Seems to be very well-designed and made. Fittings go together well. The manual seems to be excellent with a lot of great ideas for recipes of a large variety of different fermentations and distillations.The only criticisms I have:Some of the the pictures in the manual are printed a little too dark, and so are not easy to see.I have not used it yet--it would be nice if they suggested a pump for the cooling water to go with it.--MK