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8. Disposal
8.1 Guidance for Recycling and Disposal
Refer to the Safety Data Sheet (SDS) and local authorities for guidance on disposing of IPA.
8.1.1
Disposal of resin
Liquid resin (whether pure liquid, dissolved in alcohol, or partially cured) may be classified as
hazardous waste and shall be disposed of with care.
Disposing of empty resin containers:
In the United States, empty resin containers are considered “RCRA empty” by EPA standards
and can be thrown in the garbage as regular waste.
Optional - Triple rinse the cartridge with fresh IPA to empty the resin cartridge of traces of excess resin.
Add the resulting dirty IPA to your solvent waste stream in accordance with governmental regulations.
To dispose of a resin tank:
1. Remove the resin tank.
2. Transfer or dispose of the remaining resin.
3. Pour the resin from the old tank to the new tank or another container. If there is debris or
cured parts in the resin, filter the resin before transferring it to a new tank.
a. Pouring resin back into the original cartridge may risk contaminating the cartridge with
cured resin pieces or debris, which can cause print failures.
4. Use a paper towel to wipe any remaining resin o the old tank.
5. Place the old tank in sunlight (a window sill is fine) or UV light to cure excess resin, and
dispose of properly once cured.
Disposing of liquid resin:
To dispose of pure resin (resin that has not been cured or dissolved in alcohol), add this waste
to your chemical disposal stream.
If you do not have a chemical disposal stream:
1. Pour a small amount of resin into a labeled, resin-compatible container.
2. Leave the container outside, exposed to sunlight to cure for 1-10 days. Expose resin to 405
nm light and heat for the most eective curing. The liquid resin cures to solid material when
exposed to light and heat.
3. Dispose of the fully-cured resin and container in the trash.
Disposing of cured resin or cleaned parts:
Discard cleaned parts and cured (hardened) resin with household items as trash. Cleaned
parts and cured resin cannot be recycled.
8.1.2 Disposal of IPA and solvents
Safe and appropriate disposal methods of used IPA vary by location.
To safely dispose of dirty IPA:
1.
Consult the safety data sheet (SDS) from the IPA supplier as the primary source of information.
2.
Research your local government’s approved methods of disposal. This will most likely
involve hiring a waste disposal service or, for smaller amounts, checking with your city’s
disposal service to see if they have any suggestions for removal.
CAUTION
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