Return-Path: Received: from hil-img-4.compuserve.com ([149.174.177.134]) by truman.olsusa.com (Post.Office MTA v3.1.2 release (PO203-101c) ID# 0-44819U2500L250S0) with ESMTP id AAA15866 for ; Thu, 10 Dec 1998 20:50:27 -0500 Received: (from root@localhost) by hil-img-4.compuserve.com (8.8.6/8.8.6/2.17) id UAA16111 for lancair.list@olsusa.com; Thu, 10 Dec 1998 20:50:55 -0500 (EST) Date: Thu, 10 Dec 1998 20:48:25 -0500 From: Marvin Kaye <74740.231@compuserve.com> Subject: Re: Jeffco and Ratio tolerances Sender: Marvin Kaye <74740.231@compuserve.com> To: Lancair Mail List Message-ID: <199812102050_MC2-633A-693A@compuserve.com> X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Posted for "DON & PAT RYAN" The WEIGHT Ratio is very important to hold as closely as possible. I believe the wt. ratio given is 10 g of Epoxy to 2.5 to 2.6 grams of Hardener. These materials react molecule to molecule and any mismatch will result in some loss of strength. The loss is least on the side of excessive hardner. I haven't measure cured properties on this particular resin system, but on a similar one I believe the deteriation in strength was very noticable outside a +5%-3% of hardener.