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Blade sharpening guide question.


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#1 mandolinmason

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Posted 25 March 2015 - 09:43 PM

I'm using one of these blade guides where 38mm equals 30*. Does anyone know how many mm would give me a bevel of 37*? I had been using a secondary bevel of 45* and I'd like to try something different. I lost my calculator and don't have the trig tables memorized. Thanks

#2 BGreer

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Posted 26 March 2015 - 06:47 AM

MandolinMason,

 

You didn't define which side of the triangle is the 38mm.

 

I am going to *assume* that the 38mm is the length of the blade from the guide to the stone....

If that is true, then change the 38mm to 31.6mm.

 

*If* the 38mm is the side of the triangle that is vertical from the stone to where the blade pivots...

then change the 38mm to 45.7.



#3 mandolinmason

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Posted 26 March 2015 - 08:33 AM

You're right. The 38 mm side is the hypotenuse. It doesn't extend to the center line of the opposite side from the 30* angle because of the guide bed. Thanks for the info.



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