Drilling it out has only one real important component. Getting the hole centered. If it is not centered all other options become way more difficult. Use the chamfer on the casting, or factor in the twisted off helical thread into locating the drill hole (complicated with weld and slag!) If the hole is intended to be symmetrical with other holes measure and be sure of the drill location. A diamond bit in a dremel can do wonders to get at fresh bolt and centered in the threads. Even if it ruins the existing threads using a Thread Cert insert (not Helicoil) will make it new. Jim
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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