The ROG blacksmith is located near the top of the main circle in the town center.
This is where you will do things like upgrading weapons and armour, runes, skills, making gems, socketing and even disassembling items
Skill enhancement is for your skills and runes. There is a small red and blue icon on the items equipped on you and your merc.
Only items not equpped on you or your merc can be used to enhance items equpped, this prevents accidental using to enhance
To socket a gem in a item with a socket, you need to click on drilling to unlock the socket
If the item does not have a socket you can click on mosiac then drilling then socket color.
The sockets can been seen on the character and merc pages beside the left weapon slot
Socket color is to change the socket color
Red is for Power : atk, ba
Green is for agility: crit, hit, dodge, penetrate
yellow is for constituation : maximun life and HP regen,
blue is for intelligence : elemental resistance, energy shield, max mana and mana regen
And finally synthing