I almost hate to confess it. I have always finished heel caps with rasp and knife. I finally got smart, Wow, a coarse disk on a slow Dremel speed does a quick and very nice job shaping and trimming the heel and heel cap. I found a light stroking touch works best. Also, I would advise you use a mask, It throws a lot of sawdust and some of these fancy woods can be toxic.
So here are the tools. The sand paper on a round rubber block will finish the job.
With the heel plates attached and shaped, I turned my attention to the bodies, carefully sanding away all tool marks with 120 grit. Put a protective coat of shellac on the Englemann Spruce top so it would not get stained in the processes to come, and got started on fretting.
Installing frets is kind of a boring job- but it must be done. A little glue on the tang, tap the fret into the slot gently,
Seat it firmly with the fret press- and Voila, after about an hour of messing with them
The frets are installed. Tomorrow I will trim the ends, smooth them up on the belt sander and glue them to the necks. Then and only then can the necks be finally shaped and finished, the Pinecone peg head plate be attached and the last two frets put into each fretboard.