Relief Grinding Parallel to Edge?

M

Mtn Hawk

Joined
Nov 8, 2005
Messages
270
When relief grinding (removing metal rapidly to thin the edge) does it cause problems stroking the hone parallel to the edge (in the direction of the handle to the tip) rather than the usual method of stroking the hone at a 90 degree angle to the edge (in the direction of the spine to the edge)?

I would think parallel scratches would not weaken the edge as much as scratches perpendicular to the edge.

I'd appreciate answers based on real-world experience and knowledge. Theories and guesses wouldn't be helpful.

Thanks!
 
Course parallel scratches will allow the edge to chip easier from lateral pressure. Fine or polished parallel scratches should be fine.
 
For sharpening the edge, I wouldn't do this, I think it would weaken it. For a relief grind, I don't know. You might want to post this in the maker's forum, lots of knowledgeable people there.
 
me2-- I never thought about lateral pressure. That makes sense

sodak-- I suppose if grinding parallel to the edge was a good method I'd have heard or read about it by now but I might do as you suggest and post in the maker's forum.

Thanks for your replies! :)
 
As long as the relief is properly polished, it doesn't matter.
 
Bill DeShivs and Grampa, thanks!

The scratches are shallow even at 120 grit, and I strop. I am probably over-thinking this one.
 
Oh, I was thinking something like draw filing. I tried that after a thread on the Makers section raved about it. I can say I was impressed. Course draw filing left a series of parallel grooves a little more than 0.001" deep. This would surely lead to cracking if the edge were loaded laterally. Of course, these were so deep, I cant imagine anyone with a choice would leave them.
 
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