Fumes. SLA/DLP printer resins contain skin irritants inside the solvent, and those create rather noxious fumes. As described in Best way to deal with Resin Printers in your living space that can become a health hazard, and can result in pulmonary irritation. Those irritants are molecule sized organic compounds, and even the best filters require Is 3D printing safe? 3D printing can be relatively safe. However, there are a variety of different safety risks involved. These safety risks vary depending on the type of 3D printer (filament versus resin) and range from burn risks, electrical shock injury, and risk of coming in contact with toxic materials. Don’t let that scare you away though! The vast majority of printing resin is touch safe, but not safe for continuous skin contact. You can put a layer of sealant over it that is safe to touch though and then you are good to go. Go with something food safe, shellac is one that is commonly used to seal wood that will be eaten off of as an example. Resin is generally not safe for aquariums. If a resin 3D printed part doesn’t cure thoroughly, it can release toxins that are harmful to the fish. In its uncured form, 3D printer resin is notoriously toxic to aquatic ecosystems. The compounds in liquid resin can cause adverse health effects and deaths in fish. Subsequent investigation revealed that Tinuvin 292, used as a light stablizer in Dental LT, had leached out from the prints into the biomaterials, causing the toxicity. The paper said: “Severe reproductive toxicity induced by in vitro exposure to these 3D-printed resins highlights potential risks of deploying insufficiently characterized iOGL.