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# Ultimaker 2 Lab Guide:






### Help!

...  ...  @@ 92,4 +94,4 @@ The print must fit in a 20x20x20cm cube. It is best to lay the model flat vs to 





## student questions:



* **stl data format , triangular vs quad meshes???**



* STL: "An STL file describes a raw unstructured triangulated surface by the unit normal and vertices (ordered by the righthand rule) of the triangles using a threedimensional Cartesian coordinate system. STL coordinates must be positive numbers, there is no scale information, and the units are arbitrary." 


* STL: "An STL file describes a raw unstructured triangulated surface by the unit normal and vertices (ordered by the righthand rule) of the triangles using a threedimensional Cartesian coordinate system. STL coordinates must be positive numbers, there is no scale information, and the units are arbitrary." 


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