Broken tap troubles?

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What is a blue tip wrench?

Bob

AKA oxyacetylene cutting torch .

Die grinder (air or electric) and a carbide burr. Even a dremel would work. If you damage the threads accidentally you can always helicoil.

Try laying a nut over the broken tap/bolt and TIG weld thru the center of the nut to the broken bolt or tap with filler rod. Then just unscrew the nut and bolt together. I have had great success with this method, especially on cast iron parts. The localized heat from the tig really seems to help break the bond between the bolt/tap and the work. The iron is protected from damage from the arc by the nut. Just did two Audi Quattro iron spindle bearing hubs this way. They had 250K miles of use in the salt belt, and the bolt head were rusted round. Pulled 6 bolts in total with no damage to either hub or the backing plates they were holding.

Thanks! - Very clever!

Also known as a Fire Axe

Folks? Other common names?

Gunner

"If I'm going to reach out to the the Democrats then I need a third hand.There's no way I'm letting go of my wallet or my gun while they're around."

"Democrat. In the dictionary it's right after demobilize and right before demode` (out of fashion).

-Buddy Jordan 2001

HEAT WRENCH

Do you use a nut with a hole smaller than the tap diameter to avoid welding the tap to the piece it's stuck into? Randy

Gas Grinder

Gas axe

Mark Rand RTFM

I've done it best by welding a washer first then the nut. Washer hole slightly smaller than targeted stub. Then weld the nut to washer often run the bead on the outside of the nut.. There is some special rod for those who encounter this frequently. The first time I tried this it save many hours and $$$.

ED