Drawing tehniques

Question 1

what are scale drawings used for

Answer 1

to draw bigger or smaller things

Question 2

what does a scale of 1:2 mean

Answer 2

the drawing is half the size of the real object

Question 3

what does a scale of 2:1 mean

Answer 3

the drawing is twice the size of the real object

Question 4

what are assembly drawings

Answer 4

drawings that show how separate parts join together

Question 5

what are exploded diagrams

Answer 5

types of assembly drawings

Question 6

features of exploded diagrams

Answer 6

• always in 3D
• Product is drawn with each separate part of it moved out (like it’s been exploded)
• Each part of the product drawn in line with the part it’s attached to
• dotted lines to show where the part has “exploded” from

Question 7

what are orthographic drawings/ 3rd angle drawings

Answer 7

drawings that show 2D views of a 3D object

Question 8

features of 3rd angle orthographic drawings

Answer 8

• All 2D view is drawn accurately to scale
• ## Dimensions given in millimeters

Question 9

how to draw a 3rd angle orthographic

Answer 9

1. Draw the front view
2. Add construction land centre lines to the right to help draw the outline of the end view
3. Add construction and centre lines going up from the front view
4. Draw a line at 45 degrees in the top right hand corner of the front view
5. Draw construction and centre lines going up from the end view