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  1. #1
    Join Date
    Feb 2006
    Location
    Lindfield N.S.W.
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    62
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    5,643

    Default How do you set your angle for the grinder?

    If you are using a bench grinder to sharpen a chisel or plane blade, how do you determine the angle to hold the blade in order to grind the bevel angle that you want (esp. for setting the angles of a jig or holder)?

    There are two methods I know:
    1. colour the bevel of a chisel of a known angle with a marking pen or marking fluid, set the angle to what you think you want and check by holding the bevel lightly against the wheel and turn the wheel by hand - the scratch pattern will show if you have got the angle right.
    2. use the Tormek angle measurer:


    Has anyone got a good method that falls between the two?
    Cheers

    Jeremy
    If it were done when 'tis done, then 'twere well it were done quickly

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  3. #2
    Join Date
    Apr 2005
    Location
    kyogle N.S.W
    Age
    50
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    4,844

    Default

    I've got one of those things too...I don't use it as is being shown in the picture anymore.....

    I just eyeball it....just looking to match the wheel to the existing grind on the blade......so, I just get my eye in around the side, like your seeing there and set it. Its not that crucial in my opinion to worry about perfect angles....A couple of degrees out here and there doesn't make a difference.

    Anyway to get it perfect you have to know what the diameter of the wheel is at. And thats always changing. So you have to frig around measuring that as well. More time wasted.

    What I do still use are those notches around the jig. I think thats particulary handy. Can get a feel for what an angle is, but some days its nice to check up against the light. Good enough accuracy for me.

  4. #3
    Join Date
    May 2004
    Location
    Pakenham, outer Melb SE suburb, Vic
    Age
    54
    Posts
    4,158

    Default

    Quote Originally Posted by apricotripper View Post
    What I do still use are those notches around the jig. I think thats particularly handy. Can get a feel for what an angle is, but some days its nice to check up against the light. Good enough accuracy for me.

    Eyeball does it for mine, usually matching the existing bevel if it's performing OK.

    I have a Vicmarc centre finder with the "V"s around it like the Tormek gauge, I reckon (for turning tools anyway) a series of templates like the Woodcut one below, that registers against the bottom of the blade, would be better; would be easier to register against the longer surface & see the resultant angle .



    Cheers..................Sean


    The beatings will continue until morale improves.

  5. #4
    Join Date
    Feb 2007
    Location
    Katherine ,Northern Territory
    Age
    69
    Posts
    1,977

    Default

    Quote Originally Posted by jmk89 View Post
    If you are using a bench grinder to sharpen a chisel or plane blade, how do you determine the angle to hold the blade in order to grind the bevel angle that you want (esp. for setting the angles of a jig or holder)?

    There are two methods I know:
    1. colour the bevel of a chisel of a known angle with a marking pen or marking fluid, set the angle to what you think you want and check by holding the bevel lightly against the wheel and turn the wheel by hand - the scratch pattern will show if you have got the angle right.
    2. use the Tormek angle measurer:


    Has anyone got a good method that falls between the two?

    I laminated three pieces of 19mm x 40mm pine together cut one end at 25deg and mounted it on a board which I clamp to the bench in front of my grinder.
    Not anything fancy but it works.

    Kev
    "Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
    Groucho Marx

  6. #5
    Join Date
    Jan 2002
    Location
    Melbourne, Aus.
    Age
    71
    Posts
    12,746

    Default

    The first grinder platform I got from Carba-tec way back when had templates for various turning tools. One face to lay on the platform and the second off at the right angle to lay on the wheel in order to achieve a given bevel angle.
    Cheers, Ern

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