I’ve been trying to figure out what the actual best practice is for working with resin miniatures because I’ve seen so much conflicting advice online. For context, I mostly build resin miniatures from my local hobby store, along with some resin recasts I’ve bought online. Before doing any cleanup, I wash the parts in warm water with a little dish soap and gently scrub them with a toothbrush.
My concern is the cleanup stage. I have to cut off casting blocks, trim flash, and do a bit of sanding. Most of the sanding only lasts a few seconds here and there, but I’ll admit that sometimes I forget to put on a mask before making a few cuts or sanding something briefly.
This is where I’m confused because I’ve read completely different recommendations. Some people say a KN95 or N95 is perfectly adequate, while others insist you need a proper half-face respirator with P100 filters. Some say a few seconds of sanding isn’t worth worrying about, while others treat any amount of dry sanding as a serious hazard. I’ve also seen people recommend wet sanding everything, vacuuming the workspace immediately afterward with a HEPA vacuum, wiping down surfaces, and making sure no pets are ever in the room while you’re working.
So what is the current consensus? What mask should I actually be wearing when cutting and sanding resin miniatures? Is a KN95 enough, or should I invest in a respirator with P100 filters? Is a few seconds of dry sanding realistically a significant exposure, or is the risk mainly from repeated long-term hobby sessions? How important are practices like wet sanding, HEPA vacuuming, and keeping pets out of the room? If you’ve been building resin kits for years, what does your own workflow look like?
I’m not looking to cut corners—I just want to separate evidence-based safety practices from hobby myths. Thanks!