# Modeling Molded door trim piece using Loft and Sweep

**URL:** <https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210>\
**Category:** Modeling Questions\
**Created:** [March 25, 2025, 4:19am UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210 "2025-03-25T04:19:52Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![alexM](https://avatars.discourse-cdn.com/v4/letter/a/3da27b/32.png) [@alexM](https://discourse.shapr3d.com/u/alexM)\
**Post date:** [March 25, 2025, 4:19am UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210/1 "2025-03-25T04:19:53Z")

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I’m attempting to model a molded, plastic door trim piece from a Toyota Tundra. I have created a sketch outline of the part, and extrusions for the one end of the piece, and for the sides. But I am having trouble creating the smooth transition from the end to the sides around curved 90 degree corners. The profile of the end extrusion is different from the side extrusion, and I want to blend them together smoothly around the corners. I tried using Loft around the curve to the side profile sketch, but I keep getting errors about it not being a valid operation. Appreciate any ideas!

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/c/4/c4acde471d365f25dce674bba1bdb4a6b849f209.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/5/e/5e6ebedc10e248beddc4292db4134aad94cce3af.jpeg)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/0/c/0c630e187d676f0710f5ce3b8cf32617b9dc9b78.jpeg)

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [March 25, 2025, 5:06am UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210/2 "2025-03-25T05:06:31Z")

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FWIW, here’s one approach using extrusion exclusively. I eyeballed your trim piece and made the initial extrusion with 5° draft. The one area not per your piece is the left hand side at the opening. The width of that part looks fine however the top profile does not match. With a little more work I believe that peak feature can be done. Other’s will offer a doable solution. Good luck.

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [March 25, 2025, 6:01am UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210/3 "2025-03-25T06:01:43Z")

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Also getting one of these contour gauge would be useful.

You could use it to build your loft profile, for your purpose the metal one has higher accuracy.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/5/b/5b0c5c2639b9dd86d13e1687a6596c8c8ff8ab7f.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/6/c/6c541c726b3713d7cff4ea3f612a36016e4ea6cf.jpeg)

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**Author:** ![alexM](https://avatars.discourse-cdn.com/v4/letter/a/3da27b/32.png) [@alexM](https://discourse.shapr3d.com/u/alexM)\
**Post date:** [March 25, 2025, 9:11pm UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210/4 "2025-03-25T21:11:24Z")

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@TigerMike - Thanks for putting that together. It looks pretty straightforward the way you did it. I may have been overcomplicating it. Maybe best to start simple and then tweak the design later. I couldn’t see the commands you used in the video, but I will try to use some of your ideas.

-alex

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<div class="post-metadata">

**Author:** ![alexM](https://avatars.discourse-cdn.com/v4/letter/a/3da27b/32.png) [@alexM](https://discourse.shapr3d.com/u/alexM)\
**Post date:** [March 25, 2025, 9:15pm UTC](https://discourse.shapr3d.com/t/modeling-molded-door-trim-piece-using-loft-and-sweep/37210/5 "2025-03-25T21:15:36Z")

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@SCALEMODEL - I’ve been thinking about getting one of those gauges - it would help to get measurements in some tricky situations. Your puppy seems to be a cooperative test subject!