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3D Printing with RepRap Cookbook by Richard Salinas

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Appendix B. Taking a Closer Look at G-code

G-code is a numerical control programming language. It's a set of instructions used as a means of controlling automated machines. In this case, it will instruct your 3D printer how to move and how much filament to extrude. It's unlikely that you'll need to examine the G-code that is generated by your slicer. However, knowing a handful of G-code commands can be useful at the command window of your host.

Generating G-code

G-code is generated by your slicer. The slicer is a program that takes the file of your 3D model and slices it up into many layers. A model created for 3D printing is constructed by a contiguous surface of triangles. This forms the entire skin of your model, without any gaps or overlapping. ...

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