3D ENGIN

EERING

DRAWIN

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WHY IS DRAWING IMPORTANT?

• Communication• Ideas• Parts/Assemblies• Dimensions and Units

WHY I LIKE DESIGN

• Engineering without technical theories and equations

• Creative

• Enjoyable

COMPUTER AIDED DESIGN - SOLIDWORKS

STARTING OUT

• You can’t just jump into creating on the computer….

• You have to start by hand!!

ENGINEERING PAPER

• English vs. Metric Units

• Cartesian vs. Engineering vs. Isometric

VISUALIZING IN 3D

• Take 3 to 5 Duplo Legos and put them together however you like

• Visualize clear box around your structure

• Draw each side of the “box” on the box template on your table

• Fold and tape into box formation

• Does it resemble actual structure?

DRAWINGS AND COMMUNICATION

• Find someone in the room to trade boxes with

• Can you build each other’s structure?

• What was easy about building the new structure?

• What was difficult about building the new structure?

• What could have improved your build?

ENGINEERS DON’T DRAW ON BOXES

• Let’s find a way to flatten that box

• Shade in the following sides on your box with the crayons at your table:• Top = red• Pick two adjacent sides that also touch the top = Make one blue

and one yellow

ENGINEERING TECHNICAL DRAWINGS

ISOMETRIC VIEWS

• Drawing looking at corner of “box”, not straight on face

A LITTLE GEOMETRY

http://www.mr-d-n-t.co.uk/isometric.htm

A DRAWING DEMONSTRATION

1 – Draw Side Shape

2 – Project Corners Backward

3 - Draw Back Shape

http://www.youtube.com/watch?v=ZBuhGaGPYfQ

PRACTICE ISOMETRIC DRAWINGS

• Cube – 5 x 5 x 5

• Cube – 8 x 8 x 8

• Rectangular Prism – 4 x 3 x 7

• Rectangular Prism – 3 x 9 x 3

• Triangular Prism - Right triangle with legs = 7, depth = 3

• Pyramid – Base = 4 squares

• Cut-Off Pyramid – Base = 16 squares, top row = 4 squares

• Challenge: Cube 2 x 2 x 2 with pyramid on top

FINISH THAT TECHNICAL DRAWING

Draw your Duplo Masterpiece on the isometric view of your technical drawing

LET’S TRADE AGAIN

• Find someone new and trade again

• Build their structure

• Was one drawing type easier than the other?

TECHNICAL DRAWING SYMBOLS

• Understanding Symbols: http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ENG16204

TECHNICAL DRAWING LINES

• Understanding Lines: http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ENG16004

TECHNICAL DRAWING DIMENSIONS

• Understanding dimensions: http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ENG16104

A LITTLE EXTRA VISUALIZATION

http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ENG19404

CHALLENGE BUILD

WHY THIS IS IMPORTANT TO YOU

• Improve accuracy

• Future Projects• Rube Goldberg• Boat Activity• Lego Egg Drop

ASSIGNMENT

• Draw an item in your kitchen.

• Under the assignments tab

• Will turn in by hand

• Due: September 17th