Re: Does augmenting nonmagic weapon make it magical?
The answer to that is no because the augments are not magical they only have ways of enhancing your items. Augmented items take on all the properties (except weight heh) of the augment (no drop aug = no drop new item, etc). So if your weapon is not magical and you add an augment it doesn't become magic.
Re: Does augmenting nonmagic weapon make it magical?
By weight I mean the weight of the aug. I put plenty of augs on my armor and weapons and none of them take on the weight of the aug (0.1wt). If there are other augs that specifically reduce the weight of an item to 0 or 1 or whatever I have never encountered one.