Help on how to make a convex edge

[EAGLE1028]

With all the recent discusion on the superiority of a convex edge, is there a simple process in converting an existing edge into convex ? My use of the word " simple " does not involve belts or use of wheels. Any direction would be appreciated.

 

[morestag]

Freehand sharpening will tend to convex an edge just from not keeping the blade at a consistent angle. Stropping will help it along. Neither method is quick. That is why most makers that put a convex grind on their knives do it with a belt sander.

 

[silverdragon33]

sandpaper and a mousepad or strop. there was a link in the other thread that shows you the basic motions.

 

[thombrogan]

Freehand sharpening on most benchstones (diamond, oil, water) will do it. Your joints move in arcs, your hands have compressive tissue, and your nervous system can only maintain a steady angle for so long.

Afraid that you're nervous are too stone-cold steady? No problem! Run your benchstone in little circles, ovals, ellipses, or semi-circles up and down the edge to sharpen, deburr, and polish.

Too crude? Then let Koki Iwahara show you how it's done without circles.

 

[resinguy]

http://www.barkriverknives.com/convex.htm

 

[Bigfattyt]

Sandpaper sheets on mouse pad will convex your edge in a few hours. I did a 4 inch folder in a short evening on 150 grit. Once you have the edge profile you like, switch to 220, then higher if you want. I went straight from 220 to a 4 sided strop with three different polishing compounds and one plain leather. Just take one of your cheaper knives to try it on. After a couple work out ok, try it on a nice knife. I did one folder, and started to take the curve out of my SS and convex it. A straight edge will be easier to convex than a curved one.

BarkRiver knives home site has a good tutorial on how to do it

 

[Tyrkon Lawson]

You have definitely come to the right place.

 

[knife hunter]

here is Justabuyers online class he did for folks.


check it out. He's good! real good

http://www.bladeforums.com/forums/showthread.php?t=506342&highlight=Justabuyer

 

[EAGLE1028]

Thanks guys!!!!!!!!!!!!!!!!!!

 

[silverdragon33]

Sandpaper sheets on mouse pad will convex your edge in a few hours. I did a 4 inch folder in a short evening on 150 grit. Once you have the edge profile you like, switch to 220, then higher if you want. I went straight from 220 to a 4 sided strop with three different polishing compounds and one plain leather. Just take one of your cheaper knives to try it on. After a couple work out ok, try it on a nice knife. I did one folder, and started to take the curve out of my SS and convex it. A straight edge will be easier to convex than a curved one.

BarkRiver knives home site has a good tutorial on how to do it

i would go a little higher than 220 before stropping . . . just a little . . . .

 

[voracious]

often i'll remove the shoulder at the top of the edge bevel with a few strokes of a file before i move to 150, 220, 400, 600, 800 grit on a mousepad, usually no higher cause i like a little toothiness.

 

[Bigfattyt]

i would go a little higher than 220 before stropping . . . just a little . . . .

I was going to, but I picked up some aggressive stropping compound forr removing scratches from tool steel. It pulled the scratches out fast, and was much less messy than the sand paper. I have some finer grit sand paper I will be using on the SS before I move on to stropping.