Getting started

What it costs to start

Updated October 2026

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The protection comes first Ventilation is the line people skip The resin itself Molds are the quiet capital cost Waste disposal is a real line Price it with the loss in Buy the small size of a product you have not used References

The materials are cheap to try and the protective equipment is not the place to economize, because it is the only thing standing between you and a permanent problem.

The protection comes first

Nitrile gloves, in quantity, changed often. Latex is not a barrier to epoxy and a reused glove is worse than none because it holds resin against the skin.
Eye protection, because mixing splashes and a splash to the eye is an emergency.
Ventilation, and for some products a respirator with the right cartridge rather than a dust mask.
Disposable covering for surfaces, because cleanup with solvent is its own exposure.

Ventilation is the line people skip

It is the most expensive item and the least visible, so it is the one that gets postponed. Working in a spare room with the door shut is the default arrangement for a lot of makers and it is the arrangement that produces the exposures nobody notices.

The resin itself

Priced by volume and it adds up faster than beginners expect, because castings are solid rather than hollow. A piece that looks small can take a surprising amount, and the waste from a mixing cup is real on every pour.

Molds are the quiet capital cost

Silicone molds wear out, and a mold you make yourself consumes silicone that costs more per volume than the resin does. For production work the mold is an asset with a life, and costing a piece without amortizing its mold is how a product looks profitable and is not.

Waste disposal is a real line

Uncured resin and solvent-contaminated rags are not household waste, and the rules depend on where you are. Worth asking about before you have a bin full rather than after.

Price it with the loss in

Failed pours, bubbles, cloudy pieces and demolding damage are routine while learning and never reach zero. Build a failure rate into the costing from the start, because the material in a ruined piece is gone.

Buy the small size of a product you have not used

Resins differ in viscosity, pot life, clarity and how they take a pigment, and none of that is obvious from a description. A liter of something that turns out wrong for your work is more expensive than three small bottles of three candidates.

References

29 CFR 1910.1200, Hazard Communication. Paragraph (f) sets what a shipped container must carry: product identifier, signal word, hazard statements, pictograms, precautionary statements and the name, US address and US telephone number of the responsible party. Paragraph (g) requires a safety data sheet, in sixteen numbered sections. law.cornell.edu

16 CFR 1500.3, definitions under the Federal Hazardous Substances Act, which reaches products sold to consumers. A hazardous substance includes a “strong sensitizer”, defined as “a substance which will cause on normal living tissue through an allergic or photodynamic process a hypersensitivity which becomes evident on reapplication of the same substance.” law.cornell.edu

Written from federal regulation and published safety guidance, not from a laboratory. Epoxy sensitization is permanent and cumulative, and nothing here is a substitute for the safety data sheet for the specific product you are using or for a conversation with your state about what you may sell. Read the SDS for your resin, not a summary of somebody else’s.