Handling SprintRay Resin
Resin is non-toxic in both liquid and solid form. But it is classified as a sensitizer, which means that exposure over time can cause your body to have a mild allergic reaction. Here's how to handle resin safely.
Always wear gloves
Always wear gloves when handling uncured resin. Whether you're pouring, removing models from the platform, or even after models have been washed, gloves must be worn in order to limit exposure.
3D printing resins contain chemicals of different weights, therefore it is essential to thoroughly mix resin before every print. For resin already in the tank, use provided resin wiper to gently stir the material. If pouring from a bottle, shake the bottle vigorously for several minutes before dispensing.
When pouring resin from your tank or other vessel back into the bottle, always pour through a fine mesh filter. This will trap partially-cured debris and prevent contamination of the rest of your bottle, prolonging the life of your materials.
Watch expiration dates
Resin has a shelf life; it's important to keep an eye on the expiration date. Use of expired resin will likely result in failed prints, as the compounds required for curing break down and will not activate properly. The expiration date for SprintRay resins is printed on the back of the bottle.
Dispose of properly
Liquid resin should be cured before being disposed of. Pour liquid resin into a clear container and set it in direct sunlight. Once it has cured, it can be treated as waste and disposed of in the regular trash.
Washing SprintRay Castable 2 Resin
After your parts have printed successfully, they must be removed from the platform and washed before being post-cured. This step is essential to producing accurate, strong parts.
Note: Castable 2 resin contains abrasive fillers. When your print is completed, wipe off excess resin from the build platform with a paper towel and discard. Do not squeegee excess resin from the build platform back into the resin tank.
Isopropyl Alcohol (IPA)
We recommend washing your parts in IPA with a concentration of 96% or higher. Make sure that your wash station is in a well-ventilated area in order to avoid unintentional inhalation and dizziness. When using IPA, always wear gloves.
Remember: IPA is extremely flammable! Keep it away from heat sources, sparks, and flames.
Rinsing Printed Parts
Castable 2 is sensitive to IPA, so it's important never to leave printed parts in IPA for more than a few seconds at a time. After your print is complete, remove the model from the build platform but do not soak in an IPA bath. Use a squirt bottle to rinse the part with IPA or swirl the part around in an alcohol bath for a couple of seconds.
Dab off excess resin with a paper towel. Use forced air to dry your parts rapidly. For best results, ensure that all the resin in the crack and crannies of the parts are sufficiently dry. Repeat the rinse and drying step until your part is clean.
Post Curing SprintRay Castable 2 Resin
Using Pro Cure
Once your washed parts have been fully dried, they need to be properly post-cured to maximize strength and to comply with FDA standards. When using SprintRay Pro Cure, simply find the correct material on the touchscreen and begin the curing process. Pro Cure is preprogrammed with the correct temperature and time profiles for most popular resins.
Using 3rd-Party Curing Unit
If using a cure box other than SprintRay Pro Cure, set your curing unit to 30-degrees Celsius and leave parts in for 15 minutes depending on the light power of your curing box.