Reddit reviews The Kiln Book

I'm a fan of doing and trying new things. Building a kiln is probably something you could do. I'd just warn you that the brick in your existing grill probably won't stand up to the heat of a high fire kiln. There are specific bricks formulated as fire brick and they are rated to various temps.

If you like the idea of building you own then go for it! I'd start with some research. Maybe buy your wife a kiln book for Christmas then see what she says?

https://www.amazon.com/Kiln-Book-Frederick-L-Olsen/dp/0812221869/ref=sr_1_1?ie=UTF8&qid=1481064608&sr=8-1&keywords=kiln+book

This looks like an olson.

Very similar to the one on their kiln kits page.

As /u/dirtygremlin mentioned, "The Kiln Book" is an invaluable resource.

I have the 3rd edition but it looks like there is a 4th edition out.

There are some turn key gas kiln setups out there but they are all going to require more work to set up than an electric kiln.

Almost all of them will have some custom elements involved.

You definitely want to do more research on the firing and function of kilns. The Kiln Book is a great resource. If you want any control over the end product you're going to have to put a significant amount of engineering into this project.