[pianotech] Epoxy

[Joseph Garrett]

Mike, 
I read an article in a Sailing magazine that said there were a few epoxies
that were designed for colder temps, in making emergency repairs to a boat.
Since it's been a while and I didn't consider it pertinent to what we do, I
cannot recall the specific brand or group of epoxies it was. Suffice it to
say, the article did state that some would set faster in cold. At the time
I thought that was interesting, since I was always under the impression
that the heat generated by the chemical processes of epoxies, was the
determining factor. I wish I could be more specific in that regard.
Best,
Joe


> [Original Message]
> From: Mike Spalding <mike.spalding1 at frontier.com>
> To: <joegarrett at earthlink.net>; <pianotech at ptg.org>
> Date: 11/5/2012 9:11:26 AM
> Subject: Re: [pianotech] Epoxy
>
> Joe,
> For our edification, can you name one epoxy that cures faster cold than 
> hot?  This  cut-n-paste from the West Systems "how to use" page 
> summarizes the behavior of every epoxy I've ever used:
>
>
>
> */Figure 1---/All resin/hardener combinations go through the
> same phases of cure. All combinations cure faster at warmer
> temperatures and cure slower at cooler temperatures.
> *
> cheers,
>
> Mike
>
> On 11/5/2012 10:55 AM, Joseph Garrett wrote:
> > Dean May said:
> > "Joe's trick of using the heat is sure to improve epoxy's flow
performance.
> > But heat will also speed the cure time for epoxy."
> >
> > Dean,
> > Do you always fly by the seat of your pants? That is not a true
statement!
> > With SOME epoxies, heat will cause them to set up faster, ...NOT all of
> > them. There are those that will set up faster in a colder environ.
Please
> > do your research before going off the deep end.??? With the slow cure
> > epoxies, that I am suggesting, heat will have no set up affect on them,
it
> > just makes them thinner!
> > Joe
> >
> >
> > Joe Garrett, R.P.T.
> > Captain of the Tool Police
> > Squares R I
> >
> >
>