Drum sanders might be the perfect solution to your problem if you have one, but I don’t own that tool. The only drum sander I’m familiar with is a $10,000 machine owned by a professional cabinet maker which is one GREAT machine. I’m sure there are more reasonable priced machines, but my 24 X 24 shop wouldn’t have room for that.
So, I would solve this problem with a cabinet scraper. I used to use sanders to try smoothing out the differences of wood joints until I worked for the cabinet maker I mentioned. He introduced me to cabinet scrapers which can shave off woods by skin depths. The only problem with cabinet scrapers is that you need to learn to sharpen them. My cabinet scrapers have elevated my work from OK to pretty good.
-- Bernie: It never gets hot or cold in New Hampshire, just seasonal!
