[NSRCA-discussion] Fw: Epoxy Question

[Ken Thompson]

----- Original Message ----- 
From: Ken Thompson 
To: NSRCA Mailing List 
Sent: Tuesday, November 20, 2007 10:13 AM
Subject: Re: [NSRCA-discussion] Epoxy Question


Well folks,

Here is a preliminary finding...Considering the fact that I probably skewed the results by stirring the mixture to keep it incorporated, and the 5 minute epoxy mixture I used has only been curing for about 60 minutes, I found no detectable loss of weight on a Pelouze PS20DL digital postal scale.  I will try to attach a pic of the weight of the cup, stir stick and mixture.  
The cup and stick weigh .5 oz, with the remainder being the mixture.  One thing you will see is that stirring the mixture makes a gelatinous mess...

----- Original Message ----- 
  From: wgalligan 
  To: Don Ramsey ; NSRCA Mailing List 
  Sent: Tuesday, November 20, 2007 8:51 AM
  Subject: Re: [NSRCA-discussion] Epoxy Question


  OK,  I'll take a stab.  After the alcohol evaporates you would have the same mass or weight of epoxy that you started with.  AND to reiterate what I learned from the Master Fowler, thinning epoxy, if I remember right, changes the molecular structure weakening the mixture.  It will also cause the epoxy to shrink over time. BTDT.

  Wayne Galligan

  waiting for Master to speak
    ----- Original Message ----- 
    From: Don Ramsey 
    To: NSRCA Mailing List 
    Sent: Tuesday, November 20, 2007 8:53 AM
    Subject: [NSRCA-discussion] Epoxy Question


    Breaking news.  Here's something from Mike Harrison that will be of interest to the list.
    Don


    Ok, think about this, take 1 oz epoxy and thin with 1 oz alcohol (91%).?  After curing how much do you think it weighs and tell me why.

    Mike


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