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Bur on skew (Read 418 times)
 
Rick Caron
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Bur on skew
May 17th, 2019 at 5:16pm
 
Doesn't  sharpening a skew produce a bur on the top side?  I can feel it with my finger nail.       Seems to work better.   Some sites says    there's no such thing as a bur on a skew.
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Ed Weber
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Re: Bur on skew
Reply #1 - May 17th, 2019 at 6:54pm
 
Rick Caron wrote on May 17th, 2019 at 5:16pm:
Doesn't  sharpening a skew produce a bur on the top side?


Yes

Typically, a skew isn't supposed to have a burr just a sharp cutting edge. A skew is meant to have the same profile on either side, a burr on one side and not the other may have it's benefits, it's just not a traditional skew grind.
It's your tool, grind it how you want  Smiley
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Ralph Fahringer
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Re: Bur on skew
Reply #2 - May 18th, 2019 at 8:15am
 
I would think that a burr on one side might make it harder for it to stick into the wall of your shop as you throw it. Shocked

I was taught to hone the edge of a skew after grinding it.

I also hate skews so.... Roll Eyes
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robo_hippy
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Re: Bur on skew
Reply #3 - May 18th, 2019 at 11:01am
 
When I got a 1000 grit CBN wheel, I figured my skew problems were over. I found out that with that edge, it would cut fine in one direction, but not the other. I figured out that was because of the burr. Yes, a very fine one, but it did interfere with the cut. I had tried a number of hand hones, and they never got me good results, which was mostly due to pilot error..... I dusted off my Tormek, and got a new honing wheel, and now use it. That makes a huge difference. I can still feel a very tiny burr, bud don't want to go through 4 different honing compounds. Even honing with a 1000 grit diamond card can still leave a tiny burr. I am not good with the skew other than when used for peeling cuts...

robo hippy
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Ralph Fahringer
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Re: Bur on skew
Reply #4 - May 18th, 2019 at 11:05am
 
...or peeling apples.
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Don Stephan
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Re: Bur on skew
Reply #5 - May 18th, 2019 at 7:03pm
 
I would expect that any sharpening that removes metal will leave a burr on the other side, even honing with a very fine stone.  I think I once saw suggestion to end last honing by alternating single strokes on each side.  That last stroke will still in theory leave a burr, just an extremely small one.

That first skew cut would remove any burr.
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Ed Weber
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Re: Bur on skew
Reply #6 - May 18th, 2019 at 8:27pm
 
Don Stephan wrote on May 18th, 2019 at 7:03pm:
That last stroke will still in theory leave a burr, just an extremely small one.


Correct, all you are doing is trying to lessen the size. Just like sanding, removing smaller and smaller scratches until you're done.
I sharpen  bench chisels with a jig/guide (no power tools) and there is still a burr that needs to be removed, honed off.
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Rick Caron
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Re: Bur on skew
Reply #7 - May 19th, 2019 at 2:24pm
 
Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to Login or Register;                         now i know why it's easy to get catches using a skew.  Concave grind  vs  a  convex grind.
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Robert Fischer
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Re: Bur on skew
Reply #8 - May 19th, 2019 at 4:47pm
 
Rick Caron wrote on May 19th, 2019 at 2:24pm:
Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to Login or Register                         now i know why it's easy to get catches using a skew.  Concave grind  vs  a  convex grind.          

Thanks for that YouTube link!   Very helpful. Thumbs Up
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Rick Caron
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Re: Bur on skew
Reply #9 - May 19th, 2019 at 5:00pm
 
Capt   Eddie      is good    you tube to go to
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Don Stephan
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Re: Bur on skew
Reply #10 - May 19th, 2019 at 6:29pm
 
Even with a hollow grind, the radius of curvature, that of the wheel, is huge compared to a chair leg, a top, a lamp pull, . . .  The skew taking a shaving is not touching the wood at both the cutting edge and the bevel heel.  Paint the entire  bevel with a felt tip marker and use for several minutes.  The marker ink is going to be worn off just in a very narrow band at the cutting edge, whether a convex grind or a concave grind.

A convex grind is changing the included angle at the cutting edge, making the included angle larger.  Some feel a larger included angle is harder to use.

If more comfortable with a convex grind, by all means do so.
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robo_hippy
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Re: Bur on skew
Reply #11 - May 20th, 2019 at 10:38am
 
I have found the convex grind easier to make long curves with, but more difficult to get long straight surfaces with. Opposite for the concave grind. I get the best surfaces with a peeling cut....

robo hippy
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Rick Caron
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Greer, South Carolina, USA
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Re: Bur on skew
Reply #12 - May 20th, 2019 at 5:32pm
 
So far  i only use a skew for peeling cuts......  Also true with a parting tool.
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Rick Caron
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Greer, South Carolina, USA
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Re: Bur on skew
Reply #13 - May 22nd, 2019 at 2:30pm
 

guess i'll never learn the skew.        Guess i'm all skewed up.      Grin
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« Last Edit: May 22nd, 2019 at 2:32pm by Rick Caron »  
 
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John Grace
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Re: Bur on skew
Reply #14 - May 27th, 2019 at 11:39am
 
I believe a burr is inherent with the act of sharpening...I've seen YouTube videos where 'hard core' skew users will use a super fine slip stone to clean-off that burr directly after sharpening.  Not completely sure myself...just passing along what I've seen.  Good luck...
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