Quote Originally Posted by rhensley View Post
Up until now every razor I saw with medium Grind was a 5/8 blade but the last 2 razors with medium grind on the blade turned out to be 6/8. would medium grind be 1/2 hollow or what. Still new at this and learning every day. I once told a friend who for sure knows more about this than I do not to be kind and just tell me I don't know squat. As long as I learn from it. I like to buy any where I can and lately it's off the bay and clean the razor hone it shave with it enjoy it for a while then sell it to chase another. I'm retired and enjoy keeping active at some thing. You can't fish and hunt all the time. Anyway thanks.
If I understand your question correctly, it is really just at the whim of the manufacturer. A lot of blades marked 'medium hollow' will have varying degrees of hollowness to them (defined by the width that is ground out and the radius of the grinding wheel). When we say quarter hollow or half hollow etc, it is really just a rough guide and not standardized, at least to a precise extent with razors from the 1800s. In fact, you will see blades marked 'concave' that are hollow ground, and others marked 'concave' that are the concave style seen a lot in older Sheffield razors where the grinding was turned 90 degrees to hollow out a smaller area on the lower half of the blade.