RE: ATM Pitch Laps

["Russell Jocoy" <russjocoy@hotmail.com>]

>From: "Keith Taylor" <keith.h.taylor@worldnet.att.net>
>Reply-To: "Keith Taylor" <keith.h.taylor@worldnet.att.net>
>To: <atm@shore.net>
>Subject: ATM Pitch Laps
>Date: Fri, 9 Jan 2004 15:57:28 -0500
>
>
>Hello ATM List,
>I am about to go pour a pitch lap, using Kevin McCarthy's lap mold, and
>burgundy pitch.
>In all of my reading (remember I am an absolute neophyte in this hobby)
>I read about all sorts of magic ingredients to add to the pitch mix, but
>have never seen mention of adding the Cerium Oxide itself to the mix.
>Wouldn't that insure that all parts of the lap in contact with glass
>would have polishing compound available? Naturally additional water and
>Cerium Oxide would be needed, but as a "start" I'd think adding some to
>the witch's brew wouldn't hurt anything, would it? I won't try it until
>I hear back from experienced list members, it just seemed like a good
>idea to me at the time!
>Keith Taylor   (in freezing cold Maine!)
>
>("atm@shore.net")

   Keith,   There is no need to add CEO to your pitch. Once you start 
polishing the CEO will lock
itself into the surface of the pitch and sink deep into the laps surface.  
Then you add more CEO
and polish, and then it sinks into the pitch. After a few hours of polishing 
your pitch will have plenty
of CEO in it.    Later when you melt this pitch down to make another lap ( 
and you will) the CEO is
still in the pitch.  Your next lap will have this CEO inside so you will 
have to add more for the surface
of the lap.  Many people use new pitch and feel it is necessary to start 
clean...., only to add the same
CEO (but new) to the new pitch.......Why???      I spoke with a friend who 
helps with mirror grinding
classes and as the students redo their pitch laps and break off the "old" 
pitch into plastic bags ready
to throw into the garbage,... he salvages the mess and melts it down to use 
again. He has so much
pitch he says he will never need to buy anymore...    Your pitch is a 
"Tool", unless it gets some real
bad  contamination, it can be used over and over... Russ Jocoy
("atm@shore.net")
>

_________________________________________________________________
Let the new MSN Premium Internet Software make the most of your high-speed 
experience. http://join.msn.com/?pgmarket=en-us&page=byoa/prem&ST=1