Mining Hat

[Weapon]

Assuming that you're asking if you should do it because you want some elunium, I'd say do some mining to get some elu and other sellables, if you're lucky you might get about 10 elu in pures and roughs in an hour. If you're doing it to try to make a hat, you may finish sometime next year. The combined efforts of 2 people mining in excess made the first hat after several months.

Though if you have a way to farm Abyss Knights, that's probably a better way to get elus.