What's a good way to get Demonite ore in terraria?

I want to get as much Demonite ore as possible to make Shadow armor and to sell the leftover ore, but there is no way I could get enough from mining.What should I do?


Solution 1:

The quickest way to obtain large amounts of Demonite Ore is to defeat Eater of Worlds. Over and over. It can be summoned using Worm Food.

Solution 2:

The best way to get demonite ore is to either farm the EOW (eater of worlds) or EOC (eye of Cthulhu). If you want crimtane ore which is basically the same. Farm the BOC (brain of Cthulhu).