I have built several, they all work well for most things. Baked goods, veggies, and fish
do well but I don,t like them for a thick cut of meat however I am perhaps too demanding when it comes to kitchen equipment
. I have a small one 2'x2' for backpacking, and made a large one 2'x6' for some Hippie friends in northern California
. I was lucky enough to have a mother who is into clean energy, her house is off grid except for H2O. I ended up putting in the solar panels
(Polycrystalline for power and an indirect circulation system for heating
water) when I found the hippies who were putting them in getting high on the job. I don't care if you puff herb, but if you want to be high at work get a job at a head
shop or a CD store or wait until you don't have to use power tools. Sorry for the rant, Solar cookies are the best!!!!