What do the arrows in a cutting plane line indicate?
Cutting plane lines are used to indicate where the section or cut is made. Arrowheads on a cutting plane line indicate the direction of sight.
What is the difference between a half and a full section?
Remember that only one fourth of the object is removed with a half section, whereas half of the object is generally removed with a full section.
What is the difference between section lines and cutting plane lines?
The section-lined areas are those portions that have been in actual contact with the cutting-plane. Half Section is used toshow the exterior and interior of the part in the same view. The cutting-plane line cuts halfway through the part and removes one quarter of the material.
What are section lines used to indicate?
Section Lines: Used to indicate where the cutting plane cuts the material. Section lines are thin and the symbols (type of lines) are chosen according to the material of the object. Section lines are generally drawn at a 45° angle.
When should a leader line end in an arrow?
This can be a dot if the line ends within the outline of the part, an arrow if the line touches the outline or centre line of a feature or without either an arrowhead or a dot if the line touches a dimension. Examples of leader lines with arrowheads and dots are shown in the vice assembly and the movable jaw drawings.
What is the name of the hatch setting that controls the density of the hatch pattern?
In general, the scale of a hatch determines the density of that hatch when placed in your drawing. Hatch scale is an important, and often-overlooked, setting.
What is the difference between the section line and the centerline?
Centre lines are drawn to indicate the exact centre of a component being drawn. They are made from a series of lighter long and short dashes. Section lines are special lines placed on a drawing which indicate the area of the drawing through which an imaginary cut has been made to reveal internal details.
What is the difference between an object line and construction line?
The purpose of construction lines is to give you an outline of what you are about to draw. Object lines are used for outlining the shape and giving it its main features.
Which line is used to show the position of cutting plane in object?
Section lines are used to show areas that have been cut by the cutting plane. Section lines are grouped in parallel line patterns and usually drawn at a 45o angle. The line type is usually continuous and the line weight is thin (0.3 mm).
Why hidden lines and center lines are used?
Hidden lines in a drawing represent the edges where surfaces meet but are not directly visible. Hidden lines are omitted from pictorial drawings unless they are needed to make the drawing clear.
What center line means?
Definition of centerline
: a real or imaginary line that is equidistant from the surface or sides of something.
Which line type is used to represent center line in the drawing?
Long chain lines are used to indicate center line, cutting lines. 2.
What is the difference between visible line and hidden line?
A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object. A hidden line, also known as a hidden object line is a medium weight line, made of short dashes about 1/8” long with 1/16”gaps, to show edges, surfaces and corners which cannot be seen.
Which of the lines below is used to indicate hidden lines?
It is standard practice to use dashes to represent any line of an object that is hidden from view.
What do hidden lines represent on Multiview drawings?
would appear as hidden lines in an orthographic multiview drawing? These are the three views associated with the object you just built. Hidden lines are dashed lines used to represent internal features that are obscured by the object.
What line refers to as visible lines?
Visible lines are the edges or “outlines” of an object. They are drawn as solid lines with a thick/heavy weight.
What is viewing plane line?
viewing plane line. The line used to define an auxiliary view. If the line were projected through the drawing sheet to create a plane, this plane would define the view. The viewing plane line is displayed on the drawing sheet to show the orientation of the auxiliary view in relation to the principal view.
What is invisible line?
“Invisible” lines (or implied lines or imaginary lines) trace paths of motion across the visual field. Invisible lines are very powerful, yet may not affect everyone exactly the same way. Consider, for example, the symbolic or associative feelings/nuances of: Horizontal lines.
What are the difference between short lines and long lines in terms of drawing?
Short lines are drawn with finger movement while long lines are made with arm movement. Long lines, however, may be drawn in segments with very small spaces or gaps between segments. … Parallel lines may be vertical, horizontal, or inclined. Lines may be drawn in various thicknesses or weights with a soft pencil.
Why is it important to identify the different alphabet lines?
Why is it important to recognize the alphabet of lines? The lines in the Alphabet of Lines are used to describe shape, size, hidden surfaces, interior detail, and alternate positions of parts. Each conveys a particular meaning on the drawing.
How do you draw a hidden line?
What do you call the thin and dark line used to show the starting and ending of dimension?
EXTENSION LINE – Thin and dark line use to show the starting and ending of dimension.
What is a continuous line drawing called?
contour drawing, version of outline drawing, in which the artist, looking closely at the contour of an object, transfers it in one continuous line to paper without looking down to see what he is doing, except when he needs to place an internal feature such as an eye.
Which line on a drawing should be the thickest?
2.4.5 Cutting Plane Lines
The direction of the cutting line is shown with a line called a cutting plane lineHeavy dashed line that shows a theoretical cut through an object.. This is the thickest line that may appear on a drawing.