Acrystal Optima

Acrystal Optima powder
Acrystal Optima powder
  • For larger projects
  • Specially for castings
  • No solvents, no smell

Acrystal Optima is a low-cost casting material. Ideal for larger projects where price is an issue. This material is also suitable for making gel coats so that the surface of the casting can be made with the same material.

Acrystal Optima is water-based, fast-curing and safe to use. It gives a hard surface and is safe for foams such as polystyrene.

Casting Acrystal Optima can be done ideally in silicone moulds.

Features Acrystal Optima

  • UV resistant.
  • Water-based, solvent-free.
  • Safe to use (odour-free, no fumes or toxins).
  • Can be filled with fillers (such as sand and marble) for various effects.
  • Fireproof.

Product properties

Mixing ratio: 1:3 (by weight)
Processing time: approx. 8-10 minutes (the processing time can be extended with a retarder)
Colour: ivory white (can be coloured with pigments)
Hardness: 85 (shore D)
Curing time (90%): approx. 6 hours (at 20°C)
Full cure: after approx. 72 hours

13.3 kg (10 kg powder, 3.3 kg liquid)
80 kg (60 kg powder, 20 kg liquid)

Other acrystal products

Acrystal Optima is suitable for castings. For other applications, we sell other types of acrystal:

  • Laminating: for laminating, use Acrystal Prima.
  • Aquarium: for products that are continuously immersed, use Acrystal Aqua (e.g. suitable for applications in aquariums).


We have a number of recommendations for working safely with polymers. At Polyestershoppen you will not only find the polymers themselves, but you can also purchase all the protective equipment you need from us. If you have any doubts or questions, please contact our customer service. We can give you advice on how to work safely with polymers.

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