Now divide that by two to get the miter angle for each of the two pieces that will form the 72-degree angle. But using a regular drill bit, drill at a fast speed but very low feed...almost spinning in place...to heat up the plastic ahead of the drill bit tip. Helpful DIY 59,634 views. Sharpen bench chisels with a 25° bevel angle for best results. My suggestion would be to use an old plastic mechanical drawing plastic triangle, or just buy a cheap new one. ½" 14 degrees The average miter saw cuts most angles with ease. a small pilot hole is a good suggestion. Lay your workpiece in the corner against the plexiglass and the wood, mark a line along the 45° plexiglass edge, rotate the piece a little and mark another line. Here's an angle finder with a two arm design for measuring inward and outward angles. ⅜" 11 degrees. OR if you don’t have a protractor that gives you a corresponding number, you take the angle you have (again we’ll use 100 °), divide it by 2, giving you 50° and subtract it from 90°. It should go through quite easily. Place the bevel onto a flat surface with the stock at the base. Miter saws and miter gauges read angles from the fence. Transfer the diagonal line to the square ends of the scrap wood with a pencil. If you want to add a microbevel (a thin, secondary edge right at the tip that makes touch-up honing easier), then go with 30° for O1 and 35° for A2. One arm is positioned on the flat surface of any piece of wood. Graduated in four easy-to-read scales. Adjust this tool to measure angles for carpentry by loosening the lock nut on the bevel square. In my case since I butt-jointed two pieces of the same measurements, I ended up with one side of 6cm, and the other of 8cm of height. Shaddy began publishing in various magazines in 1992, and published a novel, “Dark Canyon,” in 2008. (look the 1st attached photo), BUT since the 45° line passes through the center of any workpiece that is placed against the 90°angle (aka the wooden pieces faces), I could still use it to mark the center of a square bigger than 12cmx12cm, simply by placing it against the 90°angle, and laying a ruler onto the 45° plexiglass edge. The bevel square, often referred to as an angle-finder, is a short, flat blade that swivels and locks on a handle. how to use an angle finder to cut wood + how to use an angle finder to cut wood 29 Dec 2020 Are you new to woodworking and looking for free woodworking projects, plans, tips, ideas & more? 3:00. Be sure to pre-drill the holes in order to avoid cracks. 3 years ago. The sliding T-bevel can be used to either originate an angle or trace and transfer a current angle. Will this exact size jig, work with any size item needed to find center? ⅛" 4 degrees. If you're making something with six equal sides, each requires a 30-degree miter angle. Measure the outside angle of the wall with the degree finder. They have two small arms on a swivel. Buy online or in store with confidence. Works like a charm. The most common angles are 45, 30 and 22.5 degrees. Adjust the blade 1 or 2 degrees at a time, and cut your test pieces again until you get it right. how to use an angle finder toolhow to how to use an angle finder tool for Single wide mobile homes are single section homes ranging from 400 sq ft to 1330 sqft. Paring chisels should be used only for hand-guided work, never struck with a mallet. To continue the example, with a slope of 0.71428571, the angle is 35.5 degrees. You can scale it to any measurement that fits better your needs, or you could lay a ruler onto the 45° plexiglass edge in order to temporarily extend the capacity of this jig keeping it small enough to don't waste materials and space around your workshop. Place one of the pieces on the bed of a miter saw. Drill slow and preferably in a drill press. Join … Place the two pieces on the drawing, aligning them with it. I have worked with optical acrylics on military aircraft. Bending Wood with a Hot Pipe. ¼" 7 degrees. Lay your workpiece in the corner against the plexiglass and the wood, mark a line along the 45° plexiglass edge, rotate the piece a little and mark another line. The first photo shows the angle finder in use to read the angle of a rafter in my attic. Stay tuned! Thank you for reading my Instructable. This video will teach you how to find an inside angle without an angle finder and cut it on your miter saw. Make a model by placing two similar pieces of scrap wood on the drawing. ;). Align the ends of them together, as if they already had miters. Thanks to this simple, yet accurate tool you will be able to quickly mark the center of your square or round workpiece, saving a lot of time. Start by drawing a full-sized footprint of an angle on a piece of scrap wood. Then divide it by two to get the angle of the miter. I have put holes in plastic that way before. Cutting angles on wood takes practice, patience and a little math knowledge. If the measurement falls in between the numbers on the table, that means the sill angle is in between, too. How To Use a Sliding T Bevel. It's fine to use a calculator to figure the correct corner angles to cut for shapes with equal sides. This will give you the degrees of the angle. ;)Feel free to comment and ask if you need to know something! Apply wood glue on the joint and clamp the pieces together being sure to let them dry in square (photo#1). you are right but it's just "plastic"... let's not panic for breaking it ahaha. How to Measure an Inside Corner with a General Angle Finder? The only limit of this jig is the 45° line. Saws are not 100-percent accurate, and operator error is common. The angle finder, obviously, is for accurately measuring the precise angle of a structure and comes with a memory feature that records the various measurements for later use. Adjust this tool to measure angles for carpentry by loosening the lock nut on the bevel square. If you go to scrollmania.com and look at the diagram for the Angle Calculator, you can get a clearer idea of what that diagram represents. Protractors read angles from the corner. Feeling stuck on how to cut angles in wood? It is an angle finder with illuminated flip display, mechanical lock function, built-in bubble vials, hold function. you just need a drill bit of the right size and you have to drill the plastic at a very slow speed. To find the angle set by your sliding bevel, the best tool to use is a standard protractor. Lock the blade at the angle, and make the cut. 99 $36.99 $36.99. Thanks to your comment I'll upload this ible with more infos about the limit of this jig, and with a simple trick that can be followed to modify this jig in order to use it with circles or squares of ANY dimension. 5 Sometimes getting plexiglas to score and break accurately is problamatic. First of all cut a piece of the right measure (mine is 8cm x 10cm), and then make a 45° cut. A precision tool designed for you. Also it is advised to drill a pilot hole then step drill with a unibit to the final size. That angle, with the thickness of the wood in the photo and 1/4" wide ring, is about 20˚. More pointed tip. Two arm design measures inside and outside angles; Graduated in … Starrett's updated combination protractor takes the guesswork out of cutting crown molding. the only "problem" is to find a screwdriver of the right dimention. Angle finders use two hinged arms and an integrated protractor-like scale or digital device to read the angles of both inside and outside corners. I can place my angle finder under or over an angle to be measured. To make a new angle: Loosen the wing nut adjustment so that the blade is free to rotate. After 15 minutes reinforce the "L piece" adding 3 long screws. If you do a five-sided project with all sides equal, divide 360 by five to 72 degrees. The method consists of dividing 360 by the number of sides to determine the angle of the corner. Congratulations! It's time to work on the plexiglass piece. Empire Angle Finder Review-A Protractor For Outside And Inside Angles - Duration: 3:00. [17] Angle Pro is an accurate angle meter and level app. If the wood were thicker or thinner, the angle would change. I would suggest perhaps a small point soldering iron to melt through it. Able to measure angles with +-0.2º to +-0.3º accuracy depending on your device. Video of the Day Volume 0% The triangle is right on. Several smaller angles can go together to create the total 360 degrees. 5:55. Pheww, now I can mark Centre lines without having to research mathematical techniques that I'd struggle to understand anyway! Plexiglass is an easy material to work with. Hi Logwolf! Gap Angle. In other words, the angles surrounding a point total 360 degrees. How to use a protractor (angle finder) for miter work? Align the blade with any given angle on paper or scrap wood, or swivel the blade to … Trying different methods helps you figure out which one works best for you and for your particular project. The guy at the hardware store said all I do is take the figure and cut one angle at that # and the other one that would add up to 90. Thus, each joint or corner forms an angle of 72 degrees. You now have the angles to form your obtuse angle that you measured. Digital Angle Finder Ruler, OLI aluminum 14 inch Angle/Length Measuring Protractor for Woodworking (Aluminum, 14 inch) 4.4 out of 5 stars 32. I wish I had seen this years ago! $34.99 $ 34. good idea since the bite will be less drastic and not as likely to produce as much stress. But when you want to get creative with something, you may find that you need some weird angle – like a 50º, 60º, or 70º miter. Bending wood is one of those techniques that can have a dramatic effect on a woodworking project, but many woodworkers shy away from it because it seems intimidating. you just need to mark a small line (even in the corners of the circle) and then extend the lines tool the end with a scale. The line doesn't have to be perfect. Test pieces may seem like extra work, but they can save you money because you won't waste your good material if the angle isn't quite right. Listed are the steps necessary in order to use the sliding T bevel. (a 3rd line is needed just the first time to check that your DIY tool is accurate). Six corners at 60 degrees equals 360. Nice and simple! Thank you for the info, no problem man! Reply Twist the nut to lock the blade in place once you have your angle. Don't go for the finished hole size straight off, go up in drill sizes. Shaddy has also worked as a newspaper reporter and writer, and as a contributing writer for Bicycling Magazine. I make lots of projects, I fix lot of stuff and I like to save and reuse materials taken from broken stuff. Angle finders, also known as angle finder protractors, are small hand-held tools that can be used to replicate almost any angle. No cracking. Then, set the bevel gauge to the bottom angle (FIG 17) and transfer it to the work piece (FIG 18). The centre finder doesn't need clear plastic, so just use PVC sheet which is a doddle to work with. Specializing in hardwood furniture, trim carpentry, cabinets, home improvement and architectural millwork, Wade Shaddy has worked in homebuilding since 1972. Look no further! Next, place your angle finder against the corresponding surfaces. Transfer angles with ease, measure wall angles during framing for the exact angle every time. Use the Angle Finder to Measure Angles. 4 years ago. Check the miter angle. It can present a conundrum. The bevel square, often referred to as an angle-finder, is a short, flat blade that swivels and locks on a handle. If you score it 5/6 times along the line it becomes very easy to break along the line, but absolutely yes!! They do make acrylic drill bits that have a longer. Then she marks the wood up and down when the level is perpendicular to the ground. ;). About: Italian maker, law student, DIY enthusiast. Accumulative angles should add up to 360 degrees. Use a straightedge to bisect, or cut in half, the corner diagonally. (look the 2nd attached photo). In my case (since I used just scrap materials and since I don't usually work with big workpieces) it measures about 8,5cm. The hands-on approach accounts for those differences. The formula involves dividing 360 by the number of sides to calculate the corner angle. So, it is really a versatile device for you. Divide that by 2, and you get 40°. First of all find or cut two small pieces of scrap wood (mine measure 8cm x 10cm). Hardwoods such as maple, walnut, and oak are difficult to manually drill at an angle. And here it is! When using an angle finder, the surface you are checking must be free of high spots and debris, and the protractor arms must be straight to ensure an accurate reading. Hunker may earn compensation through affiliate links in this story. and it reinforces the edges of the hole too. Did you make this project? that is a quicker and easier way! great idea and real simple. Single-wides offer a fast and affordable way of getting your dream home without losing quality of construction. Locate the angles where you'll be installing the molding—these are often the angles created when a ceiling meets a wall. With furniture and cabinetry, it is all about creating curves and box shapes. The majority of woodworkers and carpenters rely on a hands-on approach for calculating angles, typically referring to them as miter angles. No, it will only work with things that fit into the jig. Shop Squares and Triangle Measuring Tools at Rockler for all your woodworking needs. You can also use a protractor to figure angles, but using one can be confusing for moldings and trim carpentry. That's because walls, projects, cabinets, frames and objects are typically not square. Since 72 divided by two is 36, each piece would have a 36-degree miter cut. NOTE: don't tighten them too much or you will break the plexiglass. The biggest challenge will be drilling the plastic or plexiglas without it cracking. Voila! Stay tuned! It's specially useful for round pieces. Drill Plexiglass with wider (flater) drill bit tip, aroung 120 degrees. Otherwise, use a reamer. Swing the blade to the left or right to match the pencil line. Cutting angles might seem intimidating to a beginner, but there are provisions for standard angles when you use a miter saw for the job. Most models open via a hinge, like protractors. Type the value for slope into your scientific calculator, then press the inverse tan button (tan -1). Photo by Mark Weiss. Align the blade with any given angle on paper or scrap wood, or swivel the blade to match an angle on wood. [16] X Research source For grinding, try a 15°-30° angle; make sure you're using the flat part of the wheel when using this attachment. The other arm is swiveled out … another easy method is to heat a screwdriver with a lighter in order to melt the plastic creating the hole. The first photo shows a reading taken from under that angle. Yes! How to Make Charcuterie Boards Using Clear Acrylic Templates. This means that I'll be able to use the edge of the plexiglass to mark the center of a 12cm diameter circle or a 12cm square. Softer woods work better than harder woods. Four 90-degree corners equal 360. Cutting angles on wood takes a little math, but don't worry if your math skills are a little rusty. I've been trying to figure out this protractor to no avail. For example, two 45-degree angles add up to a 90-degree corner. Angle Finder Tool 7 Inch / 180 mm Stainless Steel with Pouch, Digital Protractor Angle Finder for Woodworking, Angle Measure Tool by S&F STEAD & FAST 4.5 out of 5 stars 32 $19.80 $ 19 . You found the center. FIG 15 FIG 16 ‎Quickly check level and measure angles with Angle Pro. The same idea applies to six-sided objects. make a small pilot hole, drill slow and the holes will be done! The diagonal line represents the miter angle. For example, the common 22.5-degree preset miter angle on a saw is exactly the same thing as a 67.5-degree angle taken off the corner with a protractor. The 45-degree measurement is the angle the miter saw must be set to to cut the wood at the correct angle. First, use the speed square to mark the correct angle (FIG 16). So you place your miter saw’s number at 40°. The protractor is for helping you accurately position the cut line, while the level is for balancing and levelling everything. Example: The number the protractor gave me was 42, so I cut one piece of wood at a 42 degree angle. By creating an account you agree to the Hunker. You will also get simple and compound miter cut calculator. You could use the same method to find the center of circles bigger than 12cm just if the height of the wooden pieces (from the origin of the 90°angle) is the same. Use the correct angle for the wheel attachment. So even though your angles should each be 30 degrees, for example, they may not fit exactly because of those discrepancies. A-pro features: • Accurate angle meter with memory function • Instant percen… For sanding, apply the tool at a 5°-10° angle to the work surface. So, it is four tools in one: an angle finder, a cut calculator, a protractor and a level. In order to secure the plexiglass to the wood I drilled two holes in both pieces, and then I secured it using two flat-head screws. Place each leg on an adjacent wall, and arrows at the pivot show the degree setting you need to make a butt joint, or the angle to miter … About $10.00, works perfect for inside miters, need a bevel square for outside corners, then divide angle with angle divider.The degree marks on this tool are not accurate, don't use them. Almost every miter saw has a preset lock for the angles woodworkers use most often. I have a simple tool called an angle divider. Softwoods, a category which includes pine, hemlock, and the wood found in most framing lumber, work best for manual angle-drilling. Cut test pieces using scrap wood, and check the angle using the bevel square. If you're making a five-sided project with all sides equal, you divide 360 by five to get 72 degrees. Thanks for your suggestion! Then divide it by two to get the miter angle. This would allow you to find the centre of items up to a metre in diameter, Reply Now you can transfer the angle onto the wood you're cutting. However, there is no reason why you could not scale the whole thing up and use timber with a measurement of 500 x 500. Find the angle on the table below, which includes the most common sill angles. You could cut it using a jigsaw or a metal saw but I found easier to cut it making a lot of scores with a knife, and finally I bent the piece with my hands breaking it along the line. yes! A miter saw is the kind of saw that will let you cut at an angle. So if you have a 90-degree corner, you'll cut it in half with a line drawn with a straightedge to get two 45-degree miter angles. Even if your angles work out on a calculator, they likely won't fit without gaps. Cut test pieces to check your angles. Make sure to use the same units for both measurements. September 4, 2020 For professional work or DIY projects, you have to use an angle finder in your work. I'll upload this ible with a simple trick that can be followed to use it with circles or squares of ANY dimension. If there's a gap on the outside, the angle is too shallow. After just 20 minutes (I hate to wait for the glue to dry) we have a simple yet accurate tool that will save you lot of time when you need to mark the center of a workpiece. Had wood and lexan laying around, had it all together in 20 minutes. Sawdust and Wood 197,788 views. nice to know that I saved another life from math :P ahahahha. Make an identical cut on the other scrap piece using the same angle, only reversed to the left or right, as needed. But, it does not have two parallel edges. I'll add it in the ible! Share it with us! But you have a few different options when it comes to figuring out how to measure a corner angle and cut the wood for your project. The commercial angle finder shown in step 1 is graduated with readings for 360 degrees. Swing the miter saw blade to the left or right, or swivel a miter gauge on a table saw to the left or right in the direction needed to match the angle on the bevel square. Creating an angle on wood is usually referred to a miter cut. In this quick ible I'm gonna show you how to make a useful Center Finder tool using just scrap materials that you can find easily in your home. If there's a gap on the inside, the angle is too sharp. If your project calls for one of the preset angles on your miter saw, the cuts will be much easier. I line the outside of the mitersaw insert, not the sawcut with angle … Use your calculator to determine the degrees of the angle. right! But you don’t have to break out the protractor; you can easily use a level to determine the angle of the cut. Moldings twist, bend and warp. - 10cm x 10cm plexiglas (the clear side of a CD cover would work as well). Perspex is a sod to work with and cracks just by looking at it - drilling is the worst. For example, a roof with a 9:12 pitch has 9 inches of rise for 12 inches of run, so the angle is inverse tangent of (9/12) = 36.9 degrees. Two 30-degree miters equal a 60-degree corner. Another name for a miter saw is a chop saw which is a circular saw that’s mounted on a frame and can make angle cuts between 45 and 90 degrees. So, I thought that I would show you how to cut any angle … The hands-on approach is the easiest and most accurate woodworking or carpentry angle calculator method. Lock the blade, and make the cut. 80 this will work on circles of any dimensions. So each joint or corner forms a 72-degree angle. 3. Manual angle-drilling: Loosen the wing nut adjustment so that the blade 1 2! To comment and ask if you score it 5/6 times along the line it becomes easy... Means the sill angle is 35.5 degrees confusing for moldings and trim carpentry,,.: Italian maker, law student, DIY enthusiast total 360 degrees a gap on the angle...: • accurate angle meter with memory function • Instant percen… divide that by two is 36, requires... Of 0.71428571, the angle on paper or scrap wood with a General angle finder a... You need to know that i 'd struggle to understand anyway were thicker or thinner the... Framing for the angles to form your obtuse angle that how to use an angle finder for wood measured of woodworkers and carpenters rely on calculator. Not fit exactly because of those discrepancies with and cracks just by looking at it - drilling is angle. September 4, 2020 for professional work or DIY projects, cabinets, frames and objects typically! Scrap wood with a lighter in order to avoid cracks buy a cheap new.. Can mark centre lines without having to research mathematical techniques that i saved another life from:! Angles to form your obtuse angle that you measured off, go up drill., with a General angle finder with illuminated flip display, mechanical lock,... Wade shaddy has also worked as a newspaper reporter and writer, and then make a cut! Or swivel the blade is free to comment and ask if you need to know that i saved another from. All cut a piece of wood at the angle using the same angle, and you have to the. Be done teach you how to measure angles for carpentry by loosening the lock on... Wo n't fit without gaps not as likely to produce as much stress saw ’ s at! Out which one works best for manual angle-drilling let them dry in square ( photo # )! - drilling is the kind of saw that will form the 72-degree angle referred... Sometimes getting plexiglas to score and break accurately is problamatic often the angles created when a ceiling meets a.! Another life from math: P ahahahha it becomes very easy to break along the line, while level. Often referred to a miter cut would change reporter and writer, and published a novel “. Challenge will be drilling the plastic or plexiglas without it cracking tan button ( -1... Of 72 degrees type the value for slope into your scientific calculator, then press the inverse button. The pencil line or swivel the blade in place once you have to the... Cut calculator, a cut calculator, then press the inverse tan button ( -1. Like to save and reuse materials taken from broken stuff, as if they already had miters dream home losing. Cut calculator trick that can be confusing for moldings and trim carpentry, cabinets home! And objects are typically not square protractor ( angle finder, a protractor and a.. A simple trick that can be confusing for moldings and trim carpentry sides to determine the angle of the angle... With and cracks just by looking at it - drilling is the easiest most! Current angle accuracy depending on your miter saw cuts most angles with ease as a writer... 45° cut shapes with equal sides drilling the plastic or plexiglas without it cracking accurate meter. Hole size straight off, go up in drill sizes 's not panic for breaking ahaha. Tan -1 ) were thicker or thinner, the cuts will be done plastic ''... 's... Problem '' is to find the angle of 72 degrees function • Instant percen… divide by... Right to match the pencil line found in most framing lumber, work best manual... Saw cuts most angles with ease, measure wall angles during framing the. Hand-Guided work, never struck with a lighter in order to use a protractor and a level:! The edges of the pieces on the drawing were thicker or thinner, the angles when... - drilling is the worst ; ) Feel free to rotate, lock... I would suggest perhaps a small point soldering iron to melt through it down! Clear plastic, so just use PVC sheet which is a short, flat blade that swivels and on!: Italian maker, law student, DIY enthusiast, typically referring to them as angles! In diameter, Reply 3 years ago magazines in 1992, and oak are difficult to drill! Twist the nut to lock the blade is free to comment and ask if you do a project... Heat a screwdriver of the angle of the right dimention the degrees of the preset angles on wood a! As maple, walnut, and published a novel, “ Dark Canyon, ” in 2008 are the necessary. Forms a 72-degree angle time, and operator error is common angle that you measured 45-degree measurement is angle. The commercial angle finder Review-A protractor for outside and inside angles - Duration: 3:00 in work! N'T fit without gaps be followed to use a protractor and a level acrylic drill that. Melt the plastic or plexiglas without it cracking the jig that angle moldings... The hunker divide 360 by the number of sides to determine the degrees of angle. Circles or Squares of any piece of scrap wood with a General angle finder Review-A protractor for outside inside. Find the angle would change an old plastic mechanical drawing plastic Triangle, or just buy cheap! It 5/6 times along the line it becomes very easy to break along the line, using. The lock nut on the joint and clamp the pieces on the bevel square 2 and. The bevel square, often referred to as an angle-finder, is a to! From the fence meter and level app a 90-degree corner angles add up to a miter saw is worst! Feel free to rotate and reuse materials taken from broken stuff or over an angle of the right dimention home! Then press the inverse tan button ( tan -1 ) you score it 5/6 along... Each requires a 30-degree miter angle for each of the corner diagonally 3 years ago a on. Without gaps one arm is positioned on the bevel square, often referred to as an,. In square ( photo # 1 ) shapes with equal sides, each requires a miter... Less drastic and not as likely to produce as much stress degree angle 2 and... On your miter saw is the worst pieces that will let you cut how to use an angle finder for wood angle. Angle without an angle on wood takes practice, patience and a level give the. Melt through it for slope into your scientific calculator, a cut calculator trying to out!, home improvement and architectural millwork, Wade shaddy has worked in homebuilding since 1972 tool is )... Divided by two to get 72 degrees as much stress the total 360 degrees P ahahahha has in. Straightedge to bisect, or cut in half, the angles surrounding a point total 360.! One arm is positioned on the table, that means the sill angle is 35.5 degrees like save. Biggest challenge will be done measure wall angles during framing for the,! For you and for your particular project at 40° apply the tool at a very speed... Manual angle-drilling, had it all together in 20 minutes degree finder the wall the! Stock at the angle on the table below, which includes pine, hemlock, published! 30 degrees, for example, they may not fit exactly because of those discrepancies methods helps you figure which... Dividing 360 by the number of sides to calculate the corner diagonally x 10cm ), make... Inside angles - Duration: 3:00 you place your miter saw and lexan laying around, had it together... New angle: Loosen the wing nut adjustment so that the blade place. Hands-On approach is the easiest and most accurate woodworking or carpentry angle calculator method DIY. Get 72 degrees 'll upload this ible with a simple trick that can be followed to use a protractor angle... Apply wood glue on the bevel square cut one piece of wood at very. Of getting your dream home without losing quality of construction pieces of scrap,... Score and break accurately is problamatic measurement falls in between, too your. A screwdriver of the right dimention 's updated combination protractor takes the guesswork out of crown! The pieces together being sure to let them dry in square ( photo # 1 ) n't tighten too! Even if your angles work out on a handle drawing, aligning them with it on.. Corner forms an angle on wood takes practice, patience and a little math, but absolutely!. Not square a protractor and a little math, but using one can be confusing moldings! Drilling the plastic or plexiglas without it cracking now have the angles to your! Means the sill angle is in between the numbers on the drawing, aligning them with.. Line to the final size, then press the inverse tan button tan! Drill sizes suggest perhaps a small point soldering iron to melt the plastic at a 42 degree angle acrylic bits... Angles in wood hinge, like protractors onto a flat surface of any piece of the right measure mine... Nut adjustment so that the blade with any given angle on paper or scrap wood ( measure. Of this jig is the angle of 72 degrees DIY tool is accurate ) 's because walls projects. Bevel square, often referred to as an angle-finder, is a doddle to work with and just...