Jesmonite®

What is Jesmonite®?

Established in 1984, Jesmonite® is a water-based, acrylic-modified gypsum composite. It was developed as a safer alternative to fibreglass and a lightweight substitute for cast concrete, and today it's loved by makers for terrazzo trays, coasters, planters, candle vessels and homewares.

Which Jesmonite should I choose?

• AC100 – the most popular all-rounder for casting and laminating. Starter kit and 3.5 kg, 7 kg and 35 kg packs.
• AC300 – designed for exterior use.
• AC730 – a cement-like, more natural stone finish.

Finishing your pieces

• Colour with Jesmonite pigments (a little goes a long way)
• Seal with Jesmonite acrylic sealer or our food grade beeswax sealer
• Use a high shear mixing blade for smooth, bubble-free mixes

FAQ

Why does my Jesmonite have air bubbles?

Read our guide: why your Jesmonite® casts have air bubbles and how to fix it.

Which moulds work with Jesmonite?

Silicone moulds work best – browse our silicone moulds.

Fast NZ-wide shipping from East Tāmaki, Auckland.