[pianotech] Epoxy

[Terry Farrell]

Hi Joe,

I can't comment specifically on the epoxy you saw in the magazine because you don't have the manufacturer, however all the epoxies I have read about that are designed for use in cooler weather simply have the feature that they will harden at cooler temperatures - they will still harden faster at higher temperatures.

I doubt that the article said that the epoxy would cure faster in cold weather than warm - likely it simple pointed out that it WOULD cure in cool weather.

But if I am wrong (it happened once before in 1962), please provide specifics so that I can expand my knowledge.

Here's a link to System Three Cold Cure epoxy:  http://www.systemthree.com/reslibrary/tds/Cold-Cure_TDS.pdf  It states that it will cure down to 35 degrees F - doesn't say anything about curing slower at higher temps.

Thanks.

Terry Farrell

On Nov 5, 2012, at 12:48 PM, Joseph Garrett wrote:

> 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