The Funnel:

  The funnel can be fabricated from sheet metal, or you can purchase one from Bass Pro Shops.

  It is aprox. 5 inches deep.  This measurement will be needed to place the motor shaft at the correct depth later.
Mount the motor bracket with two bolts on each side.

Using ensolite pad or a worn out beer cool helps keep the noise and vibration down.
Install the motor support before installing the funnel.

Locate the motor support bracket so it is about 5 inches deep.  This will allow the shaft to protrude out of the funnel so a spin plate can be attached.
Drill around the funnel, through both layers and insert a rivet.  Rivet completely around the funnel.
Drill and rivet.

Then drill and rivet some more.
 Looking down, or is that up?
Side view

Shaft poping out, needs a spin plate

The motor is a 12 volt Model 2m197 Dayton Electric motor, Chicago Il. 60648.  I purchased this one from Granger Supply.  Really, most any 12v motor will do. A powerfull motor may spin faster and in a larger pattern.
Tear apart an old beer cooler and use for sound insulation.
   
   

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