When crafting magic items, if desired, the XP required may be evenly divided among any number of willing PC participants. The characters must willingly participate in the creation process and contribute to the ritual. Any compulsion or domination effect can force cooperation, but will most likely poison the magic item, resulting in a cursed item.
Alternate Use for Craft Alchemy
Prepared spell casters may make a DC 15 Craft Alchemy check. If successful, the alchemist creates 1 spell level of Spellbook ink. Additionally, for every 5 points above 15, the Caster creates an additional 1 spell level of ink. Components cost the alchemist 25gp per spell level, and one craft check takes one night.