I'm attempting to follow this one minute tutorial on creating post-apocalyptic buildings. The dude goes hilariously fast But I think I must have missed something. After I create a cube and use the subdivide tool to make it an object to take a "bite" out of the buildings, I get the following artifacts:
It appears the extra edges are caused by a discrepancy in the size of the faces on the blob and the building. In the video he has no such errors. I've tried playing the video at slower speeds but I don't see anything different.