Specific gravity

Definition

Specific gravity (SG) is density relative to water at 4 °C, so 1.10 means 1.10 g per millilitre. Slicers report resin volume in ml; bottle prices are per kilogram. Grams = ml × SG. Standard photopolymer is often 1.08–1.12, tough and ABS-like a little higher, some washable and castable resins higher still. Temperature and pigment shift SG slightly.

Calculators that use this

• Resin 3D printing

  Resin Volume to Weight Converter

  Convert SLA slicer volume in millilitres to grams using typical specific gravity for standard, tough, water-washable, ABS-like and castable resins.

• Resin 3D printing

  Resin Print Cost Estimator

  Estimate SLA/DLP print cost from resin volume, bottle price and LCD screen degradation per hour. Toggle millilitres and US fluid ounces.