# Can't get chamfer on complex surface

**URL:** <https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487>\
**Category:** Modeling Questions\
**Created:** [February 17, 2022, 4:26pm UTC](https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487 "2022-02-17T16:26:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MadeInBologna](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/madeinbologna/32/13429_2.png) [@MadeInBologna](https://discourse.shapr3d.com/u/MadeInBologna)\
**Post date:** [February 17, 2022, 4:26pm UTC](https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487/1 "2022-02-17T16:26:35Z")

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I’ve tried several techniques, but I’m sure it’s inexperience here.

The last thing I tried was taking the 2D drawing and extruding it. Then I try to round over the top like it is on my car with a chamfer, and it tells me “the edge has no blend.” (Try telling that to U2.)

Any suggestions?

 ![2022-02-17_11-15-16](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/2/201fc8eab9b2e7a14c7cc158d70cfd1206249c57.jpeg)

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [February 17, 2022, 6:24pm UTC](https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487/2 "2022-02-17T18:24:51Z")

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Hi,

The problematic parts are usually these:

![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7bbeb5dea1887644076d4c5f5ef4fe9e957e8a2c.jpeg)

![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/7064e468882b5f818859148d7071dbcc6a536ee5.jpeg)

In these cases it might not be possible to generate a blend without the body self intersecting, therefore it fails.

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**Author:** ![Xiamen0592](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xiamen0592/32/12386_2.png) [@Xiamen0592](https://discourse.shapr3d.com/u/Xiamen0592)\
**Post date:** [February 18, 2022, 2:46am UTC](https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487/3 "2022-02-18T02:46:47Z")

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The problem of chamfering failure often occurs.Is it possible to introduce a function similar to the smooth model?

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**Author:** ![PEC](https://avatars.discourse-cdn.com/v4/letter/p/67e7ee/32.png) [@PEC](https://discourse.shapr3d.com/u/PEC)\
**Post date:** [February 18, 2022, 5:58pm UTC](https://discourse.shapr3d.com/t/cant-get-chamfer-on-complex-surface/17487/4 "2022-02-18T17:58:25Z")

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Hi

I would suggest to create a fillet instead of a chamfer -it is more tolerant to geometry- and then tune the shape of the fillet to be as close as possible to a chamfer (ensure the slider stays blue, not red)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b806fccfd1d81c435a2e3e0a1fbe5e0543c6c69f.jpeg)