I recently got myself a cheap hot air gun, and as a test for it, I assembled one panel of the servo controller boards.

I must say that it really changes everything. While applying the solder paste is still a little slow without a template, soldering all the parts is a moment, and they magically snap into their correct positions. I had a few solder bridges due to too much solder paste in some places, but a solder suction tool took care of those easily.

You can see on the photo the testing probes that I'm using to test all the shields. The result this time was 100% working.

Soldering the pin headers was even faster, at least compared to the manual process I used before. How come I didn't get one of those hot air things earlier?