# Twisting an internal profile in a swept object

**URL:** <https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859>\
**Category:** Modeling Questions\
**Created:** [December 16, 2017, 9:21pm UTC](https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859 "2017-12-16T21:21:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Tanker](https://avatars.discourse-cdn.com/v4/letter/t/f17d59/32.png) [@Tanker](https://discourse.shapr3d.com/u/Tanker)\
**Post date:** [December 16, 2017, 9:21pm UTC](https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859/1 "2017-12-16T21:21:04Z")

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Trying to sweep a rectangular profile. The internal shape is also rectangular, like a pipe. I want to twist the inside rectangle 90 degrees, so the entry end is horizontal but at the exit end the internal rectangle is vertical. I am trying to push an object through the internal profile so that it turns the object through 90 degrees at the exit. Can this be done?

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [December 16, 2017, 9:27pm UTC](https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859/2 "2017-12-16T21:27:58Z")

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Currently with the sweep you can’t do that, there is no option for twisted sweeps, I would go with a loft in this case (but I don’t know the exact use-case of course).

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**Author:** ![Tanker](https://avatars.discourse-cdn.com/v4/letter/t/f17d59/32.png) [@Tanker](https://discourse.shapr3d.com/u/Tanker)\
**Post date:** [December 16, 2017, 11:09pm UTC](https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859/3 "2017-12-16T23:09:39Z")

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Hi Istvan,  
So I can loft along a swept 2d path, sweep the external rectangle and then subtract the inner lofted profile from the external sweep??

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [December 16, 2017, 11:23pm UTC](https://discourse.shapr3d.com/t/twisting-an-internal-profile-in-a-swept-object/1859/4 "2017-12-16T23:23:12Z")

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Yes, exactly. You will have to define the profiles along the path, but you can do that easily with construction planes.