Hello Heritageman,
You can get the magnets here,
http://www.magnetsource.com/airfieldmodels/. You can order then with or without the steel pole peices but be careful, the shipping can be a killer.
As you can tell by this thread, I really think this is the way to go.
Keep tuned as I will soon be showing some fixtures that I made that I will use to build the fuse.
Thanks for looking in.
Miguel