Ecopoxy FlowCast SPR 750ML

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FlowCast® SPR

The Premium Casting Epoxy for Small Projects

The Ideal Casting Epoxy for Weekend Woodworking Projects

FlowCast SPR is a two-component casting epoxy formulated for weekend woodworking projects. When used at one-inch thickness, the maximum volume, and under the recommended conditions, you can expect your projects to demold in 1 day. Use FlowCast SPR epoxy by itself for a water-clear finish or add our liquid or metallic pigments to create custom colors and effects. FlowCast SPR can be used to create beautiful small-scale live edge wood projects, such as coasters and serving trays. For larger projects (such as river tables) use our deep cast resin, FlowCast.

FlowCast SPR can be worked (trimmed, routed, sanded, and finished) using the same tools you have in your woodshop. With our ever-growing line of EcoPoxy® pigments and accessories, we can support you with everything you need for your small-scale epoxy projects.

Used to Create

  • Serving Trays
  • Drink Coasters
  • Decorative Art Pieces
  • Small Encapsulated Objects
  • Other Small Scale Live Edge Wood Projects

Premium FlowCast® SPR Features

FlowCast SPR has been formulated to cure faster making it the ideal casting epoxy for weekend projects. When used under the recommended conditions, and in accordance with Application Guide instructions, you can expect your project to be ready for finishing within one day.

  • Perfect for Small Pours
    With the ability to cast from 1/4" to 1" thick per layer in pour volumes up to 2L, FlowCast SPR is perfect for small-scale live edge wood projects, and small-scale encapsulations.
  • Goodbye Bubbles!
    FlowCast SPR’s low viscosity provides excellent air release allowing trapped air to rise to the surface, significantly reducing bubbles in the cured casting.
  • Hello Clarity
    FlowCast SPR cures to a highly desired transparent water-clear appearance. It can also be combined with Liquid and Metallic Color Pigments, and Polyester Color Glitters to create custom hues, tints, shades, and effects.

FlowCast SPR Product Information


FlowCast SPR is formulated to have a 2:1 resin-to-hardener mix ratio by volume. Deviation from the mix ratio can result in lower mechanical properties or incomplete cure.

Mix Ratio by VOLUME (A:B) 2:1
Mix Ratio by MASS (A:B) 2.5:1
Recommended Casting Thickness 1/4" to 1" (6-25mm)
Processing Characteristics

The table below shows processing characteristics for 6" x 17" (150mm x 430mm) castings poured to depths of 1" (25mm) and 1/2" (13mm). The ambient temperature was 22°C (72°F), with approximately 50% RH. This casting size is meant to represent the typical dimensions of the epoxy portion of a serving tray. Processing characteristics will vary depending on factors such as resin volume, casting geometry, ambient conditions, and mold materials.

1" (25mm) Casting Depth
Working Time Limit 4 - 5 hours
Tacky to Touch Period Not applicable*
Set to Touch 24 hours
Demolding Time 24 hours
Time to Finishing Immediately after Demolding
Full Cure 3 days
1/2" (13mm) Casting Depth
Working Time Limit 6 - 7 hours
Tacky to Touch Period 20 - 32 hours
Set to Touch 32 hours
Demolding Time 40 - 48 hours
Time to Finishing Immediately after Demolding
Full Cure 7 days

Store in a cool, dry, well-ventilated location out of direct sunlight. Protect from freezing and physical damage. Do not store in a location subject to frequent temperature changes as the product may crystallize. Use product as soon as possible after opening. If storing remainder of product for another project, keep container tightly closed.

Recommended Storage Temperature 15-25°C (59-77°F)
Shelf Life 2 years; unopened

Clean up: Denatured/Isopropyl Alcohol or Warm Soapy Water

Download SDS Sheet

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