West System West System 105 Epoxy Resin — Mix Ratio & Calculator
Professional marine-grade epoxy for boat building, structural repairs, and woodworking. Used with 205 or 206 hardener depending on temperature.
| Volume Mix Ratio (A:B) | 5:1 |
| Weight Mix Ratio (A:B) | 5:0.86 — use this for scale mixing |
| Max Pour Depth | 0.125" / 3mm |
| Ideal Temperature | 72°F |
| Full Cure Time | 24 hours |
| Viscosity | 1000 cps |
| Coverage | 12 sq ft/gal |
Safety Note
The weight ratio (5:0.86) is NOT 1:1. Resin and hardener have different densities. Using a 1:1 scale ratio will result in incorrect curing. Always mix by weight using the ratio above.
The weight ratio (5:0.86) is NOT 1:1. Resin and hardener have different densities. Using a 1:1 scale ratio will result in incorrect curing. Always mix by weight using the ratio above.