Wendell, I'm not sure this would be a good idea. 1:3 from 1:3.8 is a 21% reduction in hardner this is WAY outside the normal area of ' acceptable variation' for epoxy's. I wouldn't do it if it was my butt in the seat!.

 

My 2 cents.

Jarrett

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

From: Wendell Voto <jwvoto@itlnet.net>

Date: Thursday, January 26, 2006 3:45 pm

Subject: [FlyRotary] Re: Epoxy

>
>  ----- Original Message -----
>  From: John Downing
>  To: Rotary motors in aircraft
>  Sent: Thursday, January 26, 2006 1:16 PM
>  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
>
>  Since you are using the volume method of measurement, you might
> try using the pumps that West Systems uses and are available in
> 3:1 ratio which should work fine for a 1:3.8. If you wanted to get
> closer, just hit the resin pump for a few more drops.
>  These pumps are cheap and I believe Wicks and ACS sells them. I
> use them all the time.
>  Wendell
>