If you are planning a model railway layout then you are likely making some crucial decisions, one of which will be...
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What paint do I use with Hydrocal?
Hydrocal can be easily painted using acrylic paints.
Hydrocal is a plaster-like substance many modellers use for moulding scenic items such as bricks, stones and rocks. It is a lot lighter than plaster of Paris and does not crack.
Once set, Hydrocal can be treated with a wash to accentuate details such as mortar lines or rock crevices. Further coats of paint can be applied in varying thicknesses to build up a desired effect.
Hydrocal is waterproof once completely cured, so using water-based acrylic paint will not cause a problem.
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