Broken Tap Removal -- something different

[kaiser715]

(Putting this under general instead of tech, because I figure it'll garner some interesting comments...)

http://www.chemical-supermarket.com/Tap-X-Broken-Tap-Removal-Kit-p574.html

Is it or ???

 

[RatLabGuy]

"Do not use on substrates of high-carbon tool steels, Chrome-Moly 4130
or 4140, cast iron, brass, bronze, copper alloys or zinc."

... you mean, all the things that are commonly hard enough to have a tap broken in them....

 

[Blaze]

So if you break off your drill or tap in paper, wood, or cheddar cheese you are good to go.