There isn't any resin that is safe. As noted by someone else there are some resins, such as plant-based resins, that contain fewer irritating chemicals that you could say are "safer", but in the end all resins should be treated as hazardous. Having adequate PPE is essential for any resin. Extra steps can be taken beyond PPE to help in various ways.

There is no truly 100% safe uncured 3D printed resin – the best alternative would be a dental resin. These cost several times regular ones yet can still provide harm for you and pets. For the price, you’re better off getting that fan, casing, buckets, duct, etc.
Resin 3D Printing: the Absolute Beginners Guide!Are you just getting started with Resin 3D Printing and need help getting things set up? If so you've come to
by Melanie Griffin Updated Mar 5, 2023. 3D printer resin can affect you and the environment. Learn if 3D printer resin is toxic and how to keep yourself and the planet safe. Advertisement.

If it's not safe for you it's not safe for him. That much should be obvious. AdonaelWintersmith. • 2 yr. ago. People are animals so if it isn't safe for us (it isn't) then it isn't for pets. The printer needs to be properly enclosed and/or directly ventilated via tubing to the outside. r/resinprinting.

Resin fumes may or may not be so lethal for birds (AFAIK nobody tested this for certain; at least, I hope nobody tested it), but they probably won't do much good. Many/most SLA printing resins contain highly carcinogenic substances, like formaldehyde. Friends don't let friends kill their birds, or give them cancer. 1. DaL7j.
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