OKIt started as a very simple job to remove the screws from the door latch assemblys in the door jams. As it turns out the < Phillips head screws were installed with a thread locking compound. I had to drill through the center of the screw and remove them with a screw extractor.
While doing the last one, the extractor broke flush in the hole. Now, I have to drill out the extractor, which is extremely hardened steel. I do not have a bit (in my tool box) that will begin to cut through this material.
Would greatly appreciate any suggestions.
The easiest way to get that out is by spark-erosion - a specialised manufacturing technique using specialist equipment. There are Spark Eroders on many industrial estates now, and you should be able to find one in your local Yellow Pages, probably under "Sub-Contract Engineering". Spark Erosion is also known as "Electro-Discharge Machining" or "EDM".
ATB -- Mike Ellie - 1963 White Herald 1200 Convertible GA125624 CV Connie - 1968 Conifer Herald 1200 Saloon GA237511 DL Carly - 1977 Inca Yellow Spitfire 1500 FH105671
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