Re: the ring forges
from what i have heard/read, sauron did not have a part in the making of the three elven rings. also when sauron made his one ring, the smith was aware of his intentions and treachery imediately and was able to help hide the three before they were found.
"So do all who live to see such times but that's not for them to decide. All we have to decide is what to do with the time that is given to us." -Gandalf