Appreciation post: the old sweep in Akron who told me to stop brushing hot flues
Back when I was two years into the trade, a guy named Walt who'd been sweeping for 31 years told me to always let the flue cool before running my poly brushes up there. I figured he was just set in his ways, so I kept brushing right after killing the fire on a few jobs because I wanted to save time. Then one afternoon on a rental over on Copley Road, my bristles started warping and gumming up from the leftover heat and creosote softness, and I burned through a $40 brush in about a week. Walt just laughed when I told him and said he'd done the same dumb thing at my age. Anyone else got an old timer rule they ignored at first and had to learn the hard way?