# Joining complex mesh

**URL:** <https://discourse.mcneel.com/t/joining-complex-mesh/18222>\
**Category:** Rhino for Mac\
**Created:** [March 25, 2015, 4:44pm UTC](https://discourse.mcneel.com/t/joining-complex-mesh/18222 "2015-03-25T16:44:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cwreckord](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/cwreckord/32/647256_2.png) [@cwreckord](https://discourse.mcneel.com/u/cwreckord)\
**Post date:** [March 25, 2015, 4:44pm UTC](https://discourse.mcneel.com/t/joining-complex-mesh/18222/1 "2015-03-25T16:44:33Z")

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Hi there!  
I am still really new to Rhino, so I am sorry if this question seems really basic.  
I am trying to map topography onto jewelry, and I have had a lot of luck, but this time I am unsure of how to connect the basic ring shape and the topography. I was able to split the mesh but there are lots of holes, and I am not sure how to connect it all in order to make a water tight model. Thanks! [Topo Square ring.3dm.zip](https://sea3.discourse-cdn.com/mcneel/uploads/default/17908/51f197511dae1e3d.zip) (571.5 KB)

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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:** [March 25, 2015, 5:09pm UTC](https://discourse.mcneel.com/t/joining-complex-mesh/18222/2 "2015-03-25T17:09:49Z")

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Hi Courtney- that mesh is a bit of a mess- (Check command). You can spend some time cleaning up, and then DupBorder and see if you can split the ring mesh with that curve (SplitMeshWithCurve). Or, you could make a new Patch using the mesh as input- maybe 60 by 60 or more spans, and then use then to generate a clean new mesh with the Mesh command. It is a couple of steps removed, of course, from the original but maybe good enough? I’ll attach the mesh that I get. It is over sized because Patch makes extra surface around the input.

[NewMeshFromPatch.3dm](https://sea3.discourse-cdn.com/mcneel/uploads/default/17909/4495f695cbc7bef9.3dm) (1.0 MB)

-Pascal

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<div class="post-metadata">

**Author:** ![cwreckord](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/cwreckord/32/647256_2.png) [@cwreckord](https://discourse.mcneel.com/u/cwreckord)\
**Post date:** [March 26, 2015, 2:12am UTC](https://discourse.mcneel.com/t/joining-complex-mesh/18222/3 "2015-03-26T02:12:03Z")

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Thanks Pascal,  
I didn’t have time to look at it today but I wonder if you have any suggestions for tutorials for this kind of thing? I did the intro Rhino course on Lynda but beyond that I am having a hard time with finding info. Thanks!  
Courtney

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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:** [March 26, 2015, 2:47am UTC](https://discourse.mcneel.com/t/joining-complex-mesh/18222/4 "2015-03-26T02:47:17Z")

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Hi Courtney - nothing very specific to your problem comes to mind but looking through the Help file on all the mesh related commands (the Mesh menu \> Mesh edit tools, Mesh repair tools, might be useful in dealing with nasty meshes than need cleanup.

-Pascal