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One of the problems I have on my Delta SA180 is getting a convex edge that can be completely touched up with one pass - I have to make about three passes with each grit and blend the passes with one another. I'm guessing I don't take off enough metal on the back portion of the edge and am not using enough pressure. I'm wary of using too much pressure and rounding the edge however. I really need a tutor <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> Alternatively, some good vids of your techniques (which really show how much belt deflection you should be getting to get cetain results) would be helpful.


Ploarbare,

I don't really ever get a final result in one pass - not even when just trying to touch up a previously highly sharp / well convexed/profiled knife that just needs a touch-up.

When just touching up a knife, I still tend to just use a very fine grit and pass about 3-4 times per side and then 2 each, 1 each or similar till how I want it.

When reprofiling, I use more pressure. But, personally, when fine tuning I back off on pressure more and more till I am just lightly grinding. But, that is just me. I can't speak for everyone else. I am sure with different equipment, different belts/grits, different knives (sizes and hardness), etc. techniques could very. Plus, there is often more than one way to do something. I was never taught. I read, practiced and experimented.

If a knife needs a lot of work, it can take a LOT more passes.

I think it is possible to round over an edge. But, not always from pressure. Tightness of belts and angle of blade can be a factor.

Watch out on your tips. A VERY common error is to over-grind the tips. With the wrong technique on certain blade shapes, you can severely alter the tip's shape if you over-grind it - and it can require a LOT of regrinding to fix. So, just watch out for that!!!



I would like to be able to help you on the videos, but I don't have a video camera/recorder.

However, BrianA. made and posted a link to some of the best sharpening videos I have seen at the bottom of page 1.

See: The Backyard Bushman - Convex Knife Sharpening with a Belt Sander - By BrianA. <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" /> <img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />

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JYD #39 I prefer "SATIN" blades!!!