>
> >For field samples, the hand shaker shown in these pictures is hard to
> beat and I would imagine these jars could be shaken by a simple machine.
>

Plans at
http://scientificbeekeeping.com/sick-bees-part-11-mite-monitoring-methods/

>Actually all that is needed to shake jars is a deck of some sort standing
> on on four springs with a motor attached somewhere driving a shaft rotating
> at the desired frequency.


For research purposes, all samples must be shaken identically.  This makes
it a bit more interesting in designing a table, as springs may allow the
applied torque or linear motion to affect one part of the table more than
another, due to differential movement.  Can be overcome by using 3 or 4
pivot points to ensure that all corners move exactly the same.  Not so
important for a beekeeper simply wanting to shake samples. I'm learning as
I go.
-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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