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Mixing Different Epoxy

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Posted 13 January 2010 - 08:44 PM

I recently found some epoxy I bought a while back I believe it was to be used for dipping jigs the consistantcy is close to water I was wondering if I can mix this with a thicker epoxy like devcon to thin the devcon? If I do try it how should I mix it ?
I was thinking of mixing the two resins together until I get the consistency I would then mix the two hardeners together and then mix the mixes like normal epoxy and brush on like normal.
The thinner epoxy works good by itself but needs alot of coats to get a rich finish it also takes a long time to setup so I am hoping it will extend the working time of devcon wich is to fast for me. I kept a batch of mixed stuff in the freezer for two days and still used it .
I also found a good use for the thinner stuff is to fix imperfections like sand paper marks and air holes in devcon.

#2 BobP


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Posted 14 January 2010 - 12:25 AM

It's awfully easy to thin Devcon with a few drops of lacquer thinner or denatured alcohol. I think someone on the board said they mixed Devcon and Etex and it worked fine. Will your stuff? Maybe... maybe even probably. Only one way to find out. I'd mix the epoxies separately with their hardeners and then combine them.

#3 rofish


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Posted 14 January 2010 - 02:19 AM

I also use a thinner to thin the epoxy. The thinner contains acetone, toluene and something else I don't remember. My foiled crankbaits look better if I use thinned epoxy. After the first coat, I need to sand the epoxy, to smooth out the surface, then I apply a second coat of thinned epoxy, which will smooth out any irregularity of the surface.
But the main benefit of thinning Devcon 2 ton is that your working time with the stuff is tripled or so. I also use an ancient hair dryer which is not very good for hair drying but is perfect for epoxy. It blows out little air compared to modern hairdryers, but the air is hotter. Thinned epoxy and the hairdryer means for me no air bubbles at all in the epoxy.
So indeed, you do not really need to mix epoxies to thin them, but I think it is doable.
I also remember that someone on the board has mixed Devcon and Etex (a guy in Holland, I guess), and he claimed very good results.
Since the specialists in epoxy do not tell you what is the best way to mix epoxies, (your intention to do it or BobP's suggestion) I think you have to try them both.

#4 JLester



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Posted 14 January 2010 - 02:32 AM

I've used 70% rubbing alcohole to thin D2T with know probloms at all. Cheap also.