Preferences - Import/Export Tab
Orient imported parts for the fastest print times: Checked by default. Orients a part with the smallest dimension printing in the Z-axis for the fastest print times. Uncheck this option if you do not want 3DPrint to automatically orient the part.
Invert imported part vertically if the top half is heavier than the bottom one: Checked by default. Orients a part so that the heavier half is at the bottom of the build bed. Printing the part with the lighter side towards the top prevents the weight of the heavier half from damaging the part during powder removal.
Mesh resolution for VRML primitives: The default setting is 20. Set the number higher to increase the number of facets and make your file larger. Set a lower number to reduce the facets.
Compress Textures in .zbd files (slows down save/ load): Checked by default. Saves texture maps with compression. Compress texture maps if you have limited computer resources. The trade-off is compressed files take longer to open and save.
Refine texture when export to .PLY: Unchecked by default. Applies to .wrl texture map files and increases the number of facets by four times in texture mapped parts, which significantly increases the fidelity of the rendering. The export option is for exporting a .PLY file into thirdparty software for manipulation, if needed.
Thickness of base in “Make Solid” operation: Creates a solid base for surfaces that are rectangular. The height of the base is determined by the value entered in this field.
Rotate Elevation Grid: Checked by default. Orients the part in the XY plane. Most GIS VRML files contain an Elevation Grid where the main landscape plane is oriented parallel to the XZ plane (not the XY plane), meaning you have to manually rotate the model.
Compress textures in .zpr files: Check to save texture maps with compression. Compression saves computer resources, but compressed files take longer to open and save.
Save .zpr textures externally: Check if you want to save texture maps separately from a .zpr file. In most cases, the texture maps are saved as .png files.
Save .zpr Textures as .png files: Unchecked by default. When checked, saves .zpr texture maps as .png files, which do not loose detail when compressed and then uncompressed.
Saving .jpg Quality Factor (1-10): Relates to exporting .zpr files. On a scale of 1-10, 1 means no loss of quality, 10 is the greatest loss of quality.