Well let me say that when I started out in this RC thing 22 years ago, I was taken advantaged by a local hobby shop owner. I asked about using epoxy I bought at Walmart and I was told NOT to use them. He said that his in store epoxy are specifically designed for RC planes and my planes will crash if I don't use the "right epoxy". I ended up buying over 10 bucks worth of epoxy that is no different than commercial ones. DP