Keep an eye on the temp running without a heatsink. I had one burn up on me getting too hot.
Great looking solder joints!!
Thanks for letting me know. I will keep an eye just in case. I solder everyday do everything from through hole to LGA and BGA, TSOP and VSOP. And package sizes as small as 0201. 0201 is such a pain though. I do deal with 0805 and 0603 packages almost daily though. I can hand solder those with a soldering iron.
Looking like progress is being made! The pi3b+ was redesigned from the 3b to run cooler. You may not even need the heatsink. From Raspbian, you can put the processor temp tool in your toolbar.
Thanks for letting me know that I will be sure to use that tool!