>For example, a vibrator for getting air bubbles out of
>chocolate in the mold is handy, but the models sold as
>being for chocolate are expensive compared to dental
>laboratory vibrators. They are a little small, but good
>enough for low volume production

The vibrator is part of the tempering machine. It has another
attachment which can be used to fill spun products like easter eggs,
bunnes and other large molds .But for chocolate shells It can handle
usually two molds at a time, but if you are skilled at using it you
can prepare shells a minute-or two per pair of polycarbonate molds in
sequence....In half an hour you can fill roughly 50-60 molds for
shells and run it in the cooling tunnel continuously.
The backing off ( covering the filled shells with chocolates )takes
approximately the same time.

If you look closely at the construction( an if you have good hands in
doing mechanical things )
You can always improvise by making your own vibrator where you can
allow it to fit in more molds, The platform is supported by strong
spring with an electic motor that transfer the motion to a form of
contraption that creates the shaking action which is converted to
vibratinga action by the supporting springs. The rate of vibration can
be modified by turning a screw or nut to tighten or loosen up
vibrating know which will equate with different intensity of vibration
you need.