Re: ATM re: microfacetting pitch lap during final mirror steps

["Bill Kelley" <flex@commspeed.net>]

Hi-
Hey- I don't think he meant to leave the wire mesh on the lap.
Unless scraps of mesh were left behind, which doesn't seem likely.
Anyway stuff that gets buried in a lap that is denser than pitch
doesn't seem to work its way to the surface. Don't give up too
soon on the idea. I've used "hardware cloth" which is a metal mesh.
No scratches. Of course I took it off after pressing the pattern :>)
Bill


>
> Hello all....
>
> I have just been informed by Frank Ward that using wire lath to generate a
> facet pattern on a pitch lap would more than likely generate a pattern of
> scratches on the glass itself.
>
> It would seem obvious that sharp metal and smooth glass do not mix....what
a
> dummy I am. Well, I guess you can tell I am new at this. Had I attempt
this
> and generated  a nice diamond pattern of scratches on my nice smooth
mirror,
> I'd be cursing up a blue streak. Thanks, Frank, for pointing this glaring
> fact out to me.
>
> Dang....thought I had something there. It should have occurred to me why I
> hadn't seen or heard of anyone using metal to press a lap. Frank also
> mentioned that he would like very much to hear of my results once I
"tried"
> this method. I have more than a sneaking suspicion that more than a few of
> the ATM community would be hospitalized as a result of busting a gut from
> laughing so hard.
>
> Thanks again to all....
>
> Bob Mazzullo
>
>
>