# Blending Multiple surfaces

**URL:** <https://discourse.mcneel.com/t/blending-multiple-surfaces/119015>\
**Category:** Rhino for Windows\
**Tags:** windows\
**Created:** [February 22, 2021, 11:39am UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015 "2021-02-22T11:39:29Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![tiwarisatish359](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/tiwarisatish359/32/366643_2.png) [@tiwarisatish359](https://discourse.mcneel.com/u/tiwarisatish359)\
**Post date:** [February 22, 2021, 11:39am UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/1 "2021-02-22T11:39:29Z")

</div>

I need to blend three surfaces together and since there are all not planar i am having some difficulties doing this.Can someone suggest an easy way [1.3dm](https://discourse.mcneel.com/uploads/short-url/b8Avb0AEpbTS4OnXkobGR9YVSSY.3dm) (91.6 KB)

 ![Screenshot 2021-02-22 171850](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/a/c/9/ac9aa14a7c4e67078f19b25bfa7f917ce19b6287.png) to do this?

---

<div class="post-metadata">

**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:** [February 22, 2021, 12:20pm UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/2 "2021-02-22T12:20:17Z")

</div>

i am having difficulties understanding how you intend to blend.

edit: so i went ahead and cheekily guessed even though it does not make sense since you either have to trim one side of the window like shapes and decide which side to blend or you give that middle surface a thickness that blending to both sides makes sense. and also what happens at each ending of the vertical surface, a lot of design questions here making this rather impossible to answer to your needs.

anyway if you use `FilletSrf` with a low radius you can blend left and right. obviously you could blend the left part with a wider blend, just be aware that blending naturally only works as long as the radius does not exceed the surface.

 ![Bildschirmfoto 2021-02-22 um 13.38.21](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/a/0/a/a0a0fb6a317762f66cf75830dac00f67f3f984af.png)

---

<div class="post-metadata">

**Author:** ![tiwarisatish359](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/tiwarisatish359/32/366643_2.png) [@tiwarisatish359](https://discourse.mcneel.com/u/tiwarisatish359)\
**Post date:** [February 22, 2021, 12:45pm UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/3 "2021-02-22T12:45:34Z")

</div>

![Screenshot 2021-02-22 171850_LI](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/4/1/b/41ba2b5d822ea358ecbe94987c7ac219168bb296.jpeg) I want to blend the edges of those surfaces together. Since thery are all curved, it has to be done by working some way around other commands.

---

<div class="post-metadata">

**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:** [February 22, 2021, 12:50pm UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/4 "2021-02-22T12:50:38Z")

</div>

sorry, but i still dont get your intentions. i know just as much as before 🙂  
maybe its my tooth which is killing me today, could you make a complete sketch?

---

<div class="post-metadata">

**Author:** ![tiwarisatish359](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/tiwarisatish359/32/366643_2.png) [@tiwarisatish359](https://discourse.mcneel.com/u/tiwarisatish359)\
**Post date:** [February 24, 2021, 5:22am UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/5 "2021-02-24T05:22:49Z")

</div>

![Screenshot 2021-02-24 110454](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/c/3/2/c323df5f00a86de1a5146aa28633c3904926fb7b.png)  
Sorry for the late reply. I tried but i dont if this will do any better 😅.(Hope this does). I want to create a surface between the edges highlited in red. I tried showing the seams using the blue lines 😅. Hope your doing fine !

---

<div class="post-metadata">

**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:** [February 24, 2021, 6:28am UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/6 "2021-02-24T06:28:32Z")

</div>

ok now we are getting somewhere, when you fill in the missing curves marked orange, you will find that `Patch` might give you an adequate beginning.

 ![Bildschirmfoto 2021-02-24 um 07.26.47](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/3/a/3/3a3cfa402e05aa6c175e8375a9a30b132b198b18.png)

---

<div class="post-metadata">

**Author:** ![tiwarisatish359](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/tiwarisatish359/32/366643_2.png) [@tiwarisatish359](https://discourse.mcneel.com/u/tiwarisatish359)\
**Post date:** [February 24, 2021, 6:47am UTC](https://discourse.mcneel.com/t/blending-multiple-surfaces/119015/7 "2021-02-24T06:47:42Z")

</div>

That worked like a charm!!! Thanks alot 🙌