I was trying to drill out a busted driveshaft spline in a New Holland 617 disc mower gearbox. I chewed up 3 "standard carbide masonary bits" because they are so hard that the vibration and heat destroy the inserts. I then went to Ace Hardware of all places and they sold me a softer carbide bit which was made specially for drilling hardened steel. It worked great until I snapped it off. I then learned I could press out the busted piece which of course meant all the drilling was a waste of time. Check and see if you can buy the special carbide bit for drilling steel. If all else fails, take a punch and break the dang thing up into little pieces and then drill and tap the resulting mangled hole to the next bigger size and be done with it. John
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for �200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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