Simplify3D User Forum

Hi, guys !

I am trying to print a mold with single vertical cut of one polygon  width, but manifold processing don't allow me to do it correctly. Different setting leads to non-desired results: some polys are disappear when "Discard" option is set or new unwanted polys appear when "Heal" is selected.

Could you please help me to prepare this print correct way ?

BTW: Can not figure out why this surface is detected as "non-manifold" ? All normals are pointing to the same direction if we will "unfold" the model.

Thanks in advance.

You can only 3d print something that is manifold. Simply put, Manifold objects are objects that can exist in real life.

What you are trying to print is a non-manifold..its not something that can exist in real life as an object. Make it manifold is my advice.

Thank you for reply, but I still don't understand why this object can't exist. Take plastic bottle, cut off top and bottom, make vertical cut and you will get desired object.

But it seams to me I found solution: giving the thikness to the walls.