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Non-manifold/Inverted normals check program for Mac [message #8358] Wed, 16 December 2009 22:54 UTC Go to next message
avatar dblejeune  is currently offline dblejeune
Messages: 1
Registered: December 2009
Go to all my models
Junior Member
Hey guys, I'm just getting started in this whole thing, so of course I've gotten the dreaded non-manifold errors. However, Shapeways' online visualizer isn't displaying my model. I'm using Cinema 4D on my Mac to create my models, and wasn't able to find anything in the help about error checking models, so I'm wondering if there is any small stand alone progam to do this on OSX. If there is nothing of the sort I suppose I'll just go ahead and get Blender.
Also, does anyone know of a good resource on non-manifold and inverted normals, what causes them, how to fix/avoid them, etc. I've been searching the web and other than what's here, I haven't found anything very comprehensive. I really just want to get a better overall understanding of what's going on. Thanks!
Re: Non-manifold/Inverted normals check program for Mac [message #8380 is a reply to message #8358 ] Thu, 17 December 2009 18:54 UTC Go to previous messageGo to next message
avatar BillBedford  is currently offline BillBedford
Messages: 346
Registered: November 2008
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Senior Member
There's 'topscope . Works well but it's 95 quid


Bill Bedford
Re: Non-manifold/Inverted normals check program for Mac [message #8690 is a reply to message #8358 ] Sun, 03 January 2010 01:04 UTC Go to previous message
avatar afrodri  is currently offline afrodri
Messages: 63
Registered: July 2009
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Member
dblejeune wrote on Wed, 16 December 2009 22:54

Hey guys, I'm just getting started in this whole thing, so of course I've gotten the dreaded non-manifold errors. However, Shapeways' online visualizer isn't displaying my model. I'm using Cinema 4D on my Mac to create my models, and wasn't able to find anything in the help about error checking models, so I'm wondering if there is any small stand alone progam to do this on OSX. If there is nothing of the sort I suppose I'll just go ahead and get Blender.
Also, does anyone know of a good resource on non-manifold and inverted normals, what causes them, how to fix/avoid them, etc. I've been searching the web and other than what's here, I haven't found anything very comprehensive. I really just want to get a better overall understanding of what's going on. Thanks!


Meshlab has a version for Mac OS, though I find Blender easier to use. Also, if you have VMWare, there is a free version of the Magics STL viewer which catches most errors.

As for the causes, I've found that doing booleans on a mesh will often cause it to become non-manifold, and extrusions often cause normal problems.

 
   
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