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## Helical Sweep Issue with Accuracy Problem

I am trying to create a groove in a roll that I am modeling and I am having issues where the groove is so small that the helical sweep wouldn't regenerate. So, I changed the accuracy of the part to absolute and .0001. The helical sweep will now regenerate, but it takes forever and I can't get the drawing for the assembly this part is in to open. Any suggestions?

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## Re: Helical Sweep Issue with Accuracy Problem

Three options spring to mind:

1. Model the sweep for a small portion of the cylinder and make a note that it should extend the length, then create a detailed view of the that end of the cylinder showing the details of the groove.
2. Fake the helical part. Just model it as a revolved cut. Should be much faster to regenerate. Then create the detailed view.
3. Model the sweep as surfaces and then use them to make a solid cut. Should also regenerate faster. Still go with a high magnification detailed view to display the details of the groove.

I would not suggest trying to sketch it in the drawing, that is just asking for trouble.

-marc

5 REPLIES 5
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## Re: Helical Sweep Issue with Accuracy Problem

Yeah, don't model the sweep.

Instead just create a sketch the shows the sweep profile and show this sketch on the drawing in a detail view.

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## Re: Helical Sweep Issue with Accuracy Problem

The problem is that the profile of the groove is so small that its not showing up in the drawing after I sketch it in the model. I might just have to sketch it in the drawing for it to work correctly.

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## Re: Helical Sweep Issue with Accuracy Problem

With a detailed view you can set the scale completely different from the other views and really "zoom in".

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## Re: Helical Sweep Issue with Accuracy Problem

Three options spring to mind:

1. Model the sweep for a small portion of the cylinder and make a note that it should extend the length, then create a detailed view of the that end of the cylinder showing the details of the groove.
2. Fake the helical part. Just model it as a revolved cut. Should be much faster to regenerate. Then create the detailed view.
3. Model the sweep as surfaces and then use them to make a solid cut. Should also regenerate faster. Still go with a high magnification detailed view to display the details of the groove.

I would not suggest trying to sketch it in the drawing, that is just asking for trouble.

-marc