Originally Posted by
merziac
Anyone ever try to have one Tigged?
I think it's not wise, but unlike many welders, I will tell you why. The alloys may be different between the crank arm and the spider, and either or both might be "not weldable" alloys. You _could_ weld them, but they wouldn't have much strength due to the way the metal grain precipitates after welding. I'm guessing a crack would start somewhere.
If I ever have access to tig equipment again, I'm happy to try!!