Curious on how to approach something like this on CNC?

How To
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How a part once designed is machined is a topic which runs up against:

  • stock size and machine working area — certain orientations may not be possible due to Z-axis limitations
  • workholding — how will the stock be clamped/secured?
  • will a fixture be needed for one or more additional operations?
  • tabs/sprues — will it be necessary to add tabs/sprues if a fixture alone is not sufficient?

For an example of one approach to this sort of thing see:

Note that there are entire books written on jigs and fixtures:

The search term you want is “Design for Manufacturing”.

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