boring head rpm

  1. B

    Just Did First Boring Head Cuts

    Wow !!! ............. What an amazing bit of gear. Whizzed through a cast iron internal 1" bored hole much faster and better finish than my little 9" lathe does . Just found this book below where it says make it 1/3 to 1/4 speed for a drill bit, is that right ? Means I was spinning way way...
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