How Everything Works on Instagram: "Carpet installers use this technique to get a perfectly tight, wrinkle-free finish. After rolling the carpet into position, they use a knee-kicker—a padded tool they drive forward with their knee—to stretch the carpet across the floor. By applying their body weight and moving in sync, they create even tension that removes bubbles and slack. Once stretched, the carpet locks onto tack strips along the edges of the room, holding it firmly in place. It looks unusu