A Dedicated Wright (Eberron Campaign Setting, p. 285) has the following supernatural ability:
Item Creation (Su): A dedicated wright can perform the daily tasks related to item creation on behalf of its master. The master must meet (or emulate) all the prerequisites to create the desired item normally, and pays the gold and XP cost himself. The only cost a dedicated wright can help with is time. The master spends 1 hour initiating the process, channeling spell prerequisites into the dedicated wright, and paying the XP cost to make the item. He may then leave, allowing the wright to carry the process through to completion.
As well as the following skills and feats:
Skills: Craft (any) +7, Craft (any) + 4
Feats: Skill Focus (Craft)
The exact mechanics of the Dedicated Wright carrying the process through to completion, though, are unclear to me.
Were the master to craft the item, then every week (or every day), the master would perform a Craft with a DC determined by the item being crafted, possibly augmented to allow a faster progression, and bearing the risk of ruining half the raw materials should they fail the skill check.
In the above description of the Item Creation (Su) ability of the Dedicated Wright there is, however, no mention of a Craft check at all:
Does the Dedicated Wright have to perform a Craft check at all when working on behalf of its master?
If so, does the Dedicated Wright uses its own Craft skill; possibly crafting an item its master does not possess the skill for?
Or on the contrary, does the Dedicated Wright uses its master's Craft skill; possibly crafting faster should its master have a better skill check? And may the master artificially increase the DC (by increments of +10) to speed the process up?
Or is it that the Dedicated Wright can only work on creating Magic Items, which are crafted at the rhythm of 1 day/1,000 gp1 regardless of Craft skills?
I would appreciate if someone could clarify the above for me.
1 Except for potions, which are normally brewed in a day.