The acetone allows the resin to go on very thin, much thinner than squeegeeing with something. As a result, the difference is a couple of ounces on a wide body fuse (I've done it both ways). But either way works fine, and west systems is the BEST resin out there. But it is pricey.

I used to use alcohol as well, but acetone works better. Alcohol works fine too, but doesn't quite go into solution with the epoxy as well. Plus acetone is actually marketed as epoxy thinner. At first I was afraid it might attack the glue joints, but it doesn't.

-Mike