I am trying to prepare the model I made for a school project for conversion to an .stl file and 3d printing and had a couple questions about doing this without using another 3d modelling app.
Primarily, I am wondering if there is a way to test the “watertightness” of a mesh in Blender, to make sure that it will not encounter errors.
Also, to make sure that I have solid object I am assuming that all I really need to do is use meshes and check the directions of the normals on the faces.
P.S. any other 3d printing tips are highly appreciated!