Tools to bevel a rod magnets

[marcfrom]

Ok,

Same technic but with a differents tools

[mozz]

I have done some on the bench top grinder holding the magnets in my fingers. Would a file work with the magnets in a drill chuck? What about one of these deburring reloading tools? I have one will have to try it out. Anyone measured guass before and after doing this?

[Chuck H]

Anyone measured guass before and after doing this?

I thought about that too. I make knives sometimes and some austenitic steels will spot harden due to grinding heat even if you're carful and water dipping. So the contact patch when grinding clearly gets very hot. And alnico is surely harder than any of the annealed steels I've used. Since the grinding wheel position is stationary it might be worth setting up so the lower third of the wheel is in a water bath.?.

[mozz]

I was thinking the opposite. If the alnico gets damaged or weak, wouldn't that kind of lower the guass and "age" the magnets? Maybe it would even concentrate the unbeveled part? I think some winders intentionally weaken the magnets, or so they say. One set of single coils i made for a customer, i beveled for the first time, the guy loved them.

[Chuck H]

You might be on to something. But I think the lack of control over the "aging" when hot spots are random with hand work might be harder to replicate.?. I (if I were a pickup maker) would want to eliminate variables to create a consistent and controlled result. YMMV