Re: [ATM] Grinding with the remain's of a grinding wheel

[vorblesnak@peak.org]

> Date: Thu, 07 Jun 2007 21:19:23 -0400
> From: "Russell Jocoy" <russjocoy@hotmail.com>
> Subject: [ATM] Grinding with the remain's of a grinding wheel
> To: atm@atmlist.net
> Message-ID: <BAY138-F7E67E26EB6DA81CC95202B8250@phx.gbl>
> Content-Type: text/plain; format=flowed
>
> David Davis, You always amaze me with your off the wall procedures. You
> are saying that you ground up a solid grinding wheel for grit???  How

Well smashed it up with a hammer and then crushed it up.

> about gathering up some gravel from your driveway and crushing it with a
> hammer..
> (I know ,no Carbo) but maybe the same end??

It doesn't work.  Yeah, I tried it and creek sand and white silica sand
that they use in wall coverings.  I tried the stuff you sweep up from a
metal shop floor, (grit and metal filings).  I read a fascinating bit
about elutriation on this list and tried that.  I have tried the shattered
remains of tempered glass, (should be harder, it really isn't).

When I am hogging I am moving glass, that's it.  Just chipping it out of
the disk in a rather violent but controlled manner.  I am using #60 grit
right now.  Once I get the sagitta and get it worked out towards the edge
I will start using 120 and smooth it all out.

>     Grind on David, wherever it take you on your experimental journey,
> just let us know where you are..... RUSS JOCOY
>

Glad I could give you a shock.  It makes it worth the writing knowing I
made someone think.

http://en.wikibooks.org/wiki/Telescope_Making

David Davis
Toledo, OR 97391




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