Composites, Fiberglass & Advanced Materials worked example

Resin Mix Ratio with resin base amount of 50 parts: a worked example

This worked example runs the resin mix ratio numbers for a tougher week than the baseline: resin base amount of 50 parts instead of the typical 100 parts. Calculate resin-to-hardener or resin-to-catalyst mix ratio for composite resin systems.

The inputs for this scenario

  • Resin base amount: 50 parts (the input this scenario stresses; the baseline uses 100)
  • Hardener, catalyst, or additive amount: 28 parts (held at the documented default)
  • Mix-ratio reporting conversion: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Resin Mix Ratio = resin base weight or volume รท hardener, catalyst, or additive amount.
  • resin mix ratio works out to 1.79 x at these inputs, and this is the headline figure for the scenario.
  • Raw ratio works out to 1.79 value at these inputs.
  • Conversion factor works out to 1 x at these inputs.
  • hardener, catalyst, or additive amount works out to 28 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where resin base amount sits at 100 parts and the headline result is 3.57 x, this scenario comes in 50% below the baseline at 1.79 x.
  • Use it when setting up a batch, converting a data-sheet ratio to your scale, or checking that a measured weigh-out matches the manufacturer's specified proportion. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • resin mix ratio: 1.79 x (headline result)
  • Raw ratio: 1.79 value
  • Conversion factor: 1 x
  • hardener, catalyst, or additive amount: 28 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Resin Mix Ratio calculator, set resin base amount to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.