How easy is it to put the object in the magnetic field?
The IFO3000 unit comes with a spacer training aid, which is wooden block preventing the object from passing the gravitional/magnetic ‘balance point’ and quickly sticking to the head. There is both a visual and an audible indication that the object has been captured in the magnetic field and can be released. After a few insertions using the spacer, you can try using your fingers as a spacer, eventually learning to insert the object using no spacer at all.