Special: A dwarf has a +2 racial bonus on Craft checks that are related to stone or metal, because dwarves are especially capable with stonework and metalwork.
A gnome has a +2 racial bonus on Craft (alchemy) checks because gnomes have sensitive noses.
You may voluntarily add +10 to the indicated DC to craft an item. This allows you to create the item more quickly (since you’ll be multiplying this higher DC by your Craft check result to determine progress). You must decide whether to increase the DC before you make each weekly or daily check.
To make an item using Craft (alchemy), you must have alchemical equipment and be a spellcaster.