> Will you invert poles once the 'door' is near your EM ? Is it
> imperative to use an EM ?

Hi Rodolfo,

Simply turning off the current will make the 'door' magnet stick to
the end of the iron core. Which I think makes it and the EM a good
pair. If it was necessary to release the magnet with little or no force
(ie not manually) the current can be turned on to repel it. Still having
a think about that part of the mechanism

Joe
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