Comment by puzzlingcaptcha

FWIW, there's a step by step soldering guide in the readme:

https://github.com/PegorK/f32#building-the-f32

It looks doable, but of course a lot of carefulling is required when placing the components.

Wouldn't 0402 be 4x larger (if comparing lengths) or 16x larger (if comparing areas), not 2.5x?

Edit: Nevermind, I was wrong. I see now that the sizes don't actually directly correspond to the number codes! 01005 is 0.4mm x 0.2mm and 0402 is 1mm x 0.5mm. That's annoyingly confusing, IMO.

With one of those mini-hotplates for reflow soldering and a LCD microscope it's still fairly doable.

Step 1: build a robotic arm with larger components...

infuriating fact: 0402 metric = 01005 imperial, 0402 imperial = 1005 metric. looks like this is the only semi-duplicate in common use.