"Also, there is a certain scientific law that states that you cannot make or destroy matter (disregard mass fabricator it takes energy and scraps to create something else entirely) "
Actually the laws concern the conservation of energy, but because energy and matter are interchangable, you can create matter at the cost of energy (like the mass fabricator does). Of course the famous E=mc^2 comes into play here, mass at rest simply costs E/c^2, which requires E to be ridiculously huge. The mass fabricator's principle doesn't violate laws of physics.
