## Selection of Views in Orthographic Projections

For describing any object completely through its orthographic projections, it is important to select a number of views. The number of views required to describe any object will depend upon the extent of complexity involved in it. The higher the symmetry, the lesser the number of...

## Position of the Object Relative to the Planes of Projection

It is important to understand the significance of the position of the object relative to the planes of projection. To get useful information about the object in the orthographic projections, the object may be imagined to be positioned properly because of the following facts : Any line...

## What is Projection?

Any object has three dimensions, viz., length, width and thickness. A projection is defined as a representation of an object on a two dimensional plane. The projections of an object should convey all the three dimensions, along with other details of the object on a...

## Accountant Job Satisfaction

While accounting may appear to be a career that lacks in overall employment satisfaction due to a perceived tediousness, there are studies and surveys that suggest that crunching numbers may be more fulfilling than individuals may speculate. According to a U.S. News and World Report...

## Difference Between Drawing and Engineering Drawing

A drawing is a graphic representation of a real thing. To draw something as a figure by means of lines expressing some ideas on the paper is known as a drawing. The purpose of the drawing is to define and specify the shape and size...

The true projection of a threaded portion of a part consists of a series of helices and it takes considerable time to draw them. Hence it is the usual practice to follow some conventional methods to represent screw threads. Screw thread nomenclature figure below shows the...

## Full Section | Half Section | Auxiliary Section Views

This post has been updated. Orthographic views when carefully selected, may reveal the external features of even the most complicated objects. However, there are objects with complicated interior details and when represented by hidden lines, may not effectively reveal the true interior details. This may...

## Designation and Relative Positions of Views

An object positioned in space may be imagined as surrounded by six mutually perpendicular planes. So, for any object, six different views may be obtained by viewing at it along the six directions, normal to these planes. Figure “Designation of the views” shows an object...

## Methods of Obtaining Orthographic Views

View From the Front The view from the front of an object is defined as the view that is obtained as projection on the vertical plane by looking at the object normal to its front surface. It is the usual practice to position the object...

## Importance of Dimensioning in Machine Drawing

A drawing of a component, in addition to providing complete shape description, must also furnish information regarding the size description. These are provided through the distances between the surfaces, location of holes, nature of surface finsih, type of material, etc. The expression of these features...

## Drawing Conventional Representation

Certain draughting conventions are used to represent materials in section and machine elements in engineering drawings. Materials As a variety of materials are used for machine components in engineering applications, it is preferable to have different conventions of section lining to differentiate between various materials....

## Drawing Sections

In order to show the inner details of a machine component, the object is imagined to be cut by a cutting plane and the section is viewed after the removal of cut portion. Sections are made by at cutting planes and are designated by capital...

## Lines Used in Graphical Representation of Objects

Lines of different types and thicknesses are used for graphical representation of objects. The types of lines and their applications are shown in below table. Typical applications of different types of lines are shown below. Thickness of Lines Two thicknesses of lines are used in...

## Principles of Drawing

Engineering drawings are to be prepared on standard size drawing sheets. The correct shape and size of the object can be visualized from the understanding of not only the views of it but also from the various types of lines used, dimensions, notes, scale, etc. To provide...

## Classification Of Drawings

Machine Drawing It is pertaining to machine parts or components. It is presented through a number of orthographic views, so that the size and shape of the component is fully understood. Part drawings and assembly drawings belong to this classification. An example of a machine...

## Engineering Drawing Conventions and Abbreviations

Conventions make the drawing simple and easy to draw. But it is difficult for untrained eyes to understand it easily. Drafting time should be reduced to cut drafting cost. Time must be saved in drafting. It will take a lot of time to draw the...

## Objective, Significance and Utility of Engineering Drawing

A drawing is a graphic representation of a real thing. To draw something as a figure by means of lines expressing some ideas on the paper is known as a drawing. The purpose of the drawing is to define and specify the shape and size...

## Safety Precautions to be Taken While Using WoodTurning Lathe

We are getting near the point when we can put a piece of wood in the lathe, switch on and start practising. But before we do that there are a number of important points regarding safety which need to be considered. It should be noted,...