Techniques for milling an accurate slide pocket in A2 tool steel hardened to 60 HRc (Rockwell). Relieved cutters with a corner radius are key to success, as well as high accuracy end mills made to a close tolerance. Avoid trapping the tool in corners, and mill a radius bigger than the cutting tool. Relieving the corners can further help. Recorded on a Makino F5 vertical machining center with OSG c…
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