I have a problem with the Blender sculpt mode. If I extrude one cube after the other, they're not connecting each other. That becomes a problem, if I want to start with the sculpt mode. I add an subdivison surface and their becoming to two kind of single parts(picture red), even if I join to the simple mode, I can't sculpt them because it's building a gap. Is there a way to connect these two parts (red) together?
Thanks for any help!