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I just use a plain knife tool - with a cutting edge square to the spindle centreline, a plan trail angle of about 20 degrees and a point radius of about 20 thou/ half a mm. Leftmost tool in the pic. If I m roughing, I might angle the toolpost to give a plan approach angle of 10 degrees or so, but as an amateur machinist I m not often in enough of a hurry to do that. If I m finishing, I quite often cock the toolpost over so as to almost eliminate the plan trail angle, and use the trailing edge of the tool almost as a shaving face - small depth of cut, low speed, bit of lube, variable feed depending on results. ....