Re: [CAD_CAM_EDM_DRO] Epoxy Granite

One Other thing the Spindle Bearings will cost a lot of money inorder to
hold that size Mirror and have no runout.

Harko

On 2/23/06, Jack Hudler <yahoo@...> wrote:
>
> Harko! Thanks this is exactly what I'm looking for. Now that I've got
> spec's I
> can design this monster and see how much resin I'll need.
>
>
>
> I'll be turning a 2 meter mirror with two radiuses of curvature on it plus
> the
> secondary and if that's successful I'll be able to make any mirror I want.
> Actually I'll be testing a whole bunch of glass before I mount up $80000
> in
> glass.
>
> I need to reach at least 5ìm(micrometer) precision; making it out of resin
> will
> allow better temperature control with child water piping. The final polish
> to
> 1ìm (ë/2) or better will be done using traditional diamond lap methods.
>
>
>
> The only thing I need to find is a cogless linear drive that has a
> repeatability
> of 0.1ìm or 0.05ìm.
>
>
>
> Heck, I could even make a profit! J/K. But even if I end up with lathe
> that
> won't turn glass to the required finish, imagine the surface finish on
> metals!
>
>
>
> Wish me luck! And thanks for the help!
>
> Jack Hudler
>
> _____
>
> From: Harko Schwartz [mailto:ncmeinc@...]
> Sent: Thursday, February 23, 2006 1:54 PM
> To: Yahoo@...
> Subject: Re: [CAD_CAM_EDM_DRO] Epoxy Granite
>
>
>
> Hi Jack
>
> www.philadelphiaresins.com
> 130 Commerce Drive, Montgomeryville, PA 18936 USA
> Telephone 215.855.8450 Fax 215.855.4688
>
> This is the best one that I know of. You can do things like get close
> then use
> linear ways and put a release agent on the bottom of them to make the
> accurate
> base. I worked on a George Fisher lathe and they even made the spindle
> housing
> out of Epoxy Cement. There are many benefits to making the machine that
> way.
> Vibration will be dampened and the finish on the parts will be
> great. Most
> hardinge lathes have a granite base. Any other questions
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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