Oh I understand. I guess I assumed Phil was saying "...and then throw it into custom design." That makes sense. Thanks!
Not sure if I should put this into a new question, but I am also using two different heat treatments (microwave and thermal), which normally would be fine as a categorical variable, but there is also a switch of a second factor associated with the different levels of the "heat treatment type" factor: Microwave makes more sense to control the "power input" as an additional factor, while thermal makes more sense to use the "temperature" set point as a factor. My guess is that the only thing to do would be two DoE's for the different heat treatment methods, but just thought I'd ask if y'all had any thoughts.
If this should be a second question, I'll be happy to make a new one.
Edward Hamer Chandler, Jr.