When crafting items like arrows or crab pots, most boosts to carpentry level increase the number of items crafted. Salamander Skin Boots, Heartwood Shield, Tradesman's Cloak and Carpentry Toolset each give a +10 boost to level and +12 arrows crafted per action. Using Elven Tools for a +20 boost, I still only make 12 additional arrows instead of 24. Experience points are still gained as if I'm level 150, only the item output is inconsistent.
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When crafting items like arrows or crab pots, most boosts to carpentry level increase the number of items crafted. Salamander Skin Boots, Heartwood Shield, Tradesman's Cloak and Carpentry Toolset each give a +10 boost to level and +12 arrows crafted per action. Using Elven Tools for a +20 boost, I still only make 12 additional arrows instead of 24. Experience points are still gained as if I'm level 150, only the item output is inconsistent.