Cheap vases - are they safe to fire?

[FusedLightStudio]

I bought some colored vases and bottles at Dollar Tree thinking that I could use them for color accents on my float glass creations. But when I broke them up, I saw that the thick bottoms are clear glass; only the thin sides have color.

I'm concerned that the colors are some superficial coating (like lead-based paint?!) that will give off toxic fumes when fired.

Anyone have knowledge or experience about this?

[Marty]

I'd be more concerned with incompatibility.

[Brad Walker]

Most likely the color will just go away in the firing. I've fired bottles that are similar and they just emerge from the kiln all clear.

I wouldn't worry about toxic fumes. And Marty's right -- the vase is probably not compatible with your normal float glass.

[FusedLightStudio]

Thanks very much, Marty and Brad. I’ll continue my experimentation with these limitations in mind!