As a hobbyist, I've had my fair share of cold solder joints*, so I flinched when I saw what the linked article recommends. I once did something similar with ch

As a hobbyist, I've had my fair share of cold solder joints*, so I flinched when I saw what the linked article recommends. I once did something similar with cheap perf board, and ended up scrapping it because they can only take so much rework before the traces are destroyed. The only "good" I see in this is that they author has left a rat-tail of unmelted solder so at least it will have some flux left to wet the wire. * which show up as intermittent opens at DC with some fun dependence on position / temperature / humidity. At audio frequencies, they're disastrous -- I can only imagine what they'd do at HF.