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Don't be confused

magnetism would prefer to travel through any ferrous object: ferrites, steel washers, etc. In doing so, those objects will absorb the magnetic field produced by the motor's operation and thereby shrink the size of that field.

A VPI 'Magic Brick" is not ideal for this purpose because the field generated by a motor is toroidal in shape (donut shaped). You need that hole in the middle to allow the magnetism to drop through in order to complete the magnetic path.

I believe a reduction in the size of the EMF field has a direct correlation to a reduction in its effects on nearby circuits, including the laser readout heads.


Stu

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