So you've soldered your first MCU board - Fixing bad solder.

We often get asked what we think of beginners first soldering projects then offer suggestions how to improve their technique, and often, how to rescue their project.

In this video I've done my best to do a bad job of soldering header strips onto a QFP32 to DIP32 adapter board. There are some cold joints, some dry points, some blobs, a solder bridge, and some nice, corroded peaks.

How do you fix this so that it looks like you're experienced and know what you're doing?

Liquid flux to the rescue (and clean, good quality solder and a hot soldering iron and a good drag soldering technique.)

If you try this technique please come back here and tell us how it worked out.

Hakko FM-203 with FM-2027 handpiece and T15-D16 1.6mm chisel tip

MG Chemicals 4884-227G Sn63/Pb37 solder

Kester 186 liquid flux