Shellac, padding lacquer, or poly wood sealer all work. You have to
decide which you like best. Try theim all. Here's my opinion on them.
Shellac is easy to use, but doesn't hold up if the user isn't neat with the
shaft and keep them waxed. Alcohol and hand oils tend to soften it.
Padding lacuqer is harder and more resistant, but takes a lot of
coats to really seal up the wood. Poly sanding sealer to me is the best since it fills nicely and seems more resistant to chemicals and heat.
All my observations and opinions. I've used them all, including the old "mule piss"golden rapid pad.(no longer offered), bowling alley wax,
butcher's wax, shaft cote, sailkote.