What you'll need
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How to make it
Keep the ladder fully open and locked, and don't stand on the top step.
1Mark the center line
Decide the arch width, like 48 in for a queen bed. Mark the center and draw a light vertical line with the level.
2Mark the curve's start
Mark the height where the curve begins on the center line. Tap the nail in there, leaving it sticking out.
3Draw the curve
Tie string to the nail and to a pencil, half the arch width apart. Pull it tight and swing the pencil in a half circle.
4Draw the sides
Draw straight lines from each end of the curve down to the baseboard, using the level.
5Tape the straight edges
Tape outside the straight lines. Press the edges down firmly.
6Cut in the curve
Paint along the curved line with the angled brush, slowly. Steady your hand on the wall with your pinky.
7Roll the inside
Roll the rest of the arch. Add a second coat after the first dries.
8Pull the tape
Peel the tape while the last coat is slightly wet. Spackle the nail hole and step back.
Hold the brush so the bristles lean into the line. Pulling toward the curve gives a crisper edge than pushing.
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