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Burr and matting media for vibratory tumbler to nicefy steel

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tonyfoale:
An update on my HF tumbler. 
In original form the out of balance weight is at the bottom of the motor.  I considered this as incompetent design, totally sub-optimal, and thought that it should be raised to fit between the top of the motor and below the bowl.  I removed the motor and weight and offered it up to the bowl upside down.  It looked like with minimal mods it would fit.
The original weight was from round bar and to get working clearance I would have to space the downward more than I wanted so I made a replacement weight from some scrap 1/2" steel plate.  The original was also mounted far out on the motor spindle so I cut the spindle shorter and mounted the new weight as close to the motor as possible. with these mods I only had to space the motor downwards by the width of a washer.  Quite acceptable to me.  All that remained was to drill a hole in the base to reroute the motor cable to the switch and power supply.
The first was with an empty bowl and it was immediately obvious that the bowl was vibrating quite a bit more.  Loaded with about 1.5 kg of the plastic abrasive media the flow pattern of the media was very different and much more active.  My assessment of the original design was proved correct but the really annoying thing is that i added no additional parts and the manufacturing cost would not have changed to make it properly.
I'll post some photos of the mods and video of the agitation in the next few days.

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