Adding fins to bottom of flat pan (?)

I was just woundering if anyone has tried putting ribs on the inside of their sap pan? What I'm thinking of is making a heat sink on the inside of the pan with copper strips. Adding steel ribs to the bottom will add heat absorption but not incease surfase area. I'm thinking if I was to saulder flat copper stripps to the inside of my sap pan they would act like a heat sink and draw heat increasing the heated surface area inside the pan. I experimented with a pot of boiling water and put in a computer heat sink in it and pushed it against the bottom with a knife. The boiling action exploded around the heat sink as it drew heat up into the water. Copper readilly absorbs heat so if it was sauldered to the bottom of the pan it would heat up (obviously you couldnt use any thermal paste) Steal ribs on the bottom in the same locations would also increase heat absorption. The main thing is it would icrease suface area like a flue and should be easy to clean.