How accurate are resin volume estimates?

Volume estimates are typically accurate to within 10-15%. The main variables are support density (which varies by model geometry) and hollowing effectiveness. Your slicer gives the most accurate estimate after slicing.

Should I hollow my resin prints?

Hollow prints larger than 30mm in any dimension to save resin and reduce cure times. Use 1.5-3mm wall thickness. Always add drain holes (2-3mm diameter) at the lowest point to allow uncured resin to drain out.

How much resin do supports use?

Supports typically add 10-30% extra resin. Light supports use less but may fail; heavy supports waste more resin but are more reliable. Tree-style supports generally use less resin than full-contact supports.

How many prints can I get from a 1kg bottle?

A 1kg bottle of standard resin is approximately 900-1000ml (density varies). A typical miniature (28mm scale) uses 5-10ml, so you can get 90-200 miniatures per bottle. Larger prints use proportionally more.

3DPrintCalcs

Resin Volume Calculator — Print Resin Usage

Estimate how much resin a print will consume based on model volume and supports.

Model Volume (solid)

From slicer or CAD

Support Material

Extra resin from supports, as % of model volume (typically 10-30%)

Hollow Wall Thickness

0 = solid print

Number of Copies

Enter the total quantity

How We Calculate This

Resin Volume Formulas

Effective volume = Model volume x Hollow fraction (if hollowed)
Solid volume = Effective volume x Copies
Support volume = Solid volume x Support percentage
Total volume = (Solid volume + Support volume) x (1 + Waste fraction)
1 cm³ = 1 ml of resin

Hollowing reduces the effective volume significantly. A 2mm shell on a 30mm cube uses roughly 35% of the solid volume (9,424 of 27,000 mm³). The support percentage depends on model geometry — overhangs and islands need more support. A small waste buffer is then added on top for resin lost to rafts, over-cure, cling and tank residue.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.