Omar Khalid
A French curve is a plastic curved drawing tool used to draw smooth curves. It is a template composed of various curved segments and is usually made from plastic, wood, or metal. It is placed on the drawing material, and a pencil, knife, or another implement is traced around its curves to produce the desired result. French curves are used in manual drafting and fashion design to draw curves of varying radii that cannot be drawn with compasses.
| Characteristics | Values |
|---|---|
| Name | French Curve |
| Composition | Metal, wood, plastic, celluloid |
| Use | Drawing smooth curves of varying radii |
| Use Case | Manual drafting, fashion design |
| Inventor | German mathematician Ludwig Burmester |
| Alternative Names | Burmester (curve) set |
| Variants | Westcott Flexible Curve Drawing Tool, Mr. Pen French Curve, Yosogo French Curve Ruler |
| Variants' Features | Adjustable scale, bevelled inking edges, smooth curves, clear transparent plastic, different shapes |
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French curves
Overall, French curves are a valuable tool for anyone looking to draw precise and sophisticated curves in their artwork, designs, or technical drawings. They are simple to use, durable, and versatile, making them a popular choice for professionals and amateurs alike.
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Flat splines
A flat spline is a flexible ruler used for drawing smooth curves in manual drafting. It is usually made of rubber or plastic and coated with a metal "backbone". This allows the ruler to be smoothly shaped to follow a desired curve and facilitates the drawing of a smooth line between initial reference points.
Spline devices have been used to design shapes for pianos, violins, and other wooden instruments. The Wright brothers used a spline to shape the wings of their aircraft.
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Rulers
One type of plastic ruler is the French curve ruler, which is used to draw curves that cannot be drawn with compasses. French curves are made of plastic or celluloid, and they come in a variety of shapes, such as ovals and circles, allowing the user to draw a wide range of sophisticated shapes. They are typically transparent and flexible, making it easy to trace and draw intricate designs. French curve rulers are available in sets of 3 or 6, with each set offering different curve shapes and sizes.
Another type of plastic ruler is the flexible curve ruler, which can be smoothly shaped to follow a desired curve, allowing the user to draw a smooth line between initial reference points. One example is the Westcott 24" Flexible Curve Drawing Tool, which is covered with clear transparent plastic and tough vinyl for durability. It has one raised edge to prevent ink from marking the tape and is ideal for measuring length along curved edges.
In addition to these specialised rulers, there are also geometry templates made of clear plastic with cut-out shapes and curves. These templates are commonly used by primary and secondary school students and include length and angle measurements.
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Geometry templates
A geometry template is a piece of clear plastic with cut-out shapes and curves used mainly by primary and secondary school students. They are used to draw curves that cannot be drawn with compasses. A faint freehand curve is first drawn through the known points, and then the longest possible curve that coincides exactly with the freehand curve is found using the French curves. Finally, a neat continuous curve is drawn with the aid of the French curves.
French curves are made of wood, plastic, or celluloid. They are used to draw a wide range of sophisticated shapes and help to boost your portfolio of artwork and designs. The set of three curves are made out of plastic and come in a clear plastic protective wallet, making them easy to carry around.
There are also geometry templates with a protractor, standard and metric rulers, number lines, and perpendicular-parallel lines. These templates are three-hole punched so they can fit perfectly in a binder and be taken anywhere.
Flexible curve drawing tools are also available, which are covered with clear transparent plastic and tough vinyl for durability. They are ideal for measuring length in curved edges and can be used to create a wide array of designs.
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Flexible curve rulers
A flexible curve ruler is a handy tool for drawing and measuring curved shapes. It is a type of spline, a flexible ruler usually made of rubber or plastic with a metal "backbone". This allows the ruler to be shaped smoothly to follow a desired curve, enabling the drawing of a smooth line between initial reference points. Flexible curve rulers are also known as French curves when made of wood, plastic, or celluloid. They are used for drawing curves that cannot be drawn with compasses.
The Westcott 24" Flexible Curve Drawing Tool is a highly-rated flexible curve ruler available on Amazon. It is covered with clear transparent plastic and adjusts quickly from one shape to another. One side of the ruler is divided into millimetres, while the other is graduated into inches, making it ideal for measuring length in curved edges. The ruler also has a raised edge to prevent ink from marking the tape.
Another option for a flexible curve ruler is the Truflex II Flexible Curves by Alvin Drafting, LLC. This 40-inch lightweight aluminium flexible rule is easy to shape and holds any curve firmly for accurate drawings. The durable material won't warp over time, ensuring long-lasting reliability. The ruler has inking edges for pen and marker use and flat edges on both sides for easy pencil drawing. The inch graduations are colour-coded in black, while the metric graduations are coded in red for quick individual identification.
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Frequently asked questions
A plastic curved drawing tool is called a French curve.
A French curve is used to draw smooth curves of varying radii. It is placed on the drawing material and a pencil, knife or another implement is traced around its curves to produce the desired result.
French curves are usually made of wood, plastic or celluloid.
French curves are available on Amazon and are sold by brands such as Westcott and Yosogo.
