Re: Ice Crafter Equipped with Dwarven Hammer
 

100% forge bonus [4 armed pretender with 2 unique 50% discount hammers] is 80% bonus, checked on big items like RoW. You can get more than 80% if you have Forge or magic site on top of huge forge bonus afaik.

Re: Ice Crafter Equipped with Dwarven Hammer
 

The lowest possible cost is 1 per magic level required to make the item, so that's the actual cap - it just works out to 80% for all items with a cost up to 15gems.

Re: Ice Crafter Equipped with Dwarven Hammer
 

No, you can make items with 0 cost.

Re: Ice Crafter Equipped with Dwarven Hammer
 

My tests state otherwise. I tested this with a commander having natural 90% bonus plus dwarwen hammer.

Re: Ice Crafter Equipped with Dwarven Hammer
 

This probably depends on game version. Previously (about a year ago) I made 5-gem items for free with less bonus. It may be possible, though, that for such tricks, the Forge IS required. Try with it.

Re: Ice Crafter Equipped with Dwarven Hammer
 

A commander with a natural 100% bonus needs to pay 1 gem, at least - there's one in my little fate/sprite works mod - though again, site or global bonuses might let it go lower, I dunno.

Re: Ice Crafter Equipped with Dwarven Hammer
 

There is no such cap with Forge of the Ancients. It is quite possible to forge 5-gem items for free when you stack FotA, Dwarven Hammer, Steel Ovens, and an inherent forge bonus.

-Max