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I use 1-2 lbs of pressure only when removing an old, oxidised edge or correcting a bevel on a new razor. This is only done on the Norton 4000 and only as long as is necessary. Once the new bevel is...

Alan is right. Think of oxidised as rust. It has to be removed.

For a microscope you do not need anything fancy. Some people use a Radio Shack 60X-100X. I use a Micronta 30X. Theis guy has some...