Advise size, shape, quantity of your rusty metal pieces.
Dependent on how rusty they are, just a vibrator system may not do the job properly.
As you intend using a 1HP motor, it appears the parts are small, and your quantity is also quite small - If so, sand/shot-blasting may be a better alternative.
Reply please, with
Kind Regards....
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"The number of inventions increases faster than the need for them at the time" - SparkY
The tool that is often used for this task is the "needle gun" (nothing to do with the Prussian rifle of the same name).
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