A Crafting Kiln is a Building in FarmVille 2, which allows you to craft items for Coins and XP. You'll use the Crafting Kiln to collect Mud from Pigs, with Mud helping you earn large amounts of XP in the long run. Each crafting consumes 1 Power. After placing the Crafting Kiln, some building materials are needed to finish the Building.
After that 4 Neighbors are needed to hire for constructing the Crafting Kiln.
After you've completed the Crafting Kiln, you'll be able to fill it up by collecting Mud from Pigs. This process is similar to that of the Spinning Wheel, that sees you collecting Spinning Wool from Sheep and Rabbits, in that the process happens automatically. You'll be able to craft recipes using Mud inside the Crafting Kiln, with Zynga promising big XP rewards for some of them.
This Crafting Kiln even features a temperature meter that tracks when Crafting Kiln recipes are on fire. Crafting these hot recipes will give you double XP.