This shop was created out of desperation. We have an ancient Jenn Air electric cooktop and needed to replace our old knobs. Needless to say, the knob design has been changed, the old knobs are no longer being made and are no longer in stock anywhere. So, it's off to Cheetah3D, a fairly good 3D parametric design program for the Mac, and some modeling and testing. We went through a three or four iterations getting the knobs to fit and work right. Well, if you have an old Jenn Air electric cooktop and need new knobs, this store offers you an option. Alternatively, you could make something out of Sugru, which is really great stuff, but then your kitchen will look like something out of The Cat in the Hat.