http://www.shapeways.com/forum/index.php Shapeways: Bring your creativity to life in 3D http://www.shapeways.com/forum/index.php?t=rview&goto=10285&th=2099#msg_10285
It's a little embarrassing, since these are simple models and I consider myself to be a relatively clean modeler. Could you help please?

Knowing my luck, it'll have been something really silly and obvious that I missed...]]> Charmed_Life_Designs 2010-02-28T02:44:28-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=10286&th=2099#msg_10286
As you say, your model (note.x3d) checked as manifold in Meshlab. In Blender, it wasn't manifold after the removal of duplicate vertices (with the limit set to zero). (I wasn't able to open the X3D file in Blender, but I saved it from Meshlab as a PLY file and imported it into Blender as that.) Meshlab seems to be more precise than Blender or Shapeways in identifying different vertex positions, especially with very small numbers.
]]> GHP 2010-02-28T08:19:38-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=10290&th=2099#msg_10290 meshlab and blender can´t find anything wrong with them also.
i also tried to upload an older model, with similar properties wich has worked fine before, but now it won´t.

I have sent email to shapeways about it.
hopeully the problem is going to be solved soon.]]> Eeppium 2010-02-28T11:11:38-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=10293&th=2099#msg_10293 your model has a lot of very thin triangles which can cause errors while converting into another format, like GHP already said.

I checked and repaired your files, see the attachment, and also
http://www.shapeways.com/forum/index.php?t=msg&goto=1009 8#msg_10098

Bye,
Alex]]> aoster 2010-02-28T16:49:31-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=10300&th=2099#msg_10300 ]]> Charmed_Life_Designs 2010-02-28T19:01:07-00:00