Originally posted by Discos
are you sure he sent Sauron,
He did not send Sauron, but Sauron was one of his Maiar before he was corrupted by Melkor; and it was Melkor who made Sauron come to Middleearth itself, not Aule.
But where do you think Sauron got all his knowledge about metals or the forging of rings from? 😉