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what is a speed square used for

The tool is a right triangle with a ruler on one equal side and a fence on the other. My understanding is what you call a 2x4 The 4 stands for 3.5" as you mentioned or 1 and 3/4 by 3.5 inches. I will check out your YouTube channel. While the name is trademarked to Swanson, it has become a genericised trademark with most similar rafter squares being called speed squares. You should almost alway make sure your saw blade is square. Here is the image that pops up when you think of a speed square. Numbers are squeezed together, and there are cryptic lines, hashmarks, and holes. Swanson Tool Co., Inc. describes the tool as a "Try Square, Miter Square, Protractor, Line Scriber, & Saw Guide" in one. Example Applications: You can use Speed Square to square up a kitchen cabinet against another cabinet or against the wall. The numbers labeled as common are your pitches, so number 1 would be 1:12, 2 is a 2:12.....ours is 6:12, so tilting the speed square until we get to 6, now you have the right angle you can mark and cut. The Spruce uses cookies to provide you with a great user experience. Reply How to: If you don't have or can't find your bubble or laser level, you can use Speed Square for this, but you will need to have a string, twine, or chalk line on hand. The Speed Square combines common functions of the combination square, try square, and framing square into one. But this inexpensive tool can be your most powerful ally in so many home remodel projects. This is what a house structure looks like, not to scale, but it gives you the picture. Now those plates are going to be identical. Place the Speed Square on the material with the pivot end up. Never seen the speed square in any craft, hobby or hardware shops. How to: Speed Square isn't just for squaring up work materials; it can be used for checking square on tools, as well. Make sure to get a metal one, the plastic ones are junk, they melt/deform in heat. As the son of an old school master carpenter, I have long been a "tinkerer" in several trades. How to: The ability to squarely cut two-by-fours is a classic Speed Square maneuver and is well worth the price of the tool just for this. For instance, with a circular saw, making sure there is no power going to the saw, you can push the blade guard back and making sure the blade is square to the bed of the saw. Example Applications: Cutting two-by-fours is one of the most common activities in home improvement, which you will use for finishing basements, building walls, and similar projects. It is marked with the word Pivot at the right angle point and displays Degrees on its hypotenuse, Common and Hip/Val markings on its midsection. Weight the hanging end of the string with a light weight such as a bolt. All you have to do is make a 90° line, then flip the square over and make sure that line is lining up right with no gaps. U.S. Patent and Trademark Office Database - SPEED, U.S. Patent and Trademark Office Database - SPEED SQUARE, How to Use a Swanson Speed Square as a Framers Square, https://en.wikipedia.org/w/index.php?title=Speed_square&oldid=985742049, Creative Commons Attribution-ShareAlike License, This page was last edited on 27 October 2020, at 18:03. Speed Square's true secret lies in the dense congregation of information and features packed on its face: a lipped fence, deeply incised numbers, holes, notches and cut-outs. The one thing that I would have liked for you to include would have been an example of the placement of the birdsmouth. Many thanks for describing the 'speed square'. If the work material is level, the string will hit the 45 degree mark. Also, gave him one of my old S-squares- no manual. Did you make this project? If only for that easy accessibility, Speed Square should be one tool that you definitely own. Very clear and concise instructional video! This 6:12 pitch is a 26 1/2° angle. (Perhaps that is on another video.) Participated in the Back to Basics Contest. He later founded Swanson Tool Company, Inc. to produce it. 6 Speed Square Uses . Drape a string (such as a chalk snap line) over the Speed Square, resting in the pivot groove. Remarkably, using a Speed Square can be preferable to using a bubble level because you can measure the exact deviation down the degree. I have a few of these. You can also use the scribes to make straight lines down the board, just line up the scribe mark to the measures above. This one does have nice scribe lines that will work better with a regular pencil or pen. Get daily tips and tricks for making your best home. Did you you know that there is a right way to carry a Speed Square? If the pitch was 12:12, the angle would be 45°. Another thing about the Swanson Speed Square is that they all come with the Swanson Speed Square Blue Book. This one isn't really the best for us, we don't build buildings, so the chart or the larger scribe marks aren't a selling point in our case, but it could totally be for you. Say you want a simple 45° angle. Simply hold the square against the long edge, you can draw a straight, square line. Share it with us! It is a helpful quick measurement since the width of two-by-fours is actually 3 1/2 inches, not 4 inches. Moving away from boards for a second, another really practical use for a speed square is using it for your saw. Which is a good thing, but it's a lot to take in. Use a regular pencil, not a carpenter's pencil. Instead, remove the square and cut by following the line. It's commonly referred to as a roofing square or rafter square. The placement of the birdsmouth just depends on the width of the building. The most common use of a speed square is creating a square line. If there is a gap, this means that the two elements are not square with each other. Carpenters use it to make basic measurements and mark lines on dimensional lumber, and as a saw guide for short 45 and 90 degree cuts. half the angle is not half the ratio of the sides. Adjusting the saw back to 90 degrees by consulting the saw's markings isn't always accurate, especially for older tools. The unique thing about this one though, it extends to turn into the full 12". Here's how you would line up the speed square to create that angle. With the tool unplugged, rest one side of the Speed Square against the side of the blade. I just didn't know how to use them. As a do-it-yourselfer, do not let yourself be put off by Speed Square's emphasis on laying out stairways and roofs. Bathroom cabinets, too, may be squared. This book goes way more into detail than what we are talking about today, just thought this was super interesting. The sum of the angles equals 90 degrees(22.5° +67.5°= 90°). So place that point (the 90° point on a square) on your mark. This would be a great layout tool for putting a wall stud in place. Embedded degree gradations on the tool eliminate complex trigonometry, making for speedy lines. I have owned and used Speed-Squares for decades. angle = arctan(rise/run) arctan(6/12) = 26.6°. You Need to: Find out if something is level and if not, exactly how many degrees out of level it is. You can use a square instead of measuring out the perfect line and clamping down a guide rail. You want to form a 90-degree angle with those pieces. Genuine Swanson Speed® Squares also have a diamond shape cutout on the ruler side at 3½ inches. I am a practicing, licensed Architect ... 40 years + in business, with a staff of up to 14 people in earlier years. These marks can be between 3/8-inch to 3 1/2 inches from the edge of the board.

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