How to make a room bottom/floor solid?

[michielper]

Is there a way to make the bottom of a room/floor solid so that it becomes a solid (thin) shape when exported to .obj and to a 3D printing program? As it is now, the bottom/floor of a house is not printed at all when exported.

[Keet]

Did you give the level an elevation >0? I think you need a level with an elevation where the floor thickness is the resulting thickness of the exported room.

[michielper]

Did you give the level an elevation >0? I think you need a level with an elevation where the floor thickness is the resulting thickness of the exported room.

Yes, it turns out that non-ground-floors go well. The floor of the rooms are converted into solid objects with the thickness of the floor. Only with the ground floor this does not work. My solution is to create an extra lowest floor (call it bottom) with elevation 0. Then give the ground floor an elevation which is the same as its thickness. This seems to work!

[Keet]

Did you give the level an elevation >0? I think you need a level with an elevation where the floor thickness is the resulting thickness of the exported room.

Yes, it turns out that non-ground-floors go well. The floor of the rooms are converted into solid objects with the thickness of the floor. Only with the ground floor this does not work. My solution is to create an extra lowest floor (call it bottom) with elevation 0. Then give the ground floor an elevation which is the same as its thickness. This seems to work!

There's no need to create an extra floor. Just elevate the floor a little and export your floor (room). Then reset the elevation to 0. Import your floor object and you can still adjust it's height because now it's just another object, no longer a room.