Resin Calculator

Estimate the resin volume needed for an SLA/DLP 3D print based on model dimensions or volume, support structures, and hollow vs solid configuration.

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How It Works

This calculator estimates the total resin volume and cost for SLA, DLP, and MSLA 3D prints by accounting for model geometry, hollowing, supports, and waste.

Model Volume

You can input the model volume directly from your slicer, or estimate it from bounding box dimensions:

• Direct volume: Use the exact value from your slicer (e.g., Chitubox, Lychee, PrusaSlicer)
• Bounding box estimate: Volume = Length × Width × Height × Fill Ratio. The fill ratio accounts for the actual model shape within its bounding box

Hollow vs Solid

Hollowing a model significantly reduces resin usage. The calculator estimates hollow volume by subtracting the interior volume based on wall thickness:

• Solid prints use the full model volume
• Hollow prints use only the shell volume, determined by wall thickness. The reduction depends on model size and wall thickness—larger models with thin walls save more resin

Support Material

Support structures are necessary for overhangs and islands in resin printing. The support percentage is applied to the model volume:

• Light supports (5–10%): Simple shapes with few overhangs
• Medium supports (15–25%): Typical figurines and detailed models
• Heavy supports (30–50%): Complex geometry with many islands and overhangs

Volume to Weight

Resin volume is converted to weight using the resin density: Weight (g) = Volume (mL) × Density (g/cm³). This allows accurate cost calculation from bottle size specifications.

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