SB Mill #30 taper dimensions

kubes

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Nov 1, 2022
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All,
I recently purchased a South Bend Mill, but it has no tooling. I know #30 taper (BT or NMTB) will work; just need to mill the pockets for the set screws. I have seen the YouTube video from Somers Metal Works and others, but they don't have the details dimensions of the pocket. I don't have any tooling to copy to measure and am hoping someone with this machine can help out with it.
  1. What is the distance from the shoulder to the tangent on the face to the top of the pocket (the orange dimension)?
  2. What is the depth of the pocket? (violet)
  3. What is the diameter of the pocket, or better, the diameter of the cutter? (I believe it is 7/16") (green)
Thanks!!!!!!!

Taper.png
 
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