Just realized I've been grinding weld caps wrong for 15 years

Ngl, I always dressed my caps with a 4-1/2 grinder and a flapper disc, but this old timer at the union hall in Cleveland showed me a burr wheel trick that leaves a smoother finish in half the time. He said it's how they did it before angle grinders got cheap, and I tried it on a pressure vessel seam yesterday, night and day difference. Anyone else pick up an older method that just works better than what you were taught?

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nancyn6927d ago

That burr wheel trick is the real deal, I picked it up from an old pipefitter in Pittsburgh back in 08 and never looked back. The key is running it at a lower rpm than you think you need, around 6k, and let the wheel do the work instead of pushing hard. You get a finish that's almost like a brush finish, and it doesn't dig in on the root pass like a flapper can. Once you feel that smooth catch, going back to a grinder feels like you're fighting the metal the whole way.