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Good plan - there is a ton of information there.

7/8 and 8/8 refer to the width from spine to edge indicated in fractions of inches. There are bigger ones for sure (my biggest razor is a 17/16,...

Unfortunately the wiki appears to be down at the moment (Library link at top-left of page), and if you do some digging there you'll find lots of info on blade geometry and grinds, both of which...