Rystil Arden said:You can't provide the prerequisites unless you are around each day, as per the section on crafting magic items. The homunculus still saves a great deal of time, so the crafter could be crafting something else in the same day that their homunculus is finishing the item's work for the day.
Actually the homunculus specifically states that it takes over the responsibility of time, allowing the master to adventure while it continues working.
So, no, the master doesn't have to be there each day.
Check out the ECS, page 285. It lays it out quite clearly overriding the section on crafting magic items.