The stock is usually much thicker than the blade and is made from wood, metal or plastic. Traditional timber frame barn raising for a client in IndianaThis timber frame barn red woodworking square root project Wonkee Donkee Tools. Engineer's squareor machinist square. All joinery is cut to this inner timber, squuare usually shares two adjacent square faces with the outer irregular timber. Supply Hub. Squares can be checked for accuracy against a known reference, such as a square or piece of machinery that is known to be accurate sqaure against a cylindrical square.

Laying out where to cut mortise and tenon joints for a timber frame requires precise measurements to achieve a good, tight fit. On freshly milled and planed S4S timbers that are nice and square this is a pretty straight forward process. All layout lines can be measured and marked off the edge of the timber. This method is called edge rule or mill rule. Antique, reclaimed and hand hewn timbers are irregular and uneven, so they necessitate different methods for lay out.

On this set of hand hewn timber frame trusses we used a combination of snap line square rule and plumb line scribing techniques. Seeing the original mortise and tenon pegged joints, and axe marks on these antique timbers was fascinating. All joinery is cut to this inner timber, which usually shares two adjacent square faces with the outer irregular timber. A reference corner was selected on each end of the bottom cord and rafters.

This point is called the arris. A level line was drawn on the ends horizontally, and a plumb line was drawn down vertically. Chalk lines were snapped down all four faces of the timber, connecting the lines. Then these chalk lines were used for measuring all of the joinery layout. The stock is usually held against the edge of a workpiece or drawing board and the tongue is then used as a straight edge for making a mark, or as a reference to check the accuracy of an angle.

Wooden try squares have survived from Ancient Egypt and Ancient Rome and can be seen in art from the time. From the 18th century squares began to be manufactured in factories , prior to that they were typically made from wood and were often made by the tradesmen themselves.

There are a number of different types of square used for a variety of different industries and purposes:. Different industries and applications have different requirements for the accuracy of squares. Some squares are manufactured to meet regulated standards of accuracy, such as British Standards BS for engineering squares, and BS for try squares. A square can become inaccurate over time through common use and abuse, such as the edges becoming worn or the square being dropped or mistreated.

The materials, most notably wood, can also vary with changes in temperature and humidity. Squares can be checked for accuracy against a known reference, such as a square or piece of machinery that is known to be accurate or against a cylindrical square. A bright light or feeler gauges can be used to check for gaps between the square and the object being referenced. Through symmetry squares can also be checked against themselves. One method for L-shaped squares illustrated is to hold the square against a reliable known straight edge, a line is struck using a marking knife or sharp pencil, the square is then flipped over and from the same point another line is struck.

If the square is accurate there should only be a single line visible. There are a number of methods for correcting an inaccurate square by hand. For example, wooden blades can be corrected using a hand plane and sandpaper, while metal blades can be corrected using a file , emery cloth , or sandpaper. The square is incorporated into the most common Freemasonry symbol, the Square and Compasses. From Wikipedia, the free encyclopedia. Internet Archive. ISBN Popular Woodworking Magazine.

Retrieved Supply Hub. Retrieved 17 October The Anarchist's Tool Chest. OCLC Fundamentals of dimensional metrology Sixth ed. The Essential Guide to the Steel Square. The Woodwright's Shop. Season Episode 6. Public Broadcasting Service. Lost Art Press. WOOD Magazine. Technical Graphics. Popular Mechanics. The Family Handyman. Family Handyman. This Old House. Topographic Drafting. Government Printing Office. Paul Sellers - A Lifestyle Woodworker.

Retrieved 18 October Wonkee Donkee Tools. Paul Sellers' Blog. Fine Homebuilding. Measuring and alignment tools. History Glossary Wood lumber. Frame and panel Frameless construction. Category WikiProject Woodworking Square Reddit Job Commons. Forming , fabrication , and finishing.

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