IND4-9 identifies a range of technologies and their intended uses
Decorative steel scrolls are ornamental elements that are made from steel and are often used in architectural applications to add a decorative touch to gates, fences, railings, balconies, and other metalwork. They are typically hand-crafted by skilled metalworkers and can come in a variety of designs, sizes, and shapes.
Decorative steel scrolls can be used on their own or in combination with other decorative elements such as fleur-de-lis, rosettes, or twisted bars to create a unique and eye-catching look. They are often finished with a coat of paint or powder coating to protect them from rust and corrosion and to enhance their appearance.
A file is a tool with a roughened surface that is used to shape, smooth, or remove material from a workpiece. The surface of a file is made up of small, sharp teeth that are angled in a specific way to create a cutting edge.
A "first cut" file is a coarse file with large teeth that are widely spaced apart. This type of file is used to quickly remove material from a workpiece, and is typically the first file used in a series of files to shape a piece of metal.
A "second cut" file is a medium-grade file with smaller teeth that are closer together than those of a first cut file. It is used to smooth out the marks left by the first cut file and to prepare the surface for finishing. The second cut file is also known as a "middle" or "intermediate" cut file.
A "smoothing" file is a fine file with very small teeth that are tightly spaced together. It is used to create a smooth, polished surface on a workpiece and is typically the last file used in a series of files. The smoothing file is also known as a "fine cut" file.
Jigs are commonly used in metalworking to ensure that parts are produced consistently and to exact specifications. For example, a jig can be used to hold a piece of metal in place while it is drilled, tapped, or cut to a specific size or shape. This ensures that each piece is produced to the same standard and that all parts fit together correctly when they are assembled.
Jigs can be made from a variety of materials, including metal, plastic, and wood. They can be simple or complex, depending on the specific application and the level of precision required. Some jigs are designed to be adjustable so that they can be used for multiple parts or for parts with different dimensions.
Overall, jigs are an essential tool in metalworking and are used to improve efficiency, reduce errors, and ensure consistent quality in the production of metal parts and components.
A painted metal finish is a type of surface finish that is achieved by applying paint or a coating to a metal surface. The paint or coating serves as a protective layer, helping to prevent the metal from rusting or corroding, and can also improve the appearance of the metal.
Enamel paints are commonly used for decorative purposes, and are available in a wide range of colors and finishes. They are durable and easy to apply, making them a popular choice for consumer goods and home decor.
Powder coating is a type of surface finishing process that involves applying a dry powder to a metal surface and then baking it in an oven to create a smooth, durable, and protective finish. The powder used in powder coating is typically made from a combination of resins, pigments, and other additives that are electrostatically charged to adhere to the metal surface.
Powder coating is known for its durability and resistance to chipping, fading, and corrosion. It is commonly used in a variety of industries, including automotive, aerospace, and construction, to protect metal parts and components from the effects of wear and tear, weather, and exposure to chemicals and other environmental factors.
IND4-3 identifies and uses a range of hand and machine tools to produce quality practical projects
Files are used to reduce uneven surfaces, such as those left by hacksaws or bench shears, and to produce surfaces with a fine finish.
Safety:
Never use a file without a handle, or with a handle that is loose, or badly fitting. The tang of a file can cause serious injury if driven into the hand.
Cross filing
Cross filing is done to quickly remove waste metal, but it leaves a surface scored with unsightly teeth marks and a burr (wire edge) on the far side.
When cross filing:
Place the edge to be filed in a horizontal position, a short distance (about 5 mm) above the vice jaws.
Take up a firm stance with feet apart.
Do not stand directly in front of the vice, but to the left of it, as shown,
Hold the file with both hands. Balance the pressure applied with each hand to prevent the file rocking endways
Process
As the file is pushed forwards, sweep it sideways to cover a considerable area of the surface.
It is good practice to change direction occasionally, but remember to change the position of the feet to suit.
File at a rate of 50 to 60 strokes per minute.
Apply pressure on the forward stroke, relax it on the return.
Do not allow the file to rock, or rounded surfaces will result.
Remove the bulk of the waste metal with a bastard file. Follow this with a second cut file, and then a smooth file to progressively produce a good finish.
Draw filing
Metal should be draw filed to remove cross filing marks and obtain a fine finish.
Use a smooth or another fine cut file, such as a mill file, for the purpose.
Hold the file flat across the surface and draw it backwards and forwards along the metal.
Place the index fingers on the file directly over the surface of the metal to prevent the file from rocking.
Removing burrs (wire edges)
Use a smooth file.
Hold the metal flat on top of, and close to, the edge of the bench.
Keep the file at a slight angle on the corner of the metal so that the tip of the file cannot scratch the top surface as it is pushed inwards and along the edge.
Filing a convex curve
Remove waste metal by filing straight across the edge in several places, each time removing a corner.
To obtain an even curve, keep the file horizontal and, as it is pushed forwards, twist the wrist, sweeping the file sideways over the curved edge of the metal.
Alternatively, to finish the curve, hold the file in line with the vice jaws and, as it is pushed forwards, rock it downwards at the handle end.
IND4-5 selects and uses communication techniques when designing, making and evaluating projects and ideas
IND4-2 applies a design process in the modification of projects
IND4-2 applies a design process in the modification of projects