When working with the 5-min epoxy, I like to mix it on Post-It Notes. They are the perfect size for most applications you can get to in 5 minutes and they are cheap and disposable. By leaving the note in place until you are done, you can see exactly where the epoxy is in it's curing time. This way, you'll know exactly when it is safe to unclamp and move on.

I mix and apply it with a 4" long stainless steel needle about an 1/8" in diameter. I made one up with a wooden handle on it and you can get great control over the stuff and get it just where you want it. You could use a thin knitting needle as a substitute.

I learned the Post-It and needle (actually called a bodkin) tricks from my other obsession, salt-water fly fishing. A few very productive flies call for sculpted bodies made from 5-min epoxy. You get very good at working with the stuff and keeping it balanced to form a perfect fish shape.

Hope this helps!

Ed