Resin
Approved
Silicone resin
Light-curable silicone printing material. Formlabs describes Silicone 40A as a silicone formulation without acrylate or monomer additives, which is why it does not carry the methacrylate resins' sensitisation classification.
Never do this
Never pour uncured resin or resin-contaminated wash solvent down a drain. It goes in the designated resin and solvent waste stream.
Hazards
Chemical Contact / Splash
Controls in place
Same containment approach as the methacrylate resins: enclosed printing, closed wash station, gloves for uncured material. The isopropyl alcohol used at the wash stage is the ventilation driver, not the silicone.
Not permitted on
No machines are listed as prohibited for this material. That is not an approval — follow the requirements on the machine you are using.
Good to know
This is a separate record from the methacrylate resins for one reason: so it does not inherit their skin-sensitisation warning. A false warning on a material that does not have the hazard erodes the true ones.
Uncured material should still be kept off skin and handled with gloves, and the wash and cure stages still use isopropyl alcohol, which brings its own flammable-solvent hazard from a separate record. Verify against the current product SDS before relying on any of this.
Documents
Document
Type
Status