What is the purpose of construction lines? Object lines?

What is the purpose of a hidden line?

Hidden lines are used to show surfaces that are not directly visible. All surfaces must be shown in all views. If an edge or surface is blocked from view by another feature, it is drawn using a hidden line .

What are construction lines in art?

Construction lines (also known as xlines) are temporary linework entities that can be used as references when creating and positioning other objects or linework. Construction lines are either circles or straight lines that extend to infinity in both directions.

What do the hidden lines of a product drawing show?

Hidden lines are used to show parts of the drawing that are hidden from sight in the view that is drawn. HIdden lines may be used to show details that are cut out of the bottom of an object and lines that may be visible when you look at the object from another view. Are drawn using altering short and long dashes.

What type of pictorial is shown in the first representation in Step 2 How can you tell?

The type of pictorial shown in the first representation in item 2 is oblique because the image is straight on.

What do hidden lines look like?

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. Sometimes they are used to make a drawing easier to understand.

What type of lines are used for hidden details?

Hidden line Hidden details are shown by a series of dashes making up a broken line . It is normal practice that you place a dash at the beginning of the hidden line and another at the end where it meets an intersecting line .

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How do you use construction lines?

Create a Construction Line by Specifying Two Points Click Home tab Draw panel Construction Line. Find. Specify a point to define the root of the construction line. Specify a second point through which the construction line should pass. Continue to specify construction lines as needed. Press Enter to end the command.

What are extension lines?

Line Conventions, Continued Extension lines Extension lines are thin lines that extend from the object outline or point on the object to a place outside the image area. Extension lines define areas for dimensions.

What are expressive lines?

Expressive lines are curved, adding an organic, more dynamic character to a work of art. Expressive lines are often rounded and follow undetermined paths. Indeed, the sculpture seems to be made up of nothing but expressive lines , shapes and forms.

Can you dimension hidden lines?

Dimensioning to hidden lines should be avoided wherever possible. Use auxiliary cross sectional views instead. Longer dimensions should be placed outside all intermediate dimensions so that dimension lines will not cross extension lines .

What is the purpose of construction lines object lines quizlet?

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.

What are the 4 basic components of engineering drawing?

The main purpose of engineering drawings is to communicate to other engineers, machinists, etc. Dimensions have four basic components : Dimension Text. Dimension Line andArrows. Extension Lines. Gap.

What are the 3 pictorial drawings?

There are many types of pictorial drawings and these include isometric , oblique, axonometric and planometrics and the four drawings figures 164 – 167 illustrate the differences between them. Of these, isometric drawings are the most common.

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Why is it important to layout a multiview sketch with points and construction lines before you draw object lines?

3. Why is it important to lay out a multiview sketch with points and construction lines before drawing object lines ? So you don’t show wrong dimensions and your object lines line up in the intended ratio to the reference sketch . If drawing a “new” sketch , it is important so you don’t erase your construction lines .

What type of pictorial is shown in Step 6?

oblique pictorial