Regarding the upgraded damage boost from blacksmithing lvl 5 when upgrading a weapon at a whetstone - there isn't one?
One of my characters has lvl 5 blacksmtih, and the other has 2 (for this test). I dropped a lvl 5 blacksmithed 2hand sword with a damage range of 94-158 on the whet stone and the output was 117-189 (level 11).
On my other character, using an identical crafted weapon, with 2 blacksmtihing the damage range is the same at 117-189.
Also, you cannot boost a crafted weapon that received the damage boost random property from lvl 5 blacksmithing, I'm assuming this is on purpose as to my knowledge no other damage boosts stack or are doubly applicable.
However, the 'broken'(?) whetstone boost stinks.
That's very interesting as in the spreadsheet it shows multiple layers of upgrading based on the skill.
It could be a bug or intentional will have to see what Larian comes up within coming patches to see if things change regarding crafting
