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Grind Angle Calculator

Discussion in 'Grinders' started by dancom, Dec 12, 2016.

  1. dancom

    dancom Dust Maker Best Shop Tool

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    Now that the dunk bucket is truly a block of ice, I have been playing more indoors.
    I got to fiddlin' with some php on my web server and come up with this calculator.

    http://dcknives.com/public/grind_angle.php

    It's based on the stock thickness and desired grind height. The result is the angle in degrees, using the formula:

    atan(thickness/height)*(180/pi) for single bevel blades

    or

    atan((thickness/2)/height)*(180/pi) for double bevel blades

    Let me know if you find it useful. Or maybe my math is rusty.

    Cheers,

    Dan
     
    John Noon and Swivel like this.
  2. John Noon

    John Noon Well-Known Member

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    it matches up nicely with my spreadsheet when edge thickness is zero
    I use the edge thickness version occasionally
    =DEGREES(ATAN((0.5*(StockThickness-EdgeThickness))/BevelHeight))

    with no edge thickness
    =DEGREES(ATAN(((0.5*StockThickness)/BevelHeight)))
     
  3. dancom

    dancom Dust Maker Best Shop Tool

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    Yes, there will always be some small issue with the precision depending on how thin you want to go before setting cutting edge and some rounding on the output. But for a guide I think it will work.

    Sorry to all those metric folks. :(

    Dan
     
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