Formula and example
How it is calculated
for mass ratio: mA = V × A / (A/ρA + B/ρB); for volume ratio: VA = V × A / (A + B)
Worked example
300 ml cavity with 10% reserve requires 330 ml mixture. The exact quantity of each component depends on the ratio and densities specified in the datasheet.
Things to check
- Initial ratios and densities are calculation examples. Use the datasheet for your specific resin and hardener; mass and volume ratios are not interchangeable. Do not adjust curing time by modifying the ratio.
- Volumes are considered additive; curing shrinkage is not modelled. This is the total material requirement, not a single mixable batch or permitted layer thickness. Manufacturer specifications for layer thickness, batch size and safety are binding.
Frequently asked questions
Can the 2:1 mass ratio and volume ratio be interchanged?
With different component densities, they yield different results. Always choose the basis specified by the datasheet. Converting to the other unit requires both densities.
Can I mix the entire result at once?
The calculator computes the total material requirement. Due to heat generation from the resin, the permitted batch size, layer thickness and waiting time are product-specific and prescribed by the manufacturer.