For cleaner refret jobs!
It's hard to avoid a few fingerboard chips when pulling out old frets. A piece of this .020" non-stick Teflon® in the fret slot will help keep your epoxy or super glue out of the slot as you replace or fill the chips. It pulls out easily after the glue is dry. You'll do a cleaner job, save work, and make refretting easier. The .020" x 6" x 6" (.508mm x 152.4mm x 152.4mm) sheet can be trimmed with scissors to the re-usable sizes you need.
Pulling old frets can chip a fretboard: keep the slots clean and glue-free for repairs.
A word from Grit Laskin, the King of Inlay:
"My inlay work frequently necessitates large cavities shockingly near to fret slots. In the past, I had no choice but to let epoxy spill over into the slot, requiring me to melt it out, afterward, with a heated saw tip. Then, along came my new best friend, StewMac's Fret Dam. This saves me so much work and completely eliminates the potential for accidental damage of the fret slots, the inlay or the fretboard binding. Now, I won't do a single inlay project without it!"
Teflon® is a registered trademark of DuPont.