SimplifyMeshBlackBox

This is what we want to achieve by simplifying the mesh.  It take a STL file in input, take the biggest heap of triangles, smooth it and decimate it.

What you need

• A STL file
• Python + VTK (it's very convinient to use the package they have on their website: http://www.vtk.org/files/release/5.8/tmp/ (linux, windows and mac version are available)
• The SimplifyMeshBlackBox script. you can dowload it from here  
• Netfab (or another STL viewer)

How to use it 

• Unzip the scripts in a folder on your local disk
• start a command prompt in that folder
• Type simplifyMesh [PathToYourSTL].
• You have a smooth and deiimated model.

Troubleshooting... Tips and tricks

• You'll probably have to update the paths in the bat file. 
• You can create a shortcut to the bat file. That way, you can drag'n'drop STL file on it to start the decimation process.