Repair STL with MeshMixer. A Good method I think.
Sometimes STL files may not be in the best condition to 3D Print...
Here is a simple MeshMixer Fix to repair STL files.
I have not tried this with all STL files, so I cannot say if it will always work.
MeshMixer has a number of other options to try to fix STL files, these are not shown in this video..
Netfabb Basic is now just Netfabb
https://www.netfabb.com/blog/netfabb-...
Netfabb Online Service - check and repair your STL files
https://service.netfabb.com
MeshMixer, from Autodesk free
http://www.meshmixer.com
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