Hi all. I'm getting confused on all the type of straight razors blades. I understand some but have questions about like: What hollow ground means in its variations?, is spike point and square point the same?, can a wedge be a round point ? and how can you tell the difference between a wedge and a concave blade by a picture (it seems hard depending on lighting)?
Is there a document out there that has all about blades?
Thanks,
John