Two of the best tips on sharpening I've seen (and since used) are to not angle the burnisher very much when turning the burr--just about 2 degrees is enough, and the other thing is not to put much pressure on the burnisher--about 8 or 10 ounces is enough. I was way overdoing both of these steps.
Since you intend to use scrapers in connection with your finishing work, another really effectivet use of the scraper is to level and smooth the finish between coats of laquer, varnish, poly, etc. You just very lightly drag the scraper over the surface, and it will shave off any roughness. Much more pleasant than sanding, and it creates almost no dust.