3d printer, and stl questions

Hi,

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.

I’ve searched the forum already and came up with these two related posts(1,2) which helped a lot but didn’t quite answer my questions.

thanks!

-Ben

P.S. any other 3d printing tips are highly appreciated!

To make sure your mesh is a completely closed figure, go into edit mode, hit the spacebar, select --> non manifold. If nothing is selected, you’re ok. Any open edges will be selected.

thanks, that’s exactly the kind of thing I was looking for!