It's surprisingly easy to do. I did it with an iron and nail clippers to remove the frets. Then veneer and wood glue to fill the holes. Then sand it down, going finer and finer (I used quite fine, and a bit finer than that, and then steel wool or whatever it's called). Do all this with the neck removed from the body. Take your time with the sanding bit to get it all smooth and even. Then tung oil or Danish oil, one of the two, can't remember which. And that's it.
I then chose to get a new nut done by a tech, as the old one was sitting too high without the frets.
I can't play the thing, but it sits there, looking nice.