Glassing pinblocks

[David Love]

I guess we're talking about epoxy resin versus polyester resin--all epoxies
are resins but not all resins are epoxies?  I don't really know what
qualifies something as a resin, per se.  In answer to Greg's question, one
can develop sensitivities to epoxy and I use epoxy a lot so any opportunity
to limit my exposure.  Also, I have a hard time controlling the airborn
tendency for colloidal silica which I use to thicken epoxy--not nice stuff
to breath.  Of course, I could just spend a lot more time getting a perfect
fit without glassing...but my golf game might suffer.  

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: Phillip Ford <fordpiano@earthlink.net>
> To: <pianotech@ptg.org>
> Date: 6/29/2004 2:07:10 PM
> Subject: Re: Glassing pinblocks
>
> >I prefer to limit my exposure to epoxy and it's thickening agents and I'd
> >like to find something with a variable cure rate that can be controlled
by
> >the amount of catalyst.  Epoxy is sensitive to proportions, resins are
not,
> >they simply cure more slowly if less is added.  Actually the stuff Jon
Page
> >uses (Marine Tex) is a resin, not an epoxy as I mentioned earlier, and
> >would be fine except I would like something not quite so thick.  I prefer
> >not to have to squeeze out the excess with a lot of clamp pressure.  I
have
> >used it before and it works well, though, I may just go back to it.
> >Something with slightly less viscosity that is a similar product would be
> >better for me.
> >
> >David Love
> >davidlovepianos@earthlink.net
>
> I thought epoxy was a resin.  Your local TAP Plastics (there's one on
South Van Ness in SF)
> has various other resins used in fiberglass.  Perhaps one of those will
meet your needs:
>
>
http://www.tapplastics.com/shop/category.php?bid=3&PHPSESSID=200406291459088
08721551
>
> I can't speak from experience, as I've only used epoxy for this
application.  Please let us
> know how it works out.
>
> Phil Ford
>
>
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