Solder wouldn't hold a locker closed... Besides, this thing says its meant for "light duty" jobs, and it is

. Oh well... Still works fine. I've been soldering for like an hour and I chipped the tip already

It's really not meant to be pressed harder than a gentle... baby-push... I hope RS has replacements. Now, if only they made mig welders portable and cordless

You'd have no problem with those lockers