Thread: proper included angle

I doubt manufacturers actually measured the angle… but throughout the history of making razors, most (if not all) manufacturers adhered to the proportion of the blade about 3.5 times the thickness of the spine.

So for example: 4/8th would be bit over 1/8th inch spine, 5/8th would be 3/16th inch spine, 6/8th razor would be a bit under ¼ inch spine, 7/8th to 8/8th razor would be about ¼ inch or more spine thickness.

I agree with Smythe here. When I make razors I like to stick to these guidelines. most of my razors are 1/4 spine and 8/8 blade. I have found that even a little thinner on the spine makes honing difficult and a couple layers of tape are needed to beef up the spine.

These guys are giving you some good info

Bob @ OCD Razors