Allow simultaneous grid alignment AND object clipping
Allow objects to align to a grid of the Home structure, but also allow objects to clip through one another. This is helpful in creating new structures from existing structures, without having to carefully, painstakingly align them manually if wanting to also make them clip through one another.
For example, a large shelf will snap next to a second large shelf, but being able to clip the ends through one another slightly can make turn it into one large shelf.
