X-OldHeader: From edscott@best.com-DeleteThis.com Wed May 9 11:27:17 2001 Return-Path: <edscott@best.com-DeleteThis.com> Received: from opus.labs.agilent.com (root@opus.labs.agilent.com-DeleteThis.com [130.29.244.179]) by jr.labs.agilent.com (8.9.3 (PHNE_18979)/8.9.3 AgilentLabs Workstation) with ESMTP id LAA25553 for <wind_talk_ls@jr.labs.agilent.com-DeleteThis.com>; Wed, 9 May 2001 11:27:17 -0700 (PDT) Received: from msgbas2.sgp.agilent.com (msgbas2.sgp.agilent.com [141.183.101.231]) by opus.labs.agilent.com (8.9.3 (PHNE_18979)/8.9.3 AgilentLabs Workstation) with ESMTP id LAA22210 for <wind_talk@opus.labs.agilent.com-DeleteThis.com>; Wed, 9 May 2001 11:27:16 -0700 (PDT) Received: from mail-out2.apple.com (mail-out2.apple.com [17.254.0.51]) by msgbas2.sgp.agilent.com (Postfix) with ESMTP id 656B8C51 for <wind_talk@opus.labs.agilent.com-DeleteThis.com>; Thu, 10 May 2001 02:27:11 +0800 (SGP) Received: from apple.com (A17-129-100-225.apple.com [17.129.100.225]) by mail-out2.apple.com (8.9.3/8.9.3) with ESMTP id LAA26216 for <wind_talk@opus.labs.agilent.com-DeleteThis.com>; Wed, 9 May 2001 11:27:11 -0700 (PDT) Received: from scv2.apple.com (scv2.apple.com) by apple.com (Content Technologies SMTPRS 4.2.1) with ESMTP id <T5369b317e1118164e13e8@apple.com-DeleteThis.com> for <wind_talk@opus.labs.agilent.com-DeleteThis.com>; Wed, 9 May 2001 11:27:10 -0700 Received: from [17.193.12.114] (scoted.apple.com [17.193.12.114]) by scv2.apple.com (8.9.3/8.9.3) with ESMTP id LAA19389 for <wind_talk@opus.labs.agilent.com-DeleteThis.com>; Wed, 9 May 2001 11:27:09 -0700 (PDT) User-Agent: Microsoft Outlook Express Macintosh Edition - 5.01 (1630) Date: Wed, 09 May 2001 11:27:23 -0700 Subject: Re: Hard, Fast or Slow? Fast, usually From: Ed Scott <edscott@best.com-DeleteThis.com> To: <wind_talk@opus.labs.agilent.com-DeleteThis.com> Message-ID: <B71EDA1A.44E0%edscott@best.com-DeleteThis.com> In-Reply-To: <3AF98387.F79B465C@mechsys2.me.berkeley.edu-DeleteThis.com>
on 5/9/01 11:00 AM, J.R. Seven at seven@mechsys2.me.berkeley.edu-DeleteThis.com wrote:
> Everything I've read says that varying the ratio of hardener to epoxy is a bad
> idea. This works for polyester because polyester hardener catalyzes a
> reaction
> in the polyester resin itself, and more catalyst makes the resin change more
> quickly.
I assumed that the difference between the slow and fast hardeners is the
amount of the active hardening ingredient in each (more in the fast). So,
if you pump out more slow stuff, you get more of the active ingredient to
decrease set-up time.
Of course, everyone knows what they say when you "assume" something.
-Ed
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