How to sharpen hollow grind (Spyderco native)?

J

jeffreyliu838

Joined
Oct 7, 2007
Messages
332
When I sharpen knives, I usually grind down the bevel a little, so the resulting edge geometry will be the same as before, but I don't think I can do that with a hollowgrind without losing the advantages of a hollow grind because it will change the grind near the edge to a flat grind. I plan on just sharpening the edge and forgetting about the bevel, but I'm just wondering how BF does it. Thanks.
 
?? I'm a bit confused. All hollow ground spydercos have a flat ground edge bevel. So I'm not quite sure what the problem is.
 
When people talk about different grinds (flat, saber, hollow, whatever) they are usually referring to the primary grind of the knife, the grind where the steel starts to narrow from the full thickness of the blade. The secondary grind which narrows further down to the cutting edge is usually flat on production knives. Some folks round this into a convex edge, either intentionally, or accidentally if they can't hold a consistent angle when sharpening free hand. I've never heard of anything with a hollow edge grind, and I really can't imagine a practical way to create or maintain one. You can sharpen, polish, and/or strop a knife with a hollow grind just the same as any other grind. With normal use and sharpening you might have trouble a few decades down the line when you've removed enough steel that the part of the blade where the primary grind transitions to the secondary grind is too thick for efficient cutting. You'll have the same trouble with any grind after enough sharpening with the exception of a Scandinavian grind, or "zero edge" grind where the primary grind goes all the way to the cutting edge.

Edit: Here's an article that explains the different types of knife grinds better than I can: http://backyardbushman.com/?page_id=13
 
Last edited:
You must log in or register to reply here.
Back
Top