3D resin handling and waste disposal
3Dresyns photopolymer resins are reactive manufacturing materials. Handling requirements depend on the specific Product/version, so the applicable Safety Data Sheet (SDS/MSDS) and Instructions for Use (IFU) must be reviewed before use.
Do not infer universal safety, biocompatibility, VOC status, PPE exemptions or disposal classification from portfolio names, “monomer-free” positioning or the absence of a particular hazard pictogram. Hazard classification and required controls are product-specific and are defined by the applicable SDS, process and local regulations.
3D RESIN SAFE HANDLING & WASTE DISPOSAL
3D resins for 3D printing cure fast and release heat when exposed to UV & Visible light and high temperatures, consequently 3D resins need to be handled carefully.
MATERIAL SAFETY DATA SHEETS MSDSs
- Before use, review the current SDS for every resin, additive, cleaning fluid and other auxiliary involved in the workflow. The SDS is the primary source for classification, hazards, first-aid measures, handling, storage and disposal information for the material as supplied.
SAFETY BASICS
- Do not eat, drink or smoke in the working area
- Always wear gloves and avoid direct skin contact with 3D resins, prints before cleaning, and with contaminated surfaces and materials
- Rinse and wash hands, face, eyes, and any part of the body which was in contact with 3D resin
- rinse with plenty of water for some minutes followed by washing with a mild soap
- Remove and wash contaminated clothing
- Do not reuse any contaminated clothing
PERSONAL PROTECTIVE EQUIPMENT
- Use eye, skin and other personal protective equipment specified by the applicable SDS and workplace risk assessment. UV/near-UV light sources may also require suitable eye protection according to the equipment manufacturer’s instructions.
- When sanding or mechanically finishing cured prints, control generated dust using suitable engineering controls and respiratory protection where required by the risk assessment and applicable SDS.
- Respiratory protection, ventilation and any organic-vapour filtration requirements must be determined from the specific material SDS, process emissions and workplace risk assessment; odour alone is not a reliable hazard indicator.
- Do not assume respiratory protection is unnecessary because a material is described as low-odour or VOC-free. Confirm the current product-specific SDS and process conditions.
BASIC PRINTING PROCEDURES
- Maintain clean, controlled working conditions and follow the applicable SDS, IFU and printer/equipment instructions.
- Do not heat liquid resin outside the storage or processing limits stated in the applicable product documentation. Uncontrolled heating can accelerate reaction or curing and may create an exothermic hazard.
- Any high-temperature processing or storage condition must be explicitly supported by the specific Product/version documentation.
- Keep liquid resins away from ignition sources where required by the applicable SDS and workplace controls.
- Flammability and VOC-related precautions are product-specific; use the SDS classification rather than a portfolio-wide assumption.
- Do not expose liquid 3D resins as supplied to light to avoid their premature cure in the original container or in the resin tank
- to prevent their photopolymerization or curing (exothermic reaction)
BASIC POST PRINTING & POSTCURING PROCEDURES
- Wear gloves when handling parts directly from the printer
- Clean printed parts using a cleaning fluid and procedure compatible with the specific resin and validated workflow. See the cleaning-fluid collection: non flammable cleaning fluids. Follow the cleaning-fluid SDS and the relevant IFU.
- Post-cure prints using the wavelength, time, temperature and equipment conditions specified or qualified in the relevant Instructions for Use IFU for the Product/workflow.
- Before use, confirm that cleaning and post-curing acceptance criteria appropriate to the intended application have been met.
- For workflows with biological-evaluation requirements, final suitability depends on the complete printed specimen, cleaning/post-curing process and application-specific validation.
- Where extractables or leachables are relevant, define analytical or process controls appropriate to the specific material, intended use and applicable standard or risk assessment.
CLEAN UP WORK AREA
- Clean any exposed surfaces to prevent contamination
- Clean work surfaces using a compatible cleaning agent, including applicable 3Dresyns cleaning fluids, and follow the cleaning-product SDS/IFU; do not assume a cleaner is non-flammable or universally suitable.
- Use absorbent paper towels to clean spills
FIRST AID PROCEDURES
- Rinse exposed eyes or skin thoroughly with plenty of water for 15 minutes
- Wash skin with a mild soap and plenty of water
- If strong skin irritation or rash occurs, read the MSDS for advice and seek qualified medical attention
- If ingested, do not induce vomiting. Seek medical attention immediately
STORAGE
- Keep 3D resins sealed tightly in the original containers as supplied, or in opaque black containers, out of direct sunlight or office light, ideally at room temperature or cold, but always below 50ºC to prevent their premature thermal and photo curing
- Do not pour used, uncured resin back into new resin bottles to prevent cross contamination
- Do not store 3D resin in refrigerators used for food and beverage storage
WASTE DISPOSAL
- Do not assume that cured resin can be disposed of as ordinary household waste. Waste classification and disposal depend on the specific material, degree of cure, contamination, jurisdiction and local waste-management requirements.
- Do not intentionally bulk-cure liquid resin waste unless the product-specific instructions and local waste rules allow that treatment. Manage uncured resin and contaminated residues according to the applicable SDS and authorised local waste route.
- Liquid resin waste and contaminated process materials may require hazardous-waste handling depending on the product classification and local regulations. Follow the current SDS and local requirements.
- Do not apply a generic “paint/enamel/varnish” waste classification to all resins. Use the waste code/classification required for the specific waste stream and jurisdiction.
- Do not pour liquid resin, contaminated cleaning fluid or process wastewater into sinks, drains, soil or surface water unless an authorised treatment/discharge route explicitly permits it.
- Water used to dissolve or wash water-soluble printed materials is a contaminated process stream. Filtration, curing, evaporation or discharge should be used only where supported by the material/process documentation and permitted by local waste and wastewater rules.
REUSE
- Cleaning-fluid reuse should be performed only when supported by the relevant cleaning-fluid instructions. Reuse can change contamination level and cleaning performance; spent fluid and separated solids must be managed according to the applicable SDS and local waste rules.
- Filtered resin may be reused only where the Product IFU permits it and where contamination and material-quality risks are controlled. Do not return used resin to the original supply container unless specifically instructed.
*Note: some resins can/may cause skin and eye irritation and other hazards (read the MSDS of each material before handling them)