Rant: Choosing between a 10-inch and 12-inch knife for a big ceiling job in a new build
Went with the 12-inch for the first coat to cover more ground, but the extra weight made my wrist ache after a few hours. Anyone have a better method for those big, flat overhead sections?
logan648 nailed it with "the slower, lighter tool actually gets you done faster." I learned that the hard way too. My first big ceiling job I went with a 12-inch and spent half the day resting my wrist between passes. Switched to a 10-inch for the second coat and finished way quicker because I could keep going. The 12-inch just wears you out mentally too (knowing every stroke is a grind makes you dread the next section). That extra inch of coverage isn't worth it if you're stopping every 15 minutes to shake out your arm.
Watched my dad do this for years, always going for the bigger tool to save time. He'd end up with a sore back and a half-finished job by lunch. Sometimes the slower, lighter tool actually gets you done faster because you can keep going without a break.
Remember helping my uncle patch his garage ceiling, he insisted on using this massive heavy-duty roller. Thing was like pushing a soaked brick across drywall. He was so tired after twenty minutes he had to sit down, and I ended up finishing the whole thing with a smaller one. The right tool isn't always the biggest one, it's the one that lets you work steady without killing yourself.