Watertight 3d Model. Stl obj mtl abc dae and more. If you want to simply scan and print you should output a fully enclosed stl model since single surface will not be able to be processed and printed out.
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So no holes no internal faces. From the icon of those two choices you can tell that the watertight model is intended for 3d printing and unwatertight model is more for future editing. For most cases this is true.
My 3d creations are a blend of cad and 3d scans.
Stl obj fbx mtl ztl and more. Air tight and water tight containers such as cups canisters or tanks can now be 3d printed using standard filament 3d printers. My models are character portraits as well as useful household and toy items for adults and kids alike. My 3d creations are a blend of cad and 3d scans.
