Rejected Shapeways Models

These are some of the errors that occurred when trying to send my file to shape ways 

Error 1: The material that I had picked for 3D printing had a minimum thickness of 0.8mm, however as seen here, their model checking program has found that the model I sent had a large number of areas where the thickness was 0.48mm's.  This error was easily and rapidly (took a minute) rectified however thanks to the parametric nature of these models. 

Error 2: This error was generated as the new model I sent in had faces that were seen as 'reversed'. When a 3D printer undertakes a print, it analyses a model and checks what surfaces are exterior surfaces and which are internal surfaces. For this error, it is highlighted that there are some internal defined faces facing outside.

  

To rectify this error I downloaded two programs called MeshLab and NetFab. MeshLab allows for the conversion of a number of different 3D model formats into the industry standard .STL file format. This file format was then sent to NetFab, a 3D model checker that automatically runs tests and fixes them in preparation for 3D printing and rapid prototyping. 

MeshLab

NetFab