I don’t use any, I just polish the fretboard too to remove any scuffs from polishing the frets. Works perfectly.
If you get the metal ones, sand them before using to remove any accidental burrs, or you risk a scratch that you’ll need to buff out. Guess how I found out
Yeah for serious work the low-tack tape is the way to go. Though I even file without it, both for ends and crowning. I wouldn’t use a full size leveller without tape though, even though it’s probably safer than a crowning file.
That neck rest is NICE. I love cork btw.
I use #000 steel wool for final polishing - quick and very effective, fret alloy is rather soft-ish.
Can’t find a winder that suits Gotoh style keys, and winding by hand goes quick too.