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# Ultimaker 2 Lab Guide:
# Ultimaker 2 Lab Guide:
### Help!
### Help!
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@@ -92,4 +94,4 @@ The print must fit in a 20x20x20cm cube. It is best to lay the model flat vs to
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@@ -92,4 +94,4 @@ The print must fit in a 20x20x20cm cube. It is best to lay the model flat vs to
## student questions:
## student questions:
***stl data format , triangular vs quad meshes???**
***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 right-hand rule) of the triangles using a three-dimensional 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 right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. STL coordinates must be positive numbers, there is no scale information, and the units are arbitrary."