And the version that contains more words xD :
You make Class Rank 6 and go in Port Lux . There you will find an Alchemist which gives you a quest " The Core Alchemist Transmuter" or something like this . You accept that and finish it . After this you will get to choose one of the following Transmuters :
Armor - armor items
Battle - battle items
Martial - martial items
Sword - Blades , Katanas , Daikatanas , Great Swords
Artifact - Rings , Amulets , Orbs , Crystals
Basic Craft :
You can only craft Basic if you have Formula Cards . You just right click them , they will insert in one of the slots and then you can craft them by having the materials needed .
Professional Craft :
This is where you Craft armors , rings , orbs bla bla .
Each item craft will ask you :
-A shape
Aramid / Shadowsteel = lvl 1 Shape
Bluestin = lvl 2 Shape
Titanium = lvl 3 Shape
Shadowtitanium ......->...... Mithril / Forcium = lvl 4 Shape
-A number of disks (same requirements as shapes)
-A white item (no craft , no slot)
-Material core (which you get by destroying items)
To go to the next level of Professional craft you must make a item of proof .
Hope you got it :)