Re: [ATM] working with pitch

[Guy Brandenburg <gfbrandenburg@yahoo.com>]

Heat guns and hair driers work OK, but I like infrared
heat lamps a lot. They are quieter, also.
Guy

--- James Lerch <jlerch1@tampabay.rr.com> wrote:

> David,
> 
> I've used a paint stripping heat gun (on low) to do
> the same with no adverse 
> effects.  However, once I get the contact I'm
> looking for, I scrub all the 
> imbedded CeO off with a 4" stainless steel wire
> brush.  (the imbedded CeO will 
> form a kind of brown skin to the top of the heated
> pitch)
> 
> Same trick works well for conforming an old pitch
> lap to a new mirror.  I've 
> also brazed a piece of copper pipe to the 'paint
> stripping attachment' with the 
> end of the pipe pinched into a tight "V" shape to
> re-channel the lap as needed.
> 
> 
> ----- Original Message ----- 
> From: "David Williams" <dwilliams1128@earthlink.net>
> 
> 
> Hello ATM
> 
> When I was making my full pitch lap because I
> believe that my mirror has 
> hyperbola the pouring of the pitch got to be
> difficult.  It was stickier than 
> usual.  I've still got some of it in my fingure
> nails.  It didn't pour right so 
> the lap became uneven.  So then I got the idea that
> I could use a hair drier to 
> heat the lap while I use hand pressure to docture up
> the lap.  This idea has 
> worked so far.  Does anybody here know if this is an
> exceptable technique?
> 
> David
> _______________________________________________
> ATM mailing list http://www.atmlist.net/ 
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


=====
Guy  Brandenburg
Washington, DC
My home page:
http://home.earthlink.net/~gfbranden/GFB_Home_Page.html
_______________________________________________
ATM mailing list http://www.atmlist.net/