[PSUBS-MAILIST] machining

[hank pronk via Personal_Submersibles]

Hi All,Looking for an old timer trick to soften a shaft without warping it.  I am on my second try and it is good but not perfect.  I had to soften the ends of a 20mm shaft so I could drill one end and make a keyway on the other end.  I heated the ends slowly until they just turned orange and let sit to cool.  I did one end at a time.  Any tricks to this?Hank
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