Magic Item Creation

 Magic Item Creation  A modification of the item creation rules in the DMG, creating a magic item can be done in 25 gp increments per hour for a maximum of 8 hours per day. You must have proper tools - alchemists tools to make a potion, a finished weapon or armor for magic weapons and armors, etc - (but not proficiency with them) to make a given item, and you must possess either a formula or a schema for the item in question. If you have a Schema for an item, you progress in increments of 50 GP per hour instead. Scrolls and Potions do not require a formula to make, though they do require access to the correct spells to make them, and they can be produced more efficiently with a Schema. Artificer wizards and Technomancer Engineers may enchant magic items at 20% reduced cost, though this price reduction does not apply to the raw materials used to make the item (weapons, armor, etc.)

 Formulas and Schema  before a magic item can be made, the creator must possess a formula to craft that specific item. A formula costs half the price of the item itself to acquire, and most formulas are easily acquired in major cities or any place with a House Cannith presence. A schema is a specialized, refined formula for creating a specific magic item. Use of a schema allows the type of item it describes to be made in 50 GP increments per hour, and eliminates the need to expend a spell slot fo items that normally require it. A schema costs the same as the item based on rarity, plus 50% of the items cost. House Cannith carefully controls distribution of Schemas, and aside from the rare ones that can sometimes be found in ancient treasure hoards and private collections, Schema can only be obtained from the Cannith Fabricator's Guild.

Read more: http://lostworlds.boards.net/thread/17/general-class-houserules#ixzz4K5uU64pp