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Stubborn burr removal

Sat Mar 15, 2014 1:12 pm

So I sharpened my daughters calphalon katana this am. Says its made of vg1. I brought it to 5k polish to see how it handles it but there were 2 small sections I had trouble with removing the burr. Tried abrading it with light edge leading strokes, cork, felt and still a small section with a burr. Finally got it off with my Mac honing rod but seems like this may defeated the purpose of the 5k finish. I've read about using a piece of wood to deburr. Would this have been more desirable compared to the home? Any other suggestions?

Re: Stubborn burr removal

Sat Mar 15, 2014 2:32 pm

I use a rod to remove the last of a stubborn burr at times too. After that I do a few very light edge leading passes on a high grit stone to restore the polish and clean up the edge. A few passes on a loaded strop after and the edge is usually screaming sharp by then.

Re: Stubborn burr removal

Sat Mar 15, 2014 3:27 pm

Sounds like you didn't bring the edge to a full apex.

A burr can still form in areas even when the apex has not been reached, return to your 1k and make sure the edge has a good burr down the length of the edge and that it flips easily with each pass.

If your still having burr problems drag the edge through soft wood a few times and finish with very light strokes on the stone. Edge trailing strokes might help too.

The honing rod likely induced a micro bevel thus correcting any grinding errors near the edge apex. It also dropped the fineness of your edge a few thousand grit by using the rod.

Re: Stubborn burr removal

Mon Mar 17, 2014 12:43 am

+1 Jason B.

Also, I find that removing stubborn burrs is easier when I use barley edge trailing strokes that run almost parallel to the edge, so that the knife is moving almost strait across the stone from heel to tip.

Re: Stubborn burr removal

Mon Mar 17, 2014 2:55 pm

I use ceramic rod and do alternating strokes till I can't feel burr. If burr is obvious on 1 side I work the rod in that area first.

Re: Stubborn burr removal

Mon Mar 17, 2014 3:10 pm

Jason B. wrote:Sounds like you didn't bring the edge to a full apex.

A burr can still form in areas even when the apex has not been reached, return to your 1k and make sure the edge has a good burr down the length of the edge and that it flips easily with each pass.

If your still having burr problems drag the edge through soft wood a few times and finish with very light strokes on the stone. Edge trailing strokes might help too.

The honing rod likely induced a micro bevel thus correcting any grinding errors near the edge apex. It also dropped the fineness of your edge a few thousand grit by using the rod.


+1 Better at putting that into words than I could ever hope for.

Re: Stubborn burr removal

Mon Mar 17, 2014 10:07 pm

I find that stopping on a 2"x10" of rock hard felt works pretty good or just stropping with chromium oxide between changes of stones, also works well.

Re: Stubborn burr removal

Thu Mar 20, 2014 5:29 pm

I don't have very high grit stones. I use dmt diamond plates. The extra fine is 1200 grit and the ceramic rod I use to deburr is also 1200 grit. My next step is stropping with a 3 micron compound on balsa followed by 1 micron diamond on balsa. I know it was explained that stropping could round the edges off but I find the edges uber sharp with this progression. Stropping is also less likely to create a burr.

Result is really sharp burr free edges. If the edges are rounded I can't tell.
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