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BestMastercam

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Posts posted by BestMastercam

  1. Well think about it. There is an anlge on that thread and if you are cutting straight up you are in reality you are cutting a straight thread that just happedns to have taper on the outside of the tool. You do not see the error as much becuase of the taper on the tool ,but what ever you would do with a single point tool to cut a thread is the same way you would cut with a multi-flute tool. 23 years ago we dod not have all the options we have today. To cut threads with a tool like this where I cam from was crazy to even think about, much less do. I puy my job on the line at one company. They had hard face welded some housings. The threads in the housings got messed up and could not be fixed with a tap. The Power Company they were for sent out all types of engineers and they were going to scrap 30 housings at $300k each. I walked over in my early 20's and told them to threadmill them and they will be fine. Everyone includeing the owners and shop foreman called me crazy. I told them I knew it would work I had been doing it for years. Owner was a 30 year conventional machinist and said it could not be done. I told him if it would not work I would quit. The engineers laughed at me and told the owenrs unless that had $3.6 Million to replace them they might need ot listen to me. I went and borrow the tool from a company I use to work with and we cut all 30 with one tool. I got to keep my job and they got the parts out and the city was not going without be hurting for power for 6 weeks since that was how long it was going to replace the housings.

     

    Get away from the mutli-flute tool and go back to basics and think about a single point tool. That along should should show anyone cutting taper threads without taper is just asking for trouble.

     

    100% agree with you. :thumbup:

  2. INCORRECT!

     

    The surface normal vector, often simply called the "normal," is a vector perpendicular to a given point on the surface.

    Surface normals exist on both sides of a surface face.

     

    Mastercam simply wants you to determine which side of the surface you are working with.

     

    :thumbsup:

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