Deep pour epoxy resin calculator
Deep pour is the resin category for deep fills: river tables, molds and pieces several centimeters thick. Here is what sets it apart from a regular resin, how to calculate the amount, and when you still have to split into layers.
What a deep pour resin is
It is a resin formulated to be poured in thick layers (up to 5-6 cm) without the reaction running away. It cures much more slowly than a coating to dissipate heat, which avoids the overheating, cracking and yellowing you get from pouring a thin resin too deep.
How much deep pour resin you need
Since you are filling a volume and not a surface, the calculation goes by volume: length x width x depth (in cm) gives the cm³, and multiplying by the density (~1.1 g/ml) gives the mix weight. Add a 10% margin. For irregular shapes, measure the width at several points and average it.
When to split into layers
Even a deep pour has a maximum depth per layer. If your piece exceeds it, you have to pour in several layers and wait 16 to 24 h between each. The calculator detects the product limit and splits the pour automatically.
Example: deep mold
- Dimensions
- 20 × 20 cm
- Depth
- 6 cm
- Volume
- 2,400 cm³
- Mix (+10%)
- ≈ 2.9 kg
- Layers
- 1
Note: At 6 cm deep you definitely need a deep pour resin; a coating would crack.
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Calculate my pourFrequently asked questions
What is a deep pour resin?
A resin formulated to be poured in thick layers (4-6 cm) without overheating. It cures slowly to dissipate heat, which avoids cracks and yellowing in deep pieces.
How deep can a deep pour go?
Typical deep pours allow up to 5-6 cm per layer. If your piece is deeper, you have to split the pour into several layers with a 16-24 h wait between them.
Can I use deep pour for thin pieces?
Yes, but it cures much slower than a coating and is overkill for layers a few millimeters thick. For thin finishes (coasters, paintings), a coating is more practical.