Board Thread:Lore/@comment-25954624-20150404151445/@comment-27723099-20150425164103

Recneps wrote: Dragon scales are weaker than mithril, and as Sinthoniel says, his armor was mostly diamond. Remember how Bilbo was looking at his diamond armor and noticed a big hole in the diamonds? Also, Bard's single arrow easily penetrated dragon scales. Most arrows were deflected by Smaug's scales. Bard had to luck/fate/hidden support of the Valar/whatever to hit the small spot between the scales where Smaug was unprotected.