* The iron can be combined into one lump as only the amount required is used.
<s>* Iron lumps of 1kg or more, but less than 2kg result in 0.8kg steel lumps while larger iron lumps will result in only 0.4kg steel lumps.<s></s>
* The [[quality]] of the charcoal affects the success chance as well as the likelihood the lump will be high quality. It would be wise to not risk wasting high quality iron on poor charcoal unless you have a lot of it.
* The quality of the iron lump caps the quality of the steel lump.
<s>* A failed attempt consumes the charcoal and transforms 0.4kg of iron into a new lump with 10% of the original QL.</s>
* A failed attempt now result in both the charcoal and the iron lumps weight being decreased by .04kg.
* Only the charcoal needs to be glowing hot.