I soak in acetone to remove residue from prior fletchings. Then I wipe it clean with a paper towel. If it squeaks, I know it's clean enough. (If they're new, I skip the acetone.) Then I dip the end in Bohning clear fletching laquer. I let it dry, and then glue my nocks and feathers on with fletch-tite. Afterwards, I place a dab of glue on the front end of each feather. I have not lost a feather on a single arrow for over 5 years. They get scraped up, dirty, wet, and ragged, but they don't fall off.