Re: headstock stock run out?

ken campbell

remember to allow for the bending away from your cutting tool the work piece ... a general rule is that stock should not be unsupported more than 2 to 3 diameters from the chuck . the result of the vector of the cutting force is that the outboard end is larger bends away from the cutter more.

either support the outboard end, or cut at a remedial angle ... according to the tolerance you need . even threading with many passes can show tapered threads ....

wider tolerances can be our friend .... but still unplanned tapered cuts leave us a little depressed .....we know they are there .

so include in your testing kit some known straight ground shafts to sweep when " chucked " .


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