McLube for plate flange glassing

[Farrell]

What is boat resin?

Terry Farrell

----- Original Message ----- 
From: "Horace Greeley" <hgreeley@stanford.edu>
To: <davidlovepianos@earthlink.net>; "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, April 07, 2004 1:42 PM
Subject: Re: McLube for plate flange glassing


>
> Hi, David,
>
> At 07:24 AM 4/7/2004, you wrote:
>
> >Has anyone used McClube 444A for preparation of the plate flange prior to
> >glassing?  It is, afterall, a mold release formula.
>
> Yes - but it is for use with plastic/resin/metal molds, not cast iron.
>
> >   Does it provide
> >adequate release properties for epoxy?
>
> No.  The iron is too porous.  What did work, but was far too labor
> intensive, was to "butter" the plate with fairly thin boat resin.  The
> problem with that was working with resin that was sufficiently thin to
> penetrate the plate (at least somewhat) and yet sufficiently thick so as
> not to pool up too much.  Altogether too much trouble....so, I went back
to
> either wax or plasticized kraft paper. YMMV.
>
> Best.
>
> Horace
>
>
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