Have not coated magnets but on ferrite cores I prefer the old fashion
Shellac.
Varnish or Enamel could also be used.
Best method for a magnet would probably be to poke 3 pins through a playing
card and let the magnet hold to their points, you could arrange several
triangles of pins on one card and poke a hole in one corner to attach a wire
for dipping and hanging-to-dry.

KF4HAZ - Lonnie

----- From: "Mike Hord" <gaidinmd@

> I find myself with a few dozen NdFeB magnets needing a
> highly biocompatible coating.  I have attempted plating,
> but it doesn't seem to work too well (I suspect this is due
> to the boron component, but that's just conjecture).
>
> Current ideas include CA adhesive and nail polish; I'm also
> considering enamel paints for plastic models.
>
> The biggest PITA is that these magnets are .5mm square
> and .2mm deep.  Yes, that is a decimal.  Think "tiny piece
> of grit" and you'll have the image.  This makes most any
> methods dodgy, at best, but rules out many options
> straight away.
>
> I guess my hope is that out of the 1800 (?) people on the
> list, someone will have already gone through a similar
> trial-and-error process and can save me a little hair pulling.
> If not, then I'll be the one who knows in the future!
>
> Mike H.

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