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EcoPoxy FlowCast Hardener | Hardener for crystal-clear casting resin

EcoPoxy FlowCast Hardener – The key component for perfect casting results

The EcoPoxy FlowCast Hardener is an essential component of the FlowCast system. It has been specially developed to form a crystal-clear, extremely stable bond when used in combination with FlowCast resin. Thanks to its bio-based formulation, this hardener is low-odour and makes for a pleasant working experience, even on large-scale projects such as river tables or deep castings.

Optimised curing for deep castings

This hardener is designed for low exothermic reaction. This means that the chemical reaction during curing is controlled and slow, minimising heat build-up. This prevents stress cracks and yellowing, even when casting layer thicknesses of up to 38 mm (1.5 inches) in a single operation. The long pot life also gives you plenty of time for careful processing.

Technical Highlights & Application

Precise Mixing Ratio

Optimised for the FlowCast ratio of 2:1 by volume. Careful measurement is crucial for crystal-clear results.

Bio-based & Safe

A high proportion of renewable raw materials ensures an environmentally friendly product without aggressive fumes.

Brilliant finish

When combined with the resin component, it creates a surface with excellent UV resistance and transparency.

Versatile applications

  • River Tables : The ideal choice for deep pours in combination with wood.
  • Artistic objects : Perfect for encapsulating objects in crystal-clear resin.
  • Furniture making : Production of solid epoxy resin panels and design elements.
  • Jewellery design : Casting of larger blanks, which are subsequently machined.

The advantages of FlowCast hardener at a glance :

  • Crystal-clear curing : No clouding, for visually demanding projects.
  • Excellent degassing : Bubbles rise reliably during slow curing.
  • High load-bearing capacity : Once fully cured, an extremely hard and durable surface is created.
  • Sustainability : Part of the world’s leading bio-based epoxy system.

Important application note

To achieve the best results, the hardener should always be mixed in the exact prescribed volume ratio of 2:1 (resin to hardener). Ensure a clean working environment and a constant room temperature. Only thorough mixing of both components will produce a chemically stable and tack-free surface.


Safety note: Always wear suitable protective equipment (gloves, eye protection) during application. Refer to the current safety data sheet from the manufacturer EcoPoxy.

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EcoPoxy – Sustainable Epoxy Resins for Design & Furniture

EcoPoxy develops bio-based epoxy resins for design, furniture making, and creative applications. The products are known for their high clarity, ease of use, and strong focus on sustainability.

Learn more about EcoPoxy and explore the full product range on our EcoPoxy brand page in the shop.

Manufacturer details in accordance with GPSR:
EcoPoxy EU AG
Bahnhofstrasse 10
6300 Zug, Switzerland
[email protected]

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