"Lew Hodgett" wrote in message
Depending on magnet size, drill a blind hole with a brad point drill 5/8"
dia and below or a forstner bit above 5'8" dia so that magnet is flush.

Rough up back side of magnet with a coarse grinding wheel.

Mix up some slow laminating epoxy thickened with microballoons to the
consistency of mayo.

Butter hole with epoxy and set rough surface of magnet in hole and wait 24
hours before trimming excess "green cured" epoxy away.

Geez Lew! All that time and effort to mount a magnet, makes me wonder how
long does it take when you have a "big" project to build?