The Gods sent me something wonderful today.

[Lahrmid]

if one steel takes 56 hours (56 in memory).

And if this supposed length of making is 30 days times a day, which is is 24 hours, you get 720 hours.

if you divide 720 by 56, you get 12. A B12 takes 12 steel to make.

You made a B12.

Wait, I must be very much wrong, coz my answer doesn't seem related to the riddle in question.

Edit: Okay, let's say this length of making was 28 days... That makes a perfect 12...

Edit 2: Actually, my answer does relate to the riddle. "Sheer power", the B12 is the strongest weapon in the game, no?

[Jackard]

its a coke bottle

[DatOneGuy]

It is not a B12.

It may or may not be a coke bottle.