I use a Cabinet scraper burnishing tool to get the strop up to a good draw sometimes and for breaking in. This tool is nothing more than a "file" hard piece of round polished bar with a handle. I use it like a razor over the strop very fast till the strop gets warm and the nap comes up. You will notice that the burnisher gets very hot also. The burnisher I prefer is an oval shape in cross section with rounded edges. Using this burnisher on its edge brings up the nap and flat on the oval gets the surface good and supple producing draw.

PuFF