Re: [CAD_CAM_EDM_DRO] Re: Machineable wax problem

"Non Toxic" in the case of acrylic would only mean that the ultimate products of combustion are water and CO2. Burn out is not
totally a combustion process. First the material melts and breaks down some of it gets burned the rest boils out into the
atmosphere as organic volatiles. Residual carbon from the breakdown burns out to CO2 at the upper temperatures as enough oxygen
gets in to burn it. A well ventilated area is a good idea toxic or not.
Jesse




Jerry Kimberlin wrote:

> jvicars@... wrote:
> >
> > Odor has nothing to do with toxicity. If you guys are trying out new
> > materials for burning out then spend a few minutes and pick up the
> > MSDS. You guys mentioned Delrin. Delrin releases formaldyhyde when
> > burned.
>
> MSDS doesn't mean a thing since they are written by the maker of
> the product. I have contributed to MSDS work and know that the
> stuff in there about toxicity can be misleading to casual readers
> who don't know much about the jargon.
>
> No, odor doesn't necessarily indicate toxicity, but to say that
> it has nothing to do with it is a bit cavalier. Out of the
> Formaldyhyde is toxic. Don't breathe its vapors. Most burning
> plastics are toxic. We had a local fire at a plastics recycler
> some weeks ago that send a couple thousand people to the
> hospital. Some of the people were actually genuine, others went
> to establish a precident for a law suit.
>
> JerryK
>
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