I'm following Birk Peterson's published plans (Machinist's Workshop
April/May 2003) to build a magnetizer/demagnetizer using the
coil from a surplus solenoid. On first pass it worked real well but after
two or three 2 second cycles it burned up the coil. The coil came from a
big Dormeyer intermittent duty relay. If I use a coil from a continuous duty
relay will it survive longer?

Any advice?

It's a 115 Vdc circuit with a bridge rectifier to energize dc to mag and A/C
to demag.

Thanks in advance.

Rick