Heart & Industry

Home · Pottery and ceramics supplies · Potterycrafts

Tiranti Synthetic Onyx Filler Powder

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

Potterycrafts's own words, read from their page.

Buy from potterycrafts.co.ukPrice seen 2026-09-19. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.