hey everyone i know this is a dumb question but how is a hollow ground blade sharpened can it only be hollow ground again when it gets dull or can i just use my trusty sharpening stone and also how is a hollow ground edge put on a knife can anyone tell me exactly how it is made thanks for any help i am learning so much reading the posts you guys are great thanks ryan
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hollow ground blades....
- Thread starter sudsy909
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- Aug 6, 2003
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Ryan,
Blades are generally hollow ground on a contact wheel on a belt grinder. This gives the sides of the blade a concave geometry, as opposed to a convex bevel, which resembles an apple seed in cross section. The cutting edge itself isn't hollow ground. The edge can be sharpened on your stone without any problem. That sounds kind of confusing doesn't it?
Todd
Blades are generally hollow ground on a contact wheel on a belt grinder. This gives the sides of the blade a concave geometry, as opposed to a convex bevel, which resembles an apple seed in cross section. The cutting edge itself isn't hollow ground. The edge can be sharpened on your stone without any problem. That sounds kind of confusing doesn't it?
Todd
It is as Mr. Robbins says. If you were to press a piece of flat steel against the edge of one of those round grinder stones on a bench grinder (the kind commonly seen with a motor in the middle and a stone on either end of it), and then move it side to side you'd get a trough running along the piece of steel. Flip it over and do it again so the troughs meet at one edge, and you'll have a hollow grind of sorts. Knifemakers use a loop sanding belt that travels over two or three metal wheels, one of which is faced with rubber (contact wheel). This makes for smoother grinding than a stone. The wheel diameter can be varied, for big or small blades. If the two troughs meet at infinity, you have a zero ground blade. It can be resharpened by putting it on the original wheel again, but that would wear out blade space rather quickly. Better perhaps, to establish a secondary bevel on a stone by conventional "slice the stone" sharpening methods.
- Joined
- May 3, 2002
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You're over-thinking it a bit. Simply put, the hollow grind is just a blade design (grinding method) that lets a knife have a thick and strong spine but still get thin enough near the edge to have a good edge. The classic Buck knives are ground this way.
No biggie. Just sharpen it just like you would anything else.
- Joined
- Sep 3, 2003
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sudsy, no offense intended whatsoever!!! however, just a gentle suggestion: please throw in a little punctuation in your posts, to make them easier on the eyes. i had some trouble breaking apart the sentences the first go round. welcome to the forums!!!
abe m.
abe m.