Max Forge Bonus

[magnate]

I can confirm that you can achieve the ultimate forge bonus (forging 80-gem items for one gem) with the following:

Forge of the Ancients (immediately halves all forging costs)
Ulmish Master Smith (25% forge bonus)
Hammer of the Forge Lord (50% forge bonus)
The Steel Ovens (20% forge bonus)

I don't quite know how it works though - that's a 95% bonus after initial halving, which means that 80-gem items should cost 0.05x40 = 2 gems. But they don't, they only cost 1 gem. Weird.

CC
P.S. Apologies in advance if the above is no longer correct - it's quite a few patches ago that I did it. It may have been fixed since then.