Essential Tools and Preparation

Gather measuring implements and choose the right epoxy for your task. Proper preparation, including assessing your project’s shape and complexity, will save time and waste later. Rely on comprehensive kits or specialist products when tackling unique or large-scale projects.

Step 1: Measure Your Project Dimensions

Begin by measuring the length, width, and desired depth (thickness) of the surface or mould you plan to fill with epoxy resin. Use a reliable measuring tape or ruler and record each dimension in centimetres or millimetres. Accurate measurements are essential, as even small differences can lead to significant over- or underestimation of resin required.

For shaped projects, like river tables or artistic castings, break the area down into rectangular or other simple geometric sections. Calculate each individually, then add together to find the total volume.

Step 3: Factor in Overages and Pouring Limits

It is recommended to add 5–10% extra to your total calculation, accounting for spillage, mixing losses, or absorption into porous surfaces. For deep castings, check the manufacturer’s guidance about maximum pour thickness per layer. Deep pour products like “EpoxyTable 5-Five” and “Epoxytable 10-Ten” allow pours up to 5cm or 10cm in a single layer to avoid overheating. For thicker pours, calculate for each layer separately.

“River-Table” kits provide guidance for the standard wood-to-resin volume ratio, but always double-check against your specific measurements. Calculating layer by layer helps manage exotherm and ensures a safe, bubble-free cure.

Tips and Common Mistakes to Avoid

• Check your dimensions twice before mixing resin, as corrections are not possible once pouring begins.
• Avoid underestimating volume on uneven or porous surfaces; overestimate slightly for complete coverage.
• For deep pours, calculate per layer if required and respect the maximum allowed per instruction manual.
• Always account for overage to prevent shortages and lost working time.
• If unsure, use digital resin calculators available from specialist product pages.

Visualising Your Calculation

Sketch your dimensions and mark resin depth on your project before measuring, ensuring no volume is missed. Visual planning increases your accuracy and confidence before you mix and pour epoxy resin.