Have fun building!

Thanks. I have a few more weeks of teaching and hopefully I can knock through the rest of the editing before getting caught up in other projects.

I find a roller can pump some air into the layup, but with care that can be avoided.

I have taken a pencil and scribbled all over the surface prior to sanding. When the scribbles are gone, you are pretty sure you've sanded everything. It depends on how into it I am whether I bother or not.

Epoxy does not contain any solvents, so it doesn't put out much in the way of fumes. But, it is a reactive petrochemical mixture that does release some vapor, detectable as odor. Some people develop an allergic sensitivity to it. I work with the stuff for a living. It would be a big hassle to have to stop using it. While you may be able to safely use it without a lot of protective gear, it is cheap and easy to take some basic precautions. Probably more important than a respirator is gloves. Always wear gloves when you handle uncured epoxy. Try to keep it off your skin. If you get it on your skin DO NOT USE SOLVENTS to clean it off. Use soap and water, white vinegar, or wipe off most with a towel, let it dry then peel it off. Solvents will accelerate penetration into your skin. When I'm slapping a lot of resin around I wear the Tyvek suit to keep it off my clothes and more importantly off of me.

I can imagine when working with epoxy on a daily basis taking precautions to protect your respiratory tracks would seem advisable. I worked with epoxy and glass before and I always found that the glass was much more irritating than the epoxy mainly when sanding the the glass, glass particles seem to get everywhere.

When sanding glass with freshly cured epoxy, the epoxy is probably still a bigger threat than the glass. Breathing epoxy dust when it is not fully cured is seriously bad for you. Dust respirator is must.

Good to know, I'll keep that in mind, last time I glassed something was over a decade ago. I can't remember that I was wearing protection.