You are skilled in the creation of a specific group of items, such as armor or weapons. Like Knowledge, Perform, and Profession, Craft is actually a number of separate skills. You could have several Craft skills, each with its own ranks. The most common Craft skills are alchemy, armor, baskets, books, bows, calligraphy, carpentry, cloth, clothing, glass, jewelry, leather, locks, paintings, pottery, sculptures, ships, shoes, stonemasonry, traps, and weapons.
A Craft skill is specifically focused on creating something. If nothing is created by the endeavor, it probably falls under the heading of a Profession skill.
1 Traps have their own rules for construction.
You can practice your trade and make a decent living, earning half your check result in gold pieces per week of dedicated work. You know how to use the tools of your trade, how to perform the craft's daily tasks, how to supervise untrained helpers, and how to handle common problems. (Untrained laborers and assistants earn an average of 1 silver piece per day.)
The basic function of the Craft skill, however, is to allow you to make an item of the appropriate type. The DC depends on the complexity of the item to be created. The DC, your check result, and the price of the item determine how long it takes to make a particular item. The item's finished price also determines the cost of raw materials.
In some cases, the fabricate spell can be used to achieve the results of a Craft check with no actual check involved. You must still make an appropriate Craft check when using the spell to make articles requiring a high degree of craftsmanship.
A successful Craft check related to woodworking in conjunction with the casting of the ironwood spell enables you to make wooden items that have the strength of steel.
When casting the spell minor creation, you must succeed on an appropriate Craft check to make a complex item.
All crafts require artisan's tools to give the best chance of success. If improvised tools are used, the check is made with a –2 penalty. On the other hand, masterwork artisan's tools provide a +2 circumstance bonus on the check.
To determine how much time and money it takes to make an item, follow these steps.
If you fail a check by 4 or less, you make no progress this week. If you fail by 5 or more, you ruin half the raw materials and have to pay half the original raw material cost again.
Progress by the Day: You can make checks by the day instead of by the week. In this case your progress (check result × DC) should be divided by the number of days in a week.
You can make a masterwork item: a weapon, suit of armor, shield, or tool that conveys a bonus on its use through its exceptional craftsmanship. To create a masterwork item, you create the masterwork component as if it were a separate item in addition to the standard item. The masterwork component has its own price (300 gp for a weapon or 150 gp for a suit of armor or a shield, see Equipment for the price of other masterwork tools) and a Craft DC of 20. Once both the standard component and the masterwork component are completed, the masterwork item is finished. The cost you pay for the masterwork component is one-third of the given amount, just as it is for the cost in raw materials.
You can repair an item by making checks against the same DC that it took to make the item in the first place. The cost of repairing an item is one-fifth of the item's price.
Does not apply. Craft checks are made by the day or week (see above).
Yes, but each time you miss by 5 or more, you ruin half the raw materials and have to pay half the original raw material cost again.