Tiranti Synthetic Onyx Filler Powder
Potterycrafts
£3.71
Alumina Trihydrate (ATH) is an off-white to cream-coloured filler that produces excellent translucent effects, closely resembling natural onyx and certain types of marble. When added to clear casting resins, ATH reduces transparency to create an opaque, milky-white, or off-white finish. For a brighter white appearance, compatible white pigments can be added. ATH can be incorporated into casting re
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