I use West Systems 105 epoxy with 206 hardener.
The 206 is the slower gardener correct?
If you look at the blade in the right light you will still see a small film that Acetone leaves behind. If it is working for you by all means still use it. What works for me might not work for you.I'm sure alcohol works well since I've used it with success. If you use acetone you wait until it evaporates before applying epoxy per the directions.