You should be able to get Ferrite magnets, or there are different grades of rare earth magnets.
There was a build project in Model Engineer for a magnetiser, might have been in the 1990s.
If you get to the on line Model Engineer index, an enter Magnetiser, you will find a page full of both Magnetisers, and Demagnetisers from 1902 for the first one, the one I was thinking of was in vol 177, no 3942 A simple magnetiser by Malcolm Richards.
Ian S C
Edited By Ian S C on 20/10/2015 09:54:44