Green Part Handling and Safety

Since printed parts are not fully cured until after spending the appropriate time in post-curing, you must follow all the same resin guidelines as if handling resin directly. Before post-curing, parts go by the term green.

   NOTE: For complete safety information and instructions for use, please read the SDS and User Guide for the Figure 4 resin you are using. These documents are packaged in with each bottle of resin.

safety glassessafety gloves

HARMFUL IRRITANT WARNING: Always wear chemical-resistant gloves, goggles and protective clothing when handling RESIN/green parts. Avoid skin contact. Avoid breathing RESIN fumes.

  • Always practice standard lab hygiene and follow Personal Protective Equipment (PPE) requirements outlined in this manual.
  • safety glassessafety glovesAlways wear chemical-resistant gloves, such as nitrile, when working near green parts. It is recommended to wear approved goggles and protective clothing. Protective clothing includes, but is not limited to: closed-toed shoes, full-length pants, and splash-resistant lab coats (long-sleeved) or equivalents. 3D Systems recommends using 100% nitrile gloves; however, other chemical-resistant gloves will suffice. Do NOT use latex gloves, as they do not provide complete chemical protection.
  • Wearing contact lenses when working with green parts is not recommended.
  • Avoid breathing in vapors from curing parts. To avoid breathing in vapors: when opening the lid, allow a few seconds to pass before putting your face near the opening. Your facility may require that UV Curing Unit 350 vapors be vented to outside air. Providing an interface for such ventilation from the machine is the sole responsibility of the customer.
  • Always wash skin thoroughly with a nonabrasive soap and COLD water after working with green parts. DO NOT USE HOT WATER OR SOLVENTS to wash hands, as these will stimulate your pores and result in absorption through the skin. Uncured resin is sensitizing and can cause bad allergic reactions if absorbed through the skin. A person who becomes sensitized to resin should not work around that material in the future.
  • If a small amount of resin gets on your clothing, remove the article of clothing as soon as possible (it might be a good idea to have a change of clothes on hand just in case). Have contaminated clothing dry cleaned. DO NOT wash in a regular washing machine that drains into wastewater. If a particularly large amount of resin gets on your clothes, it is best to discard them according to all local, state, and federal regulations. Keep contaminated clothing away from food and drinks. Wash hands thoroughly after handling contaminated clothes, even if you wore protective clothing/gloves to handle them.
  • Keep all green parts away from heat, sparks, static discharge, and flame.
  • Fire fighters should use a self-contained breathing apparatus and full protective clothing in the event of a resin fire.
  • Do not leave green parts in an area where persons who are not knowledgeable about their handling or use may have access to them.
  • Keep green parts away from food and drinks.

WARNING: USE FIRE EXTINGUISHERS SUCH AS CARBON DIOXIDE, DRY CHEMICAL, OR FOAM. A SPRAY OF WATER MIGHT ALSO BE EFFECTIVE. DO NOT USE A DIRECT JET OF WATER OR SMOTHERING TO EXTINGUISH BURNING RESIN OR SOLVENTS.

 

Resin Characteristics

The photopolymers used in the resins may be hazardous if handled improperly. Repeated skin contact with resins may cause sensitization. Consult the manufacturer’s Safety Data Sheet (SDS) for information on specific resins. For further information on this and related topics, consult the 3D Systems Materials website.

Resin Disposal

Dispose of green parts according to the guidelines given in the SDS included with the resin and according to all government regulations.

Contamination

Care should be taken when cleaning panels and other parts of the UV Curing Unit 350. The unit is likely to have uncured resin on it, which requires special cleaning instructions. Please see the section Preventative Maintenance for more information.