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Thread: Sharpening Question!!!!

  1. #1
    Join Date
    Apr 2007
    Location
    Red Deer, Alberta, Canada
    Posts
    618

    Sharpening Question!!!!

    I just got my Vari-Grind jig from Oneway this morning and am very pleased with it.
    I've used it on my 3/8" Spindle Gouge and sharpened it at about 30 degrees. Now I'd like to sharpen my 3/8" Bowl Gouge. I have yet to do any serious bowl turning but would like to get it ready. What degree of grind do you bowl turners suggest I sharpen it at? I'm sure it shouldn't be the same as the Spindle Gouge but have no idea what the proper angle should be.
    Is there a consensus as to the proper angle or does each turner just do what he feels is the right thing for him/her?

    Thanks!!

  2. #2
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    30,014
    Gord, I don't know what actual angles I use. I just try to match the way it came from the factory, and if I don't like it that way, I'll experiment in both directions. No idea what that the angles would measure. Hopefuly there are others here who can offer more finite advice.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  3. #3
    Join Date
    Aug 2007
    Location
    Drums, PA
    Posts
    292
    Ditto what Vaughn said.

    Also, I sharpen my spindle gouges and bowl gouges the same.
    Just one setup to think about.

  4. #4
    Join Date
    Jan 2008
    Location
    Stow, OH
    Posts
    151
    There is no definitely answer to your question.
    How many GB you have? What shape of bowl do you use it for (deep or shallow)? Which style you want to turn?

    If you follow Stuart Batty style of turning, he suggests 40 nose angle. With that sharp angle, it is less effort to slice through wood. But it limits the depth of the bowl you can hollow and still riding on the bevel. It would require a second BG of blunt angle for the bottom of not so shallow bowl.
    His style of grinding doesn't do well with the jig.
    YouTube - Tool Design and Grinding with Mike Mahoney

    Another is the popular Ellsworth type of grind. It is 60 ~ 65 nose angle. This is a suppose do it all kind of grind. Just like the Swiss Army knife, it is not the best knife or screw driver.
    Sharpening.pdf (application/pdf Object)

    Of course, there are a lot in between and completely different grind as well, like the traditional grind.
    IMO, the best grind does not exist, we gain some lose some. If whatever grind works for you, keep it.
    Gordon

  5. #5
    Join Date
    Dec 2007
    Location
    Los Angeles, CA
    Posts
    2,668
    It depends on the type of turning that you intend to do. Here are some links that you might benefit from:

    http://www.sdwt.org/forms/Grind20061104.pdf


    http://www.woodcentral.com/newforum/grinds.shtml

    http://www.woodturningdesign.com/askdale/14/14.shtml

  6. #6
    Join Date
    Feb 2007
    Location
    Inside the Beltway
    Posts
    2,666
    30 degrees? I've always heard 60, like here:

    http://www.newwoodworker.com/reviews/srbyfngnlrvu.html

    But I guess it depends on how you measure, or rather which side you're looking from...

    Speaking of 'it all depends', try this site:

    http://www.woodturningdesign.com/askdale/14/14.shtml


    Want to get more confused? Try this:

    http://books.google.com/books?id=vh3...d-nHI3cBYbSQeA

    Hope this helps,

    Thanks,

    Bill

  7. #7
    Join Date
    Feb 2007
    Location
    Inside the Beltway
    Posts
    2,666
    Geez, Mohammad, you beat me to it by four minutes! Takes me longer than that just to type!

    Thanks,

    Bill

  8. #8
    Join Date
    Apr 2007
    Location
    Red Deer, Alberta, Canada
    Posts
    618
    Thanks for the replies, guys!
    I'll check out some of these links. I appreciate the help.

  9. #9
    Join Date
    Oct 2007
    Location
    Schenectady, NY
    Posts
    912

    Oneway Website

    Gord,

    Oneway has a series of videos on their website on how to use their sharpening system. Take a look and see if it can help.

    http://www.oneway.ca/multi-media/index.htm

    I found them very informative.

    It also depends on how you are measuring your angle. Are you describing the angle formed by the long axis of the gouge and the bevel ? If you are the 30 deg. is good for a spindle gouge. As has been said already, about 40 deg. is good for a bowl gouge when measured the same way. More metal under the cutting edge for better strength.
    Don Orr

    Woodturners make the World go ROUND

  10. #10
    Join Date
    Apr 2007
    Location
    Red Deer, Alberta, Canada
    Posts
    618
    Thanks Don, I'll check that out.

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