So this might be out there. I was thinking of machining my own all copper heatsink for my BMP. I did replace the thermal paste on it, the idle temp is at 33, but on load it still goes to 90 (with ambient temps of ~22-25). The latter part is what drives me crazy, 90C I think is high, the whole thing gets so hot, it's crazy. The heatsink I saw in the BMP when I was changing the TP, is mediocre at best - it's aluminum with heatpipes, and god knows what's in those heatpipes, if experience has taught me anything with how they apply the thermal paste, those heatpipes might be useless. So, do we have any engineers who can give their professional opinion in regards of doing an all copper heatsink as opposed to the one in there already?