U1-L16

October 6, 2010DRILL

1. Are 3 views always sufficient to accurately represent an object?

2. What are the 5 steps to draft orthographic projections?

1. No, they are not. 3 views are generally sufficient, but not always.

2. 5 steps1. Square and tape paper2. Lay out border3. Darken border and complete title block4. Draw construction lines5. Measure and draw (BEGIN WITH LIGHT CONST.)

U1-L17

October 6, 2010DRILL 2

1. Correctly label each view:

2. What type of line is the lightest line on your paper?

FRONTTOPRIGHT

CONSTRUCTION LINES

Note-taking in FOT

• At Poly we train you for two things:• Success in college• Success in the world

• Do not copy every word – it won’t be possible.

• Capture the main ideas and key details.

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Lettering

• Engineer’s communication tool• All capital letters• BETWEEN GUIDELINES• Legible and Consistent

LEGIBLE AND CONSISTENT

LEGIBLE AND CONSISTENT

LEGIBLE AND CONSISTENT

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• On top line, identify the unit we’re in.• Never write in line directly below it (no X’s)

UNIT 1 – GENERAL CONDITIONS

BPI NOTESHEET 6 OCT 10 WETZEL, T. 7

Note Sheets

• Three line weights in this class:– Light: very thin, not noticeable from 2’– Medium: thin, noticeable from 2’– Heavy: thick, obvious from 2’

DRAWING

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GRID COPYING

• Rules for drawing:– Pull your pencil, don’t push it.– Use proper line weight– Always start with LIGHT layout lines.

DRAWING

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1/16” 1/8” 1/4” 1/2” 1”1 3/16”

1 3/8”1 1/2”

1 3/4”3/4”

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16

MEASURING

3-VIEW DRAWINGS

TOP VIEW

FRONT VIEW RT SIDE VIEW

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TOOLS• Sharpened Pencil - different line weights• Drawing Board

– Smooth, flat surface• T-Square

– “Head” and “Blade”– Horizontal lines ONLY– NEVER for vertical lines or for other uses

• Triangles– 30-60 degree triangle– 45 degree triangle

• Compass - circles U1-L9

DRAFTING

• HORIZONTAL LINES– Hold t-square TIGHT against board– PULL your pencil, DO NOT push it– Hold pencil at slight angle to paper (60 degrees)– Twist your pencil to keep a consistent point– DO NOT allow pencil to go under t-square

• VERTICAL LINES– Hold triangle TIGHT against t-square– Hold t-square TIGHT against board

U1-L9

1. Square horizontal line on paper to drawing board using T-Square

2. Fasten upper left corner of sheet with ‘dot’

1

2

3. Smooth to the lower right corner

4. Attach

3

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5. Smooth to upper right, then attach

6. Smooth to lower left; finish attachment

5

6

DOUBLE-CHECK FOR SQUARE

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STEP-1 Square paper down using T-Square and lettering guidelines

1

2 Attach

3

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5

6

DOUBLE-CHECK FOR SQUARE

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STEP 2 – Lay Out Border• Measure ½” from all 4 edges of your

paper. Then draw LIGHT const. lines.[Intersections can criss-cross – as long as construction lines are LIGHT]

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½”½”

½”

½”

STEP 3 – Darken Border• Darken border lines with a heavy line.

Begin and end precisely at intersections.

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½”½”

½”

½”

STEP 4 – DRAW CONSTR. LINES

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STEP 5 – MEASURE AND DRAWBegin with Construction Lines

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DRAFTING 3-VIEW

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DRAFTING 3-VIEW

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HOMEWORK– FINISH 3 VIEW DRAWINGS USING RULER AT

HOME

– Study Notes and Drills for Multiple Choice Part of Test

CLASSWORK

• Continue drafting the 3-view assignments from last week.

U1-L16