Crafter's Hut

Crafter's Hut is a building where you can upgrade your tools, elemental flasks and home statues. The level of Altar determines the max level of the building, which determines how much you can upgrade proficiency.

Tools
You can upgrade your tools to unlock the recipes for higher level tools. The higher the level of your tool, the higher the level of resources that you can gather. For example, a Lv 3 Pickaxe can mine the ores from Windy Fjord up to Amethyia Isle but cannot mine the ores on Draco Wasteland. However if you mine a higher level resource with a lower level pickaxe(only up to one level below resource level), more durability is consumed when you mine.

Elemental Flasks
You can upgrade your elemental flasks to unlock the recipes for higher level elemental flasks. Higher level elemental flasks deal more damage and can deactivate the affixes of monsters below certain levels.( Lv 1 elemental flask can deactivate affixes of monsters below Lv 30 while a Lv 4 elemental flask can go up to Lv 80 )

Home statues
You can upgrade your home statues to unlock the recipes for higher level home statues.