# Surface blend

**URL:** <https://discourse.mcneel.com/t/surface-blend/88328>\
**Category:** Rhino for Windows\
**Created:** [September 3, 2019, 10:16am UTC](https://discourse.mcneel.com/t/surface-blend/88328 "2019-09-03T10:16:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Rj1](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/rj1/32/148909_2.png) [@Rj1](https://discourse.mcneel.com/u/Rj1)\
**Post date:** [September 3, 2019, 10:16am UTC](https://discourse.mcneel.com/t/surface-blend/88328/1 "2019-09-03T10:16:12Z")

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Hi, I would like to join and blend these 4 surfaces in a smooth way, but I have tried command blend surface, match surface even patch command, I still cannot fix it. Any help please! The shape of surfaces at the end need to be remained, the surface at the middle can compromise a little bit. Please have a look at the rhino file, thanks!

 ![surface%20blend%20mark](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/1/9/19ae7b8c57e32227ba7d39b59304ca0a06a98b04.png)  
[surface blend.3dm](https://discourse.mcneel.com/uploads/short-url/cgvJQlD4wi1aCeMGRqfWMaLzWKd.3dm) (724.7 KB)

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**Author:** ![encephalon](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/encephalon/32/611970_2.png) [@encephalon](https://discourse.mcneel.com/u/encephalon)\
**Post date:** [September 3, 2019, 10:27am UTC](https://discourse.mcneel.com/t/surface-blend/88328/2 "2019-09-03T10:27:39Z")

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take a look at this position

 ![49](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/c/5/c5360b1946fca4f85200c1e39f6c54528430f1d4.png)

you created a surface that folds a bit back, very bad for getting good transitions.

![33](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/2/e/2e4839a8a68eb8af23f830f187fd947233322b31.png)

at the following position

 ![58](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/0/3/0335faacedec72ba3ebdd45db6857e3f538d3e51.png)

the corners are not touching.

![16](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/3/d/3d139c0f360a576960fd5aa7d04dbf90c1518b9a.png)

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [September 3, 2019, 2:55pm UTC](https://discourse.mcneel.com/t/surface-blend/88328/3 "2019-09-03T14:55:01Z")

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Hello - I’d look at making the three base surfaces all one surface.

-Pascal