hey i got a rare earth magnet from radio shack the 1/8 " one-what size hole do i drill and how do you lock it in .My guess was to use a smaller drill bit and hand file it till it just barely fits in then use lock tite bearing and sleeve formula to secure it.I wanted to see what everyone thinks about doing it this way.The only problem i see is that the magnet is really thin-does anybody have a favorite way to do this? than x