I'm in the process of installing a handrail here and the former owner put these pressure-treated 4x4 posts without cutting them first. They're in the ground already and need to be cut at the correct height to where the railing itself will be attached.
Should I use a circular saw or something to cut from both sides? I already know it won't cut through with just one swipe on one side. Or maybe a good hacksaw or something? Thanks.