JBWeld on brass?

[davepl]

It's actually SteelStik, but same idea. In this case its a two-part putty you combine and it hardens to some weird machinable metal.

Anyway, I apparently have a pinhole leak on the neck of my brand new LMC radiator, which is probably our of warranty since it's been more than a year anyway. That's the problem with long builds...

So I used some of the putty, but when removing the paint it reminded me that I was working with brass. Anyone know if I should expect it to work and hold?

Thanks,
Dave