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How to drill out a broken tap, drill out a broken screw extractor In this video I drill out a broken tap using a JCB diamondtech holesaw. Drilling out a broken tap or drilling out a broken screw extractor is often very difficult and most people would get the broken tap or broken screw extractor spark eroded. There are not many drill bits that will drill HSS taps or screw extractors as they are harder than most drill bits, but the JCB Diamondtech holesaws slowly remove the hard steel. The Diamond Tech holesaw cost from Toolstation (Im not on commission) Some more videos that might be of interest are How to remove a broken bolt which is deep in a hole How to make the bolt drill guide can be seen here How to remove a rounded Allen head bolt How to remove a stripped screw How to remove a broken bolt How to remove a rounded nut or bolt Screw extractors, Easyouts Removing a broken bolt using a welder Remove a broken bolt using a left handed drill bit