Date:         Mon, 4 Feb 2002 20:55:22 -0600
Reply-To:     Stan Wilder <wilden1@JUNO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Stan Wilder <wilden1@JUNO.COM>
Subject:      Re: OT: Window Glass
Comments: To: kitzmann@EXIS.NET
Content-Type: text/plain; charset=us-ascii

I've been watching the responses to this post.
My dog scratched the glass on my patio sliding door  .......... he had
dirt on his paws the dirt / grit is abrasive. Given enough encounters the
grit scratches the glass. One or twenty times not likely but over a
period of time the grit leaves some marking.

Stan Wilder


On Mon, 4 Feb 2002 21:18:33 -0500 Kitzmann <kitzmann@EXIS.NET> writes:
> If any of you remember Earth Science in H.S. and Mohs hardness scale,
> glass
> falls at about 5.5 and finger nails(including dogs claws) comes in
> about 3.
>  In other words the dogs nails would be scratched by the glass and
> not the
> other way around.  The stuff should come off without much trouble.
> The
> only other thing that could have happened is the dogs may have
> tracked some
> sand, ie quartz grains, onto the windshield.  This would easily
> scratch the
> glass and in that case what do you do?
>
> Dave K.
> Certified rock nerd, uh I mean geologist
>
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