Home Garden

How to Cut Compound Angles in Wall Framing

Compound angles rarely present themselves in wall framing. The typical wood-framed wall uses simple 90-degree angles to join the framing members. A notable exception occurs when framing dormers, the extensions built into roofs to give a home more living space. Shed dormers, for instance, have wall studs that fit between the shed rafter and the trimmer rafter. The studs must have several angled cuts to fit properly. The top part of the stud, for instance, needs a compound cut.

Things You'll Need

  • 2-by-4 stud
  • Level
  • Pencil
  • T-bevel
  • Circular saw
Show More

Instructions

  1. Mark

    • 1

      Place the side wall stud up against the shed rafter and the trimmer rafter. Ensure that you place it over the exact spot where you will nail it. Plumb the stud with a level.

    • 2

      Draw a line at the bottom of the 2-by-4 stud where it meets the top edge of trimmer rafter. Ensure that the line mimics the slope of the rafter.

    • 3

      Draw a line on the stud where it meets the top of the shed rafter.

    • 4

      Draw another line where it meets the bottom edge of the shed rafter.

    Cut

    • 5

      Obtain the angle of the bottom line with a sliding T-bevel. Set the sole plate of a circular saw to this angle. Cut through the wall stud along the length of the trimmer rafter line.

    • 6

      Find the angle of the shed rafter top line. Set the sole plate to this angle. Make the cut through the width of the stud.

    • 7

      Adjust the cutting depth of the saw to 1 1/2 inch. Cut the shed rafter bottom line to this depth. Saw down from the end of the board to the cut you just made. This creates a notch that will let the stud fit against the shed rafter.