This document takes the crafting rules for Pathfinder and reworks them to make a bit more sense. It insightfully elucidates several edge cases that illustrate major drawbacks to the current system, and then fixes those problems in a way that preserves both a reasonably amount of realism and the practical truth that your adventurer simply isn't going to spend six months making a thing; she's going to be off adventuring!

It is worth noting that this applies to basic crafting (armor, weapons, etc.) only, and does not include or rework any of the framework for crafting magical items (a system which, as a side note, is also confusing and self-contradictory at times). So if you want a simple system that replaces the current crafting rules for making mundane and masterwork items, this is absolutely worth it to pick up.