On 2008-01-17, Joe AutoDrill wrote:
Some metal content on the following site:

http://encyclopedia.thefreedictionar...neral+hardness

I was surprised to see hardened steel is rated as being harder than glass.
I presume this is hardened steel that has almost no structural use
whatsoever due to being so brittle.

Hmm ... did you ever take a chemistry lab course in either high
school or college?

Do you remember how you cut glass tubing to length?

For that matter -- how about the wheel type glass cutters sold
in the hardware store?

Enjoy,
DoN.

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