Selling it

Who inspects you

Updated October 2026

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Alone, there is very little The first employee changes it Waste is the other trigger Then there are the neighbors Insurance will ask Record who told you what The fire service has a view on quantities References

There is no inspector for a resin workshop the way there is for a kitchen. The attention comes from employment and from waste.

Alone, there is very little

A sole maker pouring resin is not operating a regulated facility. The hazard communication standard is a workplace requirement and a workplace with no employees is a different proposition, which is why this craft feels unregulated compared with everything else in this library.

The first employee changes it

Training, accessible data sheets, labeled containers and appropriate protective equipment become obligations rather than good sense. That threshold arrives the day somebody helps out, and most makers cross it without realizing it is a line.

Waste is the other trigger

Uncured resin, hardener and solvent-soaked materials are regulated waste and your volume determines what applies. The rules are local and the thresholds vary, so the question is for your local authority rather than for a general guide.

Then there are the neighbors

Ventilation that exhausts solvent vapor into a shared space or a residential street is somebody else’s problem as well as yours, and it is the complaint most likely to bring attention. Worth thinking about where the extraction actually discharges.

Insurance will ask

Business insurance for a workshop handling flammable and sensitizing chemicals is a conversation with specific questions in it, and the answers are easier if the storage, the labeling and the extraction are already sensible.

Record who told you what

Name, date, what you described and what they said, particularly for the waste question where the answer is genuinely local.

The fire service has a view on quantities

Flammable solvents stored in volume in a workshop are a question for whoever inspects buildings for fire, and the thresholds are lower than people expect. Worth asking once rather than discovering it during an unrelated visit.

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.