it works for me, when it's idle, it's about 43 degrees, when gaming, it's about 67, 1. use to old PC cover, and put it under your macbook pro, the steel will conduct heat some the bottom of your macbook pro, as it's a heat sink. that will cool your laptop for few degrees, 2. to further cool your macbook pro, buy one of those slanted door stoppers, and put it under your steel PC cover (since the PC cover is soft against the weight of the macbook pro and your hand) , and use a small box, and put it on the other side to support it, so now, it's tilted a few degrees, 3. (this is optional) if you worry about the macbook pro sliding down (which is pretty unlikely, unless tilt it by like 45 degrees, but I did it cuz i always over-do precaution), go buy a pack of those rubber dots (the sticky ones) and stick them the PC cover and/or your table. this significantly cool down my macbook pro. as it's at 43 degrees when idling, compare to 53 before,, and haven't yet reach over 70 when gaming. total spending: $6 $3 slanted door stoppers $3 sticky rubber dots My gf told me that I should've got those door stoppers and rubber dots from dollar store. so this could all be done with less than $3. let me know if there's any questions,, and i can post pictures later, when i get home. right now, i am even thinking about getting a copper plate and put it between the PC cover and macbook pro. the copper plate cost around $20. but since copper has twice the conductivity of aluminum. I am pretty sure it will greatly cool down the mbp. I am just thinking if i should spend extra the extra $20.