Nope. Like I said I only strengthen the bonds. You can do this in a variety of ways. For instance the structure of the bonds. You can change the shape of how the bonds hold without changing the actual substance. You could also increase how strong the bonds physically are held up by the magnetic bond that they share. Ever tried pulling a super magnet apart from a super magnet and compared how hard it is in comparison to pulling apart two refrigerator magnets? It's kinda like that.

Nope but if someone would like to be heavier all I would need is the materials.