Re: ATM pitch lap woes--help appreciated

["Rodney Mayes" <r.gm@muhlon.com>]

Thanks everybody.  I decided this morning to go ahead and channel the lap
and give it a try.  Channels came out very nicely using a razor blade with
water/dish soap as lubricant.  Did a warm press after soaking mirror and
tool in very warm water for about 5-10 minutes and away I went.  Lap seems
to be in good contact and working very well.  We'll see how it goes.  On to
the next lesson I guess.  RM


----- Original Message ----- 
From: "Bob May" <bobmay@nethere.com>
To: "atmlist" <atm@shore.net>
Sent: Sunday, January 04, 2004 3:59 PM
Subject: Re: ATM pitch lap woes--help appreciated


>
> Sounds like your second lap is perfect!  Don't worry about small areas
that
> aren't in contact as it is the general amount of surface, not particular
> little points that matter.  As the lap works, those few little areas that
> aren't in contact right now will gradually work in and you will get all of
> the lap in contact.  Start working on it now and you will be way ahead.
> Even if there are some areas where there is no contact, you don't have to
> worry as the lap will do a perfect job of polishing and figuring the glass
> surface.
> It actually ends up being things that you can't see that cause the most
> problems with laps - hard spots and so forth are what really cause
problems
> with laps.
> FWIW, people spend way too much time trying to get that perfect lap with
all
> kinds of complex rituals and never really get to doing what the lap is
> supposed to do which is polish some glass.
> Bob May
> http://nav.to/bobmay
> bobmay@nethere.com
> NEW! http://bobmay.astronomy.net
>
>