Carbon Fiber/Composite (whatever) toxicity?

My wild guess is that thermoset may be safer. See if you can find out what resin or epoxy is used, then check out the msds for it. That's the biggest factor, unless a clearcoat was used. You may also want to check out the release agent, although a good wash and scrub should get rid of that.

Ok, well, it'll work for a prototype I guess.

The internal diameter of the carbon composite arrow I have on hand is perfect for my application though.

Thanks Eugene. Anybody else that can elaborate I'd appreciate it, finding out what these guys use sounds like it might be a chore, they might not even know themselves.

I know that carbon fiber is not safe to breathe, and use both a mask and goggles when cutting it, and shower and wash my clothing immediately afterward. Would not want to risk ingesting it either.

Breathing it is totally different. That's partially because when it's cut, fibers are thrown into the air that can cause issues when it goes into your lungs. It's not good to breathe any fibers that don't break down, including fiberglass or asbestos, and think, fiberglass is just inert glass.

Now when laying it up, the fumes may be noxious, but this goes away. I have a 3" diameter carbon fiber tube a few feet away from me. Made by the Air Force for space programs in a research lab, so you know it has some super top secret deadly little green alien poison, but I wouldn't hesitate to sniff or lick it. Okay, maybe I would hesitate, but that's only because I use it to massage my legs.