Homemade Coffee Burr Grinder

 by spike3579
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Step 2: We Need Power

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The grinder head is perfect for transferring power from the mixer but it needs some modification to adapt it.

Kitchenaid attachments all have a square drive shaft that rotates inside of a cylindrical sleeve. The drive shaft fits into a square socket in the mixer and a set screw holds everything together.  I didn't want to feel left out so I decided to emulate this arrangement.

I had a threaded drill attachment that I ground square on one end to fit into the mixer.  The other end had a male thread so I drilled and tapped a hole into the shaft of the grinder to accommodate it.  I don't have a metal lathe but my friend has a wood lathe that worked just fine for this. 
 
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