X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from misav01.sasknet.sk.ca ([142.165.20.162] verified) by logan.com (CommuniGate Pro SMTP 5.0.7f) with ESMTP id 954938 for flyrotary@lancaironline.net; Thu, 26 Jan 2006 15:34:50 -0500 Received-SPF: none receiver=logan.com; client-ip=142.165.20.162; envelope-from=hjjohnson@sasktel.net Received: from bgmpomr1.sasknet.sk.ca ([142.165.72.22]) by misav01 with InterScan Messaging Security Suite; Thu, 26 Jan 2006 14:34:04 -0600 Received: from sasktel.net ([192.168.234.97]) by bgmpomr1.sasknet.sk.ca (SaskTel eMessaging Service) with ESMTP id <0ITP007G3VSSX3Q0@bgmpomr1.sasknet.sk.ca> for flyrotary@lancaironline.net; Thu, 26 Jan 2006 14:34:04 -0600 (CST) Received: from [192.168.234.24] (Forwarded-For: [24.72.101.251]) by cgmail1.sasknet.sk.ca (mshttpd); Thu, 26 Jan 2006 14:42:00 -0600 Date: Thu, 26 Jan 2006 14:42:00 -0600 From: Heidi Johnson Subject: Re: [FlyRotary] Re: Epoxy To: Rotary motors in aircraft Message-id: MIME-version: 1.0 X-Mailer: Sun Java(tm) System Messenger Express 6.1 HotFix 0.11 (built Jan 28 2005) Content-type: text/html; charset=us-ascii Content-language: en Content-transfer-encoding: 7BIT Content-disposition: inline X-Accept-Language: en Priority: normal

Good post, just wanted to add.. As Marks stated, if you scribe the left over epoxy [ assuming your like the rest of us and made to much.. and have some left in a cup] you should get a nice white line w/ some hardened epoxy powderish stuff, coming off on the tool you use to scribe. Kinda hard to explain but.. if it doesn't give you a white line its not curing in the cup either [ usually there is enough heat to cure in the cup even in cooler area's.] Its not a garrentee but it's a place to start. Also as other's have said you may need to de-crystalize your hardner or it may be out of date.

Jarrett

----- Original Message -----

From: Mark R Steitle <mark.steitle@austin.utexas.edu>

Date: Thursday, January 26, 2006 1:45 pm

Subject: [FlyRotary] Re: Epoxy

> John,
>
> Are you measuring the mix ratio by weight or volume? From your
> post, it
> sounds like you're going by volume. That could be the problem. Also,
> what's the age of the hardener? Is it still within the mfg's
> shelf-life
> period? Did the remainder of the mix left in the cup cure, or is it
> still soft? Its always a good practice to keep the residue and
> check it
> with a sharp object the following day, just to make sure it hardened
> properly. Have you spoken with the manufacturer?
>
>
>
> Mark S.
>
>
>
> ________________________________
>
> From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> Behalf Of John Downing
> Sent: Thursday, January 26, 2006 1:16 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Epoxy
>
>
>
> Question for you glass fellows. Yesterday I laid up some cloth on the
> cowl and it didn't harden. I put some heat on it with the heat
> lamp and
> left it over night and nothing. This morning I put the heat lamp
> on it
> and pulled it off, scraped it and ground the area, wiped it down again
> with acetone and tried again. The epoxy is United Resin Corp. Uni-
> Lam.The shop is hot water heated with pipe in the floor and this
> epoxy is
> supposed to work at room temperature..The ratio by volume is 1 to 3.8,
> it has been working ok by using a marked stick in a soup can, but I'm
> wondering if this ratio is hyper critical. Any input would be greatly
> appreciated. JohnD
>
>