I am not a professional. But I do make blacksmith tools and knives. I just love the work! It is very rewarding for me. I wanted to increase the accuracy of my heat treating. The Paragon 18” Heat Treat Kiln I bought from Kiln Frog has made a great addition to my shop! It arrived well packed and in perfect condition. It took me a bit to get the hang of programming but that was my fault. I kept trying to make it harder than it really is. Alas, I am a product of pencils and paper! I love this kiln! It is accurate, dependable, well made and thought out. I would buy it all over again. If you are looking to precisely heat treat metals, this gadget ROCKS!! Thanks Kiln Frog!