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How to Use a Framing Square

Watch more Home Repair & DIY videos: Subscribe to Howcast's YouTube Channel - Learn how to use a framing square by following these instructions. Howcast uploads the highest quality how-to videos daily! Be sure to check out our playlists for guides that interest you: Subscribe to Howcast's other YouTube Channels: Howcast Health Channel - Howcast Video Games Channel - Howcast Tech Channel - Howcast Food Channel - Howcast Arts & Recreation Channel - Howcast Sports & Fitness Channel - Howcast Personal Care & Style Channel - Howcast empowers people with engaging, useful how-to information wherever, whenever they need to know how. Emphasizing high-quality instructional videos, Howcast brings you experts who provide accurate information in easy-to-follow tutorials on everything from makeup, hairstyling, nail art design, and soccer to parkour, skateboarding, dancing, kissing, and much, much more. Step 1: Hold the framing square Hold the framing square in your hands. Note that it is made of one flat sheet of metal with two arms positioned at right angles to each other. Step 2: Observe the tongue Observe the shorter arm, called the tongue. It is 1 1/2 inches in width and from 14 to 18 inches in length. Now observe the longer arm, called the blade. It is 2 inches wide and 24 inches long. Step 3: Examine the graduated scales Examine the graduated scales on each arm. The face of the square, the side where the manufacturer's name usually appears, has a scale broken down into 1/8th and 1/16-inch intervals. The scale on the back is broken down into 1/10th- and 1/12th-inch intervals. Step 4: Cut a board Cut a board. Place the blade against the edge of a piece of lumber that you wish to cut at a right angle. Mark a line along the edge of the tongue and cut at the mark. Step 5: Layout a roof rafter tail Place the framing square flat near the end of a board you want to use as a roof rafter. Align the blade with the bottom edge of the board and the tongue with the roof pitch. Then mark the cut. This will be the tail end of the rafter, and the cut will be horizontal when the rafter is installed onto the roof. Tip The pitch of a roof is the vertical rise in inches per foot of horizontal run. For example, a roof that rises 6 inches for each 12 inches of horizontal run has a 6 inch pitch. Step 6: Mark the vertical end Slide the framing square along the length of the rafter board, keeping the blade at 12 inches and the tongue at roof pitch until you reach the end of the rafter's span. Mark the vertical cut where the rafter will connect to the ridge board. Step 7: Cut the rafter Cut the laid-out rafter with a circular saw. You can now use this rafter as a template for any others you cut. Did You Know? According to the National Association of Home Builders, the average 2,085 square foot, single-family home can include 13,127 board feet of framing lumber.
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