the paint is completely bonded to the surface.
you can apply latex mixed with acrylic paint on top, and they will not chip
because the latex bonds to the surface.
the mould builder latex has ammonia in it, and the acrylic paint chemically bonds
to the latex.
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if you think using "latex" house paint will work... it does not bond to the latex.
these are different kinds of chemical setups, so you have to mix the right
two kinds together to get it right.
the latex handplates are not glossy either, so the perfect solution is to
mix acrylic model paint from hobby lobby, or jo ann's into mould builder latex.
you can then lightly paint with a wide brush.
making them yourself, allows you to paint them to match, with
the right mixture of white, and blue, or white and yellow to
match the armor.
in the screen used latex sets, they didn't match the armor color, just like the
helmets.
in the photos above you can see that I've poured/brushed on a thin 3 coats of paint/latex mixture
into my own ABS handplates as a mould. then brushed on, filled in with raw latex on the bottom.
I could have painted the bottom with latex, and it NEVER CHIPS!
best way is to mix the color AS you MOULD them!