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Jim Lowe
05-24-2002, 05:22 PM
This morning I was laminating with thickened epoxy and when I was done I had some left over and needed to fill the counter sunk screw heads that I used to edge fasten. However the epoxy mix I was using was thickened to a peanut butter consistency and I needed more of a pancake batter mix to fill the holes. Since this wasn’t a strength critical application I decided to try adding some acetone to the epoxy to try and thin it out (what’s the harm with a little chemistry experiment?). Well it worked, increased the pot life of the batch as well. I’m wondering though how the curing and strength characteristics will be effected. I don’t know of any literature on this but it does seem to be a useful trick in the right application.

Todd Bradshaw
05-24-2002, 06:01 PM
The Gougeon Brothers claim that evaporating thinners added to epoxy compromise it's ability to be seal against moisture intrusion, though I have no clue how much.

[ 05-24-2002, 07:02 PM: Message edited by: Todd Bradshaw ]

paladin
05-24-2002, 07:23 PM
acetone ain't a thinner....it's a cutting agent....I would seal whatever work that you have done...and seal it well...and I hope that it's non structural......