Pathfinder 1E Crafting and Customization

[The Black Kestrel]

So it looks like I'll be running a game towards the end of the year if all goes well. I'm prepping ahead of time and one of the activities the group I will GMing for enjoys is crafting. I'd like to add some depth for them and really allow some cool custom gear. I'll be using Making Craft Work by Spes Magna Games as the base rules governing the process of crafting. For customizing their mundane gear I've looked at the Masterwork rules from the Black Company Campaign Setting, the Mundane Items Characteristics rules from the Advanced Gamemaster's Guide and the Master's Forge article from Dragon 358 for incorporation into the game.

What I would like is any additional crafting rules people know of and/or their experiences with mundane crafting.