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Thread: how to get a grinding angle

  1. #1
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    how to get a grinding angle

    There is talk of the Raptor set going on right now.
    I saw the link for the whole set and it has many angles.
    However, I need to figure out how to set a tool rest for a ten degree angle. Other than the "eyeball" method, I would like ideas.
    It is for the hollowing carbide cutters below.
    Attached Thumbnails Attached Thumbnails cutters.jpg  

  2. #2
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    Frank, if those are carbide, I don't think your grinder is going to sharpen them. I believe most carbide edges are sharpened with diamond stones. If they are HSS, then your grinder will be fine.

    As far as your 10 degree question, I've always just used my eye to match the existing grind on things like handled scrapers and scraper bits for my hollowing tools.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
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  3. #3
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    Frank, seems like you can cut a jig from scrap plywood -- You know the wheel diameter and the relation of the tool rest to the center of the wheel --
    something like this ...
    Attached Thumbnails Attached Thumbnails Drawing1 (758 x 582).jpg  

    Tony, BCE '75

  4. #4
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    Quote Originally Posted by Vaughn McMillan View Post
    Frank, if those are carbide, I don't think your grinder is going to sharpen them. I believe most carbide edges are sharpened with diamond stones. If they are HSS, then your grinder will be fine.

    As far as your 10 degree question, I've always just used my eye to match the existing grind on things like handled scrapers and scraper bits for my hollowing tools.
    My misteak. I just went to the Don Pencil site and found that they are HSS. And, I was skeeptikel about sharpening carbide on my wheel also.
    A plus, much to the credit of Don Pencil's honesty. He actually suggests going to a machinist supply house and buying replacements for about $1.50 each instead of ordering from him. I find that just super refreshing in these days of tooth and claw competition. Good on you, Don.

  5. #5
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    Frank, I use a set of simple templates:
    Attached Thumbnails Attached Thumbnails DSC02911 (Small).JPG   DSC02912 (Small).JPG  
    Chas. just a traveller on the road of time.

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  6. #6
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    Quote Originally Posted by Chas Jones View Post
    Frank, I use a set of simple templates:
    That's good. Simple. I like simple.
    Thanks for the tip, I'll make up one of those in 10 degrees.

  7. #7
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    Thumbs up

    Quote Originally Posted by Frank Fusco View Post
    That's good. Simple. I like simple.
    Thanks for the tip, I'll make up one of those in 10 degrees.

    Me too, thanks Chas.

  8. #8
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    For me ... if I have something who's angle I need to repeat ... I mark the bevel with a sharpie and adjust the rest to "close" and test it by holding the cutter up to the wheel as though I'm going to sharpen - turn the wheel by hand and look to see if all the sharpie is removed. Works swell for me
    Jason Beam
    Sacramento, CA

  9. #9
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    I do like Jason Frank. It works great. Takes 30 seconds to line it up.
    Bernie W.

    Retirement: Thats when you return from work one day
    and say, Hi, Honey, Im home forever.

    To succeed in life, you need three things: a wishbone, a backbone and a funnybone.

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