Alumires (RC-3) Black

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Alumires (RC-3) Black is our original AlumiRes that has been pre-dyed black. It is an easy to mix and pour resin that is great for casting large, durable pieces.

  • User-friendly, rigid urethane
  • Accepts dry fillers exceptionally well

Prior to using product, please read all Technical Data, Safety Data, and Instruction sheets linked below.

$40.32 - $117.60

Technical Specifications

AlumiRes (RC-3)
Mix Ratio:
1:1 by weight or volume
Pot Life:
2 minutes
Demold Time (100 gram mass):
30 minutes
Mixed Viscosity (cps):
Specific Gravity:
Shore Hardness (ASTM D2240):
74 D
Shrinkage (in./in.):
Tensile Strength (ASTM D638, psi):
Elongation (in./in.):
Temperature Resistance:
197º F


  • 5
    Easy and fast

    Posted by Jason Hoatson on Jun 27th 2020

    This product is awesome! It sets up quickly, so be ready to pour after mixing. No need for pressure or vacuum. Easy Easy Easy

  • 5
    Just Mix and GO!

    Posted by Tom McGuire on Jun 8th 2020

    The pot time and darker than black appearance of Alumires is perfect for my production workflow. No color additives, nicely rigid in thinner parts, and lasts a long time if you keep the bottles tightly sealed and away form moisture.