Kasch
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Posts posted by Kasch
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I need to thread mill a 4"-8 NPT external thread on some pipe. What diameter do I need to use for the toolpath? Should it be the major diameter of 4.434" or 4.5" - the OD of the pipe? At 4.5" it looks like it would be to large. I have set the taper angle to 1.7833°, just not sure of the correct diameter to toolpath to get me close to size without putting a huge comp value in the control.
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I need to thread mill a 4"-8 NPT external thread on some pipe. What diameter do I need to use for the toolpath? Should it be the major diameter of 4.434" or 4.5" - the OD of the pipe? At 4.5" it looks like it would be to large. I have set the taper angle to 1.7833°, just not sure of the correct diameter to toolpath to get me close to size without putting a huge comp value in the control.
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I need to thread mill a 4"-8 NPT external thread. What diameter should I be using for the toolpath? Should it be the major diameter of 4.434" or 4.5" - the OD of the pipe? Done plenty of thread milling but not an external NPT yet. I have the taper angle set at 1.7833°, just not sure of the correct diameter to toolpath to get me real close without putting a huge comp value in the control.
NPT external thread milling question
in Industrial Forum
Posted
So use the minor diameter of the small end of the thread or the minor diameter of the large end?