Re: [ATM] machine hogging

[Guy Brandenburg <gfbrandenburg@yahoo.com>]

The piece of metal I am using is a pulley. The bottom
is in the shape of a ring with a hollow center. The
diameter is about 4 or 5 inches. I will try it with
more weight, and I will also try a ceramic tool that
we have that is much, much heavier and see if that
helps. 
I noticed before that pushing the tool by hand on the
rotating wheel makes things go much, much faster! 

Sheesh!

Guy B

--- Woodchuck <djv@bedford.net> wrote:
> On Mon, 29 Mar 2004, Guy Brandenburg wrote:
> 
> > I didn't get any responses when I asked whether it
> was
> > normal for 3 hours of machine grinding/hogging
> with a
> > cast iron gear and #60 grit to produce at MOST a
> > 0.002" depression on a 16.5" plate glass mirror
> blank.
> > The gear weighs about 5 pounds, I guess.
> 
> You are using the gear as a tool?  If so, is the
> proper
> curve generated already on the tool, i.e. by a
> lathe?
> 
> If the tool is C.I. and flat, I'd expect the blank
> to stay that
> way, too.
> 
> Dave
> 
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=====
Guy  BrandenburgWashington, DChttp://home.earthlink.net/~gfbranden/GFB_Home_Page.html

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