Humpback flints, a quick haircut

[jimairwin]

But ... for SAFETY (seriously!) ... think asbestos and mesothelioma ... ideally wear a NIOSH-rated mask or at least work with the flints downwind whilst in a strong breeze - outdoors of course.

I do similar, but use diamond wheels in a Dremel tool, as I can fix them in but seconds!

Why the ref to asbestos? Flint is silicon dioxide. Like glass chemically.

 

[wiscoaster]

Why the ref to asbestos? Flint is silicon dioxide. Like glass chemically.

You don't want to be breathing in sharp glass particles, do you?