[RICK LAKE]

Baz Snap-on or a real good tool maker should have a set of extractors for broken taps. It's a tool with 4 thin tool steel pins that go down between each flute on the tap. With a lite hand they will get out about 90% of the taps. Once you start the hammer and chisle deal, this will not work. Did you bottom out the tap? It takes alot to break one, even cheap ones. Heating them is another no-no. Take it to a machine shop and let them repair the hole Rick.