Quality of the tap starts with sharp drill bit with hole drilled with a drill press and the work clamped fast to the drilled piece cant move then champer the hole so the tap can get a straight and easy start with tap lube rest is common sense in using pressure on the tap. Most taps are broken by using bad procedure. Dies need slight undersize rod with lube again and have a straight cut champfered some to start ALWAYS have the correct drill using chart. Some holes need a fractioal hole and some need a lettered and some even need a numbered drill to make the hole. Some hardened materials just arent good to use a die. Need to know what material you are using.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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