Met History wrote:

> Is there a better way to undo welded white metal than just using an
> iron mallet?

Use a metal grinder. Wear goggles & leather gloves.
Don't set yourself on fire.

--
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uncoffee-ed, or to change your settings, go to:
<http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>