Machining) to accurately arc-machine the hole for $200, or to buy differentġ/8-inch drill bits and try again myself (using each of the three drills usedĭidn’t have much to lose by trying different drill bits. Package the part and send it to a specialty shop for EDM (Electrical Discharge Shops and after hearing the story, no one wanted to touch it. That ‘dent’ measured approximately 0.010-inch deep. The end result (following severalĪttempts-all with more annealing) was a small dent in the hardened shift lever Next, he annealed it with a TIG welder.Ĭlamped into the vise of a Bridgeport mill. NothingĪnd quickly came to the conclusion that the steel was actually hardened (and
#SCREW INTO TILE MAC#
I tried to drill the hole with three different drills-aĬonventional 3/8-inch Makita variable-speed electric, a Mac Tools air-powered In the process, I tried pretty much everything Seem to be too big of a problem because I could anneal it after trimming it toĭrill a 1/8-inch hole in the linkage with a conventional high-speed drill bit. Remnants off and then drill a hole in what was left so that it could be safety-wiredĪ cut-off wheel) and grinding the linkage it would work harden. Three-on-the-tree assembly converted to a floor shift application with a newīowl, but parts of the shifter linkage remained. Hardened steel-in this case, the piece of steel was what was left of the lower What may seem on the surface like a simple dilemma: Talk about something that is seemingly simple-a specialty drill bit. Tools revolve around some more complicated, some might say exotic, items.
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