Question 1

List the steps in making oblique sketches with straight lines.

Accepted Answer

STEP 1 Select one view of the object that gives most of the desired information. 
STEP 2 Draw light horizontal and vertical baselines. 
STEP 3 Lay out the edges of the die block in the front view from the base lines. All vertical lines on the front face of the object will be parallel to the vertical base line; all horizontal lines will be parallel to the horizontal base line. All lines will be in their true size and shape in this view. STEP 4 Start at the intersection of the vertical and horizontal base lines and draw a line at an angle of 45° to the base line. This line is called the oblique base line. 
STEP 5 Draw the remaining lines for the right-side and top view parallel to either the oblique base line or to the horizontal or vertical base lines, as the case may be. Because these lines are not in their true size or shape, they should be drawn so they appear in proportion to the front view. 
STEP 6 Place dimensions so they are parallel to the edge lines. 
STEP 7 Erase unnecessary lines. Darken object lines to make the sketch clearer and easier to interpret.

Question 2

Describe right and left oblique sketches.

Accepted Answer

In many cases, the left-side of the object must be sketched because it contains better details. In these instances, the oblique base line or axis is 45° from the horizontal base line, starting from the left-edge of the object. The same principles and techniques for making oblique sketches apply, regardless of whether the object is drawn in the right or left position.

Question 3

Describe an oblique sketch and where they are used most often.

Accepted Answer

An oblique sketch is a type of pictorial drawing on which two or more surfaces are shown at one time on one drawing. The front face of the object is sketched in the same manner as the front view of either an orthographic sketch or a mechanical drawing. All of the straight, inclined, and curved lines on the front plane of the object will appear in their true size and shape on this front face. Because the other sides of the object are sketched at an angle, the surfaces and lines are not shown in their true size and shape. Oblique sketches are frequently used in cabinet making, woodworking, and construction.

Question 4

A(n) ____ is a line that drawn at an angle of 45° to the base line of an image at the intersection of the vertical and horizontal base lines.

Accepted Answer

A)  center line 
B)  midpoint line 
C)  oblique base line 
D)  primary diagonal line 
A)  center line 
B)  midpoint line 
C)  oblique base line 
D)  primary diagonal line

Question 5

A(n) ____ is a type of pictorial drawing on which two or more surfaces are shown at one time on one drawing.

Accepted Answer

A)  oblique sketch 
B)  isometric sketch 
C)  orthogonal sketch 
D)  perspective sketch 
A)  oblique sketch 
B)  isometric sketch 
C)  orthogonal sketch 
D)  perspective sketch

Question 6

In the accompanying figure, the items identified with a number 1 are the ____.

Accepted Answer

A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines 
A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines

Question 7

Because the top and side views of a circle or arc located on the front face of an oblique sketch are distorted, a circle or arc will be ____ in these views.

Accepted Answer

A)  shortened 
B)  distorted 
C)  rounded 
D)  elliptical 
A)  shortened 
B)  distorted 
C)  rounded 
D)  elliptical

Question 8

List the steps in sketching circles in oblique.

Accepted Answer

STEP 1 Draw horizontal, vertical, and ob

Question 9

In the accompanying figure, the items identified with a number 3 are the ____.

Accepted Answer

A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines 
A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines

Question 10

In the accompanying figure, the item identified with a number 4 is the ____.

Accepted Answer

A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines 
A)  midpoint of triangles 
B)  diagonals and center lines 
C)  arcs through midpoints 
D)  base lines

Question 11

Describe foreshortening.

Accepted Answer

When a line in the side and top views is

Exam 41: Oblique Sketching

List the steps in making oblique sketches with straight lines.

Describe right and left oblique sketches.

Describe an oblique sketch and where they are used most often.

A(n) ____ is a line that drawn at an angle of 45° to the base line of an image at the intersection of the vertical and horizontal base lines.

A(n) ____ is a type of pictorial drawing on which two or more surfaces are shown at one time on one drawing.

In the accompanying figure, the items identified with a number 1 are the ____.

Because the top and side views of a circle or arc located on the front face of an oblique sketch are distorted, a circle or arc will be ____ in these views.

List the steps in sketching circles in oblique.

In the accompanying figure, the items identified with a number 3 are the ____.

In the accompanying figure, the item identified with a number 4 is the ____.

Describe foreshortening.

Bases for Blueprint Reading and Sketching

The Alphabet of Lines and Object Lines

Hidden Lines and Center Lines

Extension Lines and Dimension Lines

Projection Lines, Other Lines, and Line Combinations

Three-View Drawings

Arrangement of Views

Two-View Drawings

One-View Drawings

Auxiliary Views

Size and Location Dimensions

Dimensioning Cylinders, Circles, and Arcs

Size Dimensions for Holes and Angles

Location Dimensions for Points, Centers, and Holes

Dimensioning Large Arcs and Base Line Dimensions

Tolerances Fractional and Angular Dimensions

Tolerances Unilateral and Bilateral, Decimal Dimensions

Interchangeable Parts, Allowances, and Classes of Fit

Representing and Dimensioning External Screw Threads

Representing and Specifying Internal and Left-Hand Threads

Dimensioning Tapers and Machined Surfaces

Dimensioning With Shop Notes

Metric System Dimensioning and Iso Symbols

First-Angle Projection and Dimensioning

Metric Screw Threads, Dual Dimensioning, and Tolerancing

Cutting Planes, Full Sections, and Section Lining

Half Sections, Partial Sections, and Full Section Assembly Drawings

Datums Ordinate and Tabular Dimensioning

Geometric Dimensioning, Tolerancing, and Datum Referencing

Caddcamcim and Robotics

Welding Symbols, Representation, and Dimensioning

Surface Development and Precision Sheet Metal Drawing

Detail Drawings and Assembly Drawings

Sketching Horizontal, Vertical, and Slant Lines

Sketching Curved Lines and Circles

Sketching Irregular Shapes

Sketching Fillets, Radii, Rounded Corners, Edges, and Shading

Freehand Vertical Lettering

Freehand Inclined Lettering

Orthographic Sketching

Isometric Sketching

Perspective Sketching

Pictorial Drawings and Dimensions

Two-Dimensional and Three-Dimensional Cad Sketching

Proportions and Assembly Drawings

Filters