Protracting – To use the protractor feature, you first find the Pivot point marked in the 90° corner of the square. REMINDER: Be sure to mark your board along the square edge. My first attempt to build a gable roof, "I'm a licensed plumber who works on many different projects, but I never new how to properly use a speed square, "Excellent and very understandable instructions as well as precision drawings and diagrams. The guide directly above the protractor is marked “Common.” On it, common roof pitches are indicated as the rise (in inches, over a 12″ run), for common rafters from 1″ to 30″. Place the square with its fence on the top edge of the lumber. - - - - Call 24/7 on: 03330 112 112 Call 24/7: 03330 112 112 Shop by Product Code Need Help. 2. What Types of Flux is Used in Electronics Soldering. On my shopping list, but which size do people recommend? This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Then, if you need to mark a straight line, follow the straight edge of the speed square with a pencil. Approved. These cookies will be stored in your browser only with your consent. Pivot stays, hypotenuse moves. If you want to mark a 45-degree line, draw along the angled side of the speed square. This website uses cookies to improve your experience while you navigate through the website. With the pivot point of the lip still against the edge of the board, look at where the edge of the board passes through the degree scale. Last Updated: April 18, 2020 Necessary cookies are absolutely essential for the website to function properly. Measuring – Along one of the right-angled edges of the square is a conventional English ruler which is either 7″ or 12″ (depending on the model of speed square). There’s one key thing to note about Pro Tool Reviews: We’re all about the professional tool user and tradesman! FREE next day delivery available, free collection in 5 minutes. The degree scale is the outermost one, the one that lies directly along the hypotenuse. When he doesn't have his hands on tools himself, he's often the man behind the camera lens making the rest of the team look good. For a 24-foot wide building, the run would be 12. As an Amazon Associate, we may earn income when you click on an Amazon link. the base of the triangle). Trusses are rafters with a bottom plate rather than a joist and with internal bracing built in. I found it in the archives of the Oak Lawn public library, Oak Lawn, Illinois, being the home of the Swanson Tool Company. There are many other ways the speed square can be used, but I will focus on these two in this tutorial. Thanks. I hope you’ve learned a little more about that strange triangular tool known as the speed square. Married a guy who built things. Loved helping him out. 7" Professional Aluminum Rafter Angle Square with Rafter Square Instruction Book and Tables Escuadra Profesional de 7" para Ángulos de Vigas con manual de instrucciones y tablas para envigado incluidos MARKING EDGE Borde para marcado TOP CUTS/ HIP & VALLEY RAFTER SCALE Escala para cortes superiores y cortes en ángulo estilos Hip y Valley COMMON RAFTER SCALE Escala común para … That number is your angle. You do need a plumb-bob, but you can improvise one with a string and a nut (or some other suitable weight). Mark that spot and use the square to mark 1 inch in from the bottom of the board and 3 1/2 inches down from that mark to make a triangle, a notch called a birdsmouth where the rafter will rest on the top plate of the wall. After years of DIY, I have finally obtained my first Swanson speed square (Speedlite made in the USA) and {quite a change, that last phrase! } A speed square’s main uses are. Brandon Fry. He wanted to create a device to make it easier to quickly determine roof pitches. ", "Was not sure how to mark degrees on the speed square. Explaining the entire process for doing this quickly becomes too convoluted for this overview. Happy measuring. Very well written and good pictures. The tool allows you to work on projects with ease, and is a necessary tool if you frequently work with wood. was a furniture maker for over 35 years. It provides a straight edge, it allows for quick scribing, and it can find angles and pitches quickly. Anyway, thanks for this. Take a board, a 2 x 4  or 1 x 4 works fine, and hold the square so the lip is flat against the long edge of the board and the square lies across the face of the board. Include your email address to get a message when this question is answered. . To easily scribe a rip or trim line along a board, you simply hold your pencil in the desired notch and run the fence along the edge of the board to make an accurate mark down its length. Speed squares also have tables for cutting hip and valley rafters, which run diagonally at different angles than common rafters. The aim of this tutorial is to provide an understanding of how to read two main scales on a speed square. On a speed square it is the edge at which we read the degree scale. By using our site, you agree to our. If you’re like us, finding the perfect gift for that [...]. If you have any tips or tricks on working with a speed square, or any questions or comments, please post them below. The speed square comes in 2 sizes, a 7 inches (18 cm) pocket version, which can travel in most portable tool kits and a larger 12 inches (30 cm) version which is often used for stationary work. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Using a pencil to draw the line will allow you to erase the mark if you make a mistake or change a plan. Holding the lip of the Speed Square against a board, you can mark out perfect perpendicular and 45° lines as quickly as it takes to slide the Speed Square around. Dozens of projects in every issue covering Robots, Drones, 3D printing, craft and more, Tips and skill-building tutorials with inspiration from the leaders of the maker community. Identify where the line should be drawn. Other Cool Features – The Swanson Speed Square has a patented feature — the diamond cut, a diamond-shaped cut-out on the ruler edge of the tool. This video clearly runs through most of the key features of the speed square and how one might use it in day-to-day angle measuring and cutting, and in determining pitches. You'll find Chris behind the scenes of almost everything Pro Tool Reviews produces. For more on the history of the Swanson speed square you may watch this video. 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