Resin should be handled with care. Proper handling will ensure safe printing and efficient use. Always consult the SDS (Safety Data Sheet) as the primary source of information to understand safety and handling of Formlabs materials.
Store resin in a cool, dry place out of direct sunlight. The operating temperature for Formlabs printers is 64–82 °F (18–28 °C). For optimal printing, do not exceed this range in storage. Keep containers closed, and do not pour unused, liquid resin back into the original container. Avoid ignition sources. To reduce the risk of pigment settling, resin containers should be gently shaken once a month in storage and before beginning a print. Before starting a print, agitate or stir resin in the tank.
Safety & Handling
All Formlabs resins are designed to be similar or safer to handle as other household chemicals or adhesives, with little to no vapor and no acute toxicity on skin contact or ingestion. The safety data sheets (SDS) are up to date for every resin product and follow the latest government guidelines. Always consult the SDS as the primary source of information to understand safety and handling of Formlabs materials.
Use chemical-resistant gloves - such as nitrile or neoprene; do not use latex - when handling liquid resin, including when removing printed parts from the printer. Exposure to resin in the liquid form can cause mild skin irritation for some people. If you get any on your skin, make sure to wash thoroughly with soap and water before moving on to other activities. Do not use solvents to wash hands, face, or any body parts. Wear gloves and use alcohol, followed by soap and water, to clean tools after handling resin. See the safety data sheets (SDS) for more detailed chemical information.
First Aid: in an emergency, always refer to the safety data sheet and/or seek help from a medical professional. Contact +1 617 702 8483 for assistance interpreting the SDS.
WARNINGUnless specifically indicated, Formlabs resin is not approved for use with food, drink, or medical application on the human body. Do not attempt to use printed parts for purposes other than the described application. Never ingest resin. Do not eat, drink, or smoke in the printing work area.
Like all chemicals, Formlabs resin has a finite lifetime. For best printing results, resin should be used or disposed within one year (12 months) of production. The optimal life of resin can be ensured by proper storage and use; ensure that resin is never returned to the original container and resin containers are periodically shaken to agitate the mixture. Resin that has expired may cause your prints to fail.
Each bottle or cartridge of resin includes a lot number, sometimes indicating the year of production followed by the month and date. For bottles, the lot number and/or best use date are located on the label; for cartridges, the lot number is on the underside, near the dispensing valve. If the bottle or cartridge lot number is formatted YYYYMMDD-##, add one year to the lot number for the best use date. If the bottle's lot number is formatted YYYY/#######, please contact Support and include the lot number to verify the resin's expiration date.
TIP:The lot number is 8-10 digits and is different from the formulation code. The formulation code begins with FL, immediately followed by four letters and two numbers. For example, a cartridge of Tough Resin may have formulation code FLTLTO02 and lot number 20160302. This resin is best used before March 2017.
The remaining liquid resin in the tank can be used for your next print, but should not be returned to the original bottle or cartridge to avoid potential contamination. Keep unused resin in the resin tank. The orange acrylic of the tank and printer cover will protect your unused resin from ambient light. To avoid possible exposure to light or heat, use the resin tank lid when storing resin outside the printer and store resin tanks away from direct sunlight. Make sure to check the resin tank for clarity of the optical window and consistency of the liquid resin before starting a new print.
WARNINGMixing resins could result in failed prints and machine damage. Only use one type of resin with each resin tank. Formlabs products are tested and recommended for use with Formlabs resins; other materials may trigger safety concerns.
Transferring Resin with Form Funnel
The last 50 mL of resin can be difficult to get out of the bottle. The Form Funnel holds one bottle inverted over a second, to allow the resin in a nearly-empty bottle to trickle into a fuller one. It's designed to fit closely over both bottle tops, eliminate UV exposure, and permit users to get every last drop of resin into their Form 1+.
TIP:With the Form 2, resin cartridges are designed to optimize resin flow and dispense efficiently. They do not require additional draining.
To Use the Funnel:
- Wait until you have a bottle that no longer easily pours, but still contains a bit of resin.
- Place the Form Funnel on a fresh bottle of resin with the arrows pointing down.
- Quickly turn the nearly empty bottle over and nest it in the Form Funnel.
- After approximately 20 minutes, the remaining resin will have drained into the fresh bottle.
Download the pre-oriented .FORM file to print the funnel. You can print at 0.1 mm layer height.
Using Multiple Resins
It can be challenging to fully clean a resin tank without smudging the optical path. For the best printing results, use a different resin tank with each type of Formlabs resin. Extra tanks are available through the Formlabs Store. With a separate tank for each resin type, switching print materials between prints is as easy as cleaning the build platform and switching the tanks. For Standard resins, cleaning the resin tank to change resins is possible, but may lead to contamination between formula (Grey mixing with Clear, for example). Functional resins should have their own designated tank due to chemical differences. Resins designated as biocompatible must maintain separate accessories, including a dedicated resin tank, build platform, and finishing equipment.
To dispose of resin or empty resin containers, follow the instructions described in section 13 of the resin's safety data sheet (SDS). Expose empty containers to light, then dispose of in accordance with governmental regulations.
Cleaned parts and cured (hardened) resin cannot be recycled, but can be discarded with household items as trash. Liquid resin (whether pure liquid, dissolved in alcohol, or partially cured) may be classified as hazardous waste and must be disposed of with care:
- Do not pour or dispose of liquid or partially cured resin in drains or with household waste.
- Place the liquid in a container and label and dispose of it according to your local regulatory guidelines.
- Cure pure resin (i.e., resin that is not dissolved in the alcohol from washing) in sunlight or under a UV lamp. Then dispose as normal waste. A simple trick is to put the liquid in a clear plastic bag and leave it in the sun until cured (1–10 days). Curing happens most effectively with exposure to UV light and heat.
Spills can damage your Formlabs printer or workspace so be careful to only fill your tank to the maximum line.