Here is the way how i get my model compatible for ShapeWays. Please check the FAQ and other pages on ShapeWays if you have questions that are not fit into this todo. here is the list:
- create your 3d model
- convert all curves to meshes and apply all modifiers
- join all parts of the model together into a single mesh
- check that the model do not have any floating parts if you do not want them
- check the model for “non manifold” parts (edit mode - deselect all -> select -> non manifold) => tutorial
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- unwrap the model
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- put the texture on the same directory level as the blend file
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- set the texture to the model
- enable units under scene -> units in Blender
- set the dimensions of your model with the help of the units (eg. 12cm)
- IMPORTANT: apply the scale to the model (ctrl-a -> scale)
- export to collada (*.dae)
- open the exported model with MeshLab (free)
- save the model without any modifications as VRML (*.wrl) file
- pack the VRML file and the texture (same directory level!) into a zip file and upload it to ShapeWays
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- -or- upload only the VRML file to ShapeWays
- check your email inbox for error / success messages
* = for colored print
i hope i could help!