Success!
Yesterday I received the PCB boards from OSHPark and tried to do some assembly
The first board was not so lucky, I think I had put too much pressure on the SDRAM device, I could see that the solder balls has been "flattended" to the point where they touched their neighboring "balls"
The second board was a total success!
I started out by finding the best spot for the IR heater, for the process I used around 140 to 150 deg C (top PCB temperature). I know it is not the best approach to place the PCB right on top of the IR heater, but I was in a hurry
It's fun actually to see how much you can "wiggle" a BGA device when it reflows, you give it a tiny push with a pair of tweezers and it immediately jumps back.
I have attached a number of pictures in random order...