Hot take: those rope-and-weight chimney brushes are still better than the drill ones for everyday creosote
I know everyone on here pushes the drill-mounted whips, and I get why, they look slick and save your arms. But I did a side by side on two flues in the same 1920s house over in Dayton last month and the old rope brush pulled out way more than the drill did on the first pass. Timed it too: rope took 14 minutes, drill took 11, but I had to go back over the drill section twice to get it clean. The drill spins so fast it just polishes the glaze on hard creosote instead of knocking it loose, at least in my hands. Flue one came out gray and chalky, flue two still had shiny patches I could scrape with a nail. Maybe it's just me but a stiff poly brush with a couple of weights gives you that scraping feel you can hear and feel through the rope. I'm not saying toss the drill, it's great for the light soot on gas flues. But for the heavy stuff on a cold January job I'll keep reaching for the rope. Anyone else actually compare them on the same stack, or am I just stuck in my ways?