McLube for plate flange glassing

[Horace Greeley]

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