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Make a knife out of an old hacksaw blade

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Step 4: Grinding down the blade

Picture of Grinding down the blade
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We spent about 45 minutes setting up the grinder, but hopefully your grinder is ready to go.

1. Dull any sharpness the blade may still have. 

2. Sharpen both sides of the other edge at an angle of 15  degrees.  Keep your fingers on the side opposite the grinder while you are
doing so.  

This should only take a few minutes once you set up the grinder.
 
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