Water-washable resin resin: the numbers

Water-rinsable photopolymer resin. Typical uses: miniatures, hobby models, home printing without IPA, classroom prints.

1.1 g/cm³density (1.02–1.2)

1.5%linear shrinkage

$28typical per litre ($20–40)

55 °Cmax service temperature

2/5difficulty · low strength · rigid

Printing tips

Wash in water, but never pour rinse water down the drain; cure it in sunlight and dispose as solid waste.
Dry fully before UV curing or the surface stays tacky and can crack.
More brittle and absorbs moisture over time; not for load-bearing parts.

How much does Water-washable resin cost per print?

At ~$28 per litre, a 30 mL miniature uses about $0.84 of resin before IPA, electricity and failures. Use the resin cost calculator for your figures.