Instructional Activities Guide PART 1

Transcription

1 Instructional Activities Guide PART 1 Demonstrations Guides Practice Independent Application VIDEO TUTORIALS SCREEN RECORDINGS are on the Camp PowerPoint 0

2 The 1 st Maker Space 3D Design & Printing Camp PowerPoint presentation include videos for each instructional activity. For each Slide, Camp Directors will be provided discussion notes. 1

3 TinkerCad Quick Reference Card View Controls Rotate View Up Rotate View Right Rotate View Down Rotate View Left Reset View Location Fit View to Selection Zoom In Zoom Out Shortcuts Rotate = Right mouse button + Drag Pan = SHIFT + Right mouse button Zoom = Scroll wheel Add a Workplane Remove a Workplane 1. From Toolbox, click on Helpers 1. From Toolbox, click on Helpers 2. Click on Workplane 2. Click on Workplane (See shape at mouse pointer) (See shape at mouse pointer) 3. Position mouse in desired location 3. Position mouse in Workplane 4. Click mouse to place Workplane 4. Click mouse to remove Workplane OR OR Press W, then Click in desired location to set Workplane Press W, then Click off the Work plane to remove Holes use any shape to create one Handles Moves shape up and down Top center while handle sizes height White corner handles size along Workplane Center top/bottom black handles size Y axis Side black handle size the X axis Rotates shape vertically Rotates shape horizontally Drag on shape to freely move SHIFT + any handle sizes equally Select Shapes SHIFT + Click desired shapes OR Box Select (drag box around shapes) Toolbar Undo reverses last command Redo reapplies last command Adjust, Align selected shapes align center, top, bottom, etc. Group combines shapes into one Ungroup breaks shape into pieces 2

4 Units of Measure Units of Measure are very important in both 3D Modeling and 3D Printing. Most more familiar with the English (inches) Measurements; however, 3D printing requires knowledge of the Metric system (centimeters). are But the standard measurement system for most 3D printers is metric. Many rulers show inches on one side and centimeters on the other side. 1cm =10mm mm 1 Millimeter Almost all measurements on 3D Printers are made in millimeters. There are 10 millimeters in one centimeter. The smallest measurements are made in microns, which equals 1 millionth of a meter. The symbol for a micron is: μm. There are 100 microns in a tenth of a millimeter. Your hair is about 17 μm to 181 μm in diameter. 100 MicronsMicrons are very small! STL files are sliced in very thin layers; some as small as 1 Micron Angles & Degrees are another important unit of measure. Degrees are used to measure angles. There are 360 degrees in a circle. This semi circle (half circle) only has 180 degrees. A corner is usually 90 degrees. That is sometimes called a right angle You also need to be familiar with temperature. There are two systems for measuring temperature: Celsius and Fahrenheit. A temperature in Celsius is abbreviated C and Fahrenheit is abbreviated F. The Celsius scale is used most often with 3D printers. You can make a big mistake if you are thinking Fahrenheit but the 3D printer is thinking Celsius! Notice that 120 F is only about 50 C but they are the same temperature. STEAM Engine: Build Plate - up to 110 C Extruder Hot End up 3

5 Introduction to TinkerCad and NetFabb DEMONSTRATION #1A Navigating 3 Dimensional Workplane First, direct students to the Quick Reference Card (QRC) as you demonstrate how to navigate and use the TinkerdCad tools to create STL files. Create a free account at TinkerCad.com A Series of Video Tutorials Library of Models Click Lessons or Create New Design to get started! Create New Design Navigation of the Workplane: View Control Arrows and Angle Views: Move Arrows or Press and Hold Right Mouse Button ZOOM : + and - buttons or use Mouse Scroll Wheel SELECT: Hold left mouse button to drag box around objects to be grouped or SHIFT + Click each object Measurement: Edit Grid to work in either English or Metric Basic Shapes Drag to Workplane and Letters Text (Shape Generators TinkerCad) Numbers Geometric Shapes Helpers Workplane and Ruler Extras Tools Design Menu Import Wheels and Axle Save or Rename a file: Workplane Add and Remove 1. Design, Save Group OR Adjust, Align 2. Design, Properties Inspector, Color Inspector, Hole Create an STL file: Undo (CTRL+Z) 1. Design, Download for 3D Printing Size Handles NOTE: If students have not already done so, guide them through creating an account. 4

6 Introduction to TinkerCad and NetFabb DEMONSTRATION #1B Measurement and Alignment Explain the importance of constraints and criteria to effectively identify a problem -- The formulation of the problem is often more important than the solution. Einstein WHEELS and AXLE: After demo, give campers the printed parts and ask for their feedback Shapes Used: Thick Torus and Cylinder Tools Used: Hole, Align, Group 1. Use Torus Thick to create the wheel X and Y = 50 mm and Z = 8 mm 2. Use Cylinder to create the wheel well X and Y = 25 mm and Z = 9 mm 3. Use Cylinder and Hole tool to create opening for the axle X and Y = 6 mm and Z = 9 mm (Long enough to push down through wheel well) 4. Select all 3 objects and Adjust, Align to center and then Group 5. Duplicate the wheel by selecting it, then Copy (CTRL + C) and Paste (CTRL + V) Second wheel will have identical dimensions as the first 6. Use Cylinder to create the axle X and Y = 5.5 mm and Z =102 mm 7. Select and rotate 90 degrees to lay it flat on the Workplane Notice: the axle is.5 mm smaller than the holes in the wheel and the same size (5.5 mm) as the hole in the axle caps designed to hold the wheels on the axle. Do you think they will fit? Why? Why not? 8. Use Cylinder to create axle caps X and Y = 12 mm and Z =3 mm 9. Use Cylinder and Hole tool to create opening for axle X and Y = 5.5 mm and Z =6 mm 10. Use the Adjust, Align tool to center the Hole cylinder in the middle of the axle cap and Group 11. Select the wheel and Copy (CTRL+C) and Paste (CTRL+V) to easily create a second wheel with identical dimensions 12. Box select all parts and click Group 13. Click Design, Properties to change the name of the model to Wheels and Axle and click Save 14. To create an STL file, click Design, Download for 3D Printing and select the STL option and follow prompts to save or open in NetFabb 15. Complete repair process and right click to export as an STL If you are having a hard time printing the axle, add a BRIM in Repetier! 5

7 Repairing and Handling STL Files Introduction to TinkerCad and Netfabb DEMONSTRATION #1C Handling and Repairing STL files Netfabb Basic If you create and save an STL file on your computer, you can t open, view, handle, or repair it unless you have an application such as Netfabb Basic installed on your computer. However, it is not necessary to create or save an STL. Without Netfabb or a similar application, you can save the STL file to a flash drive to transfer it to the computer that is connected to the 3D printer. Although it is not necessary to have Netfabb to create an STL or 3D Print the STL model, it is very helpful and highly recommended. Using Netfabb Basic If you do have Netfabb installed, STL files will appear in the folder it was saved to, with the Netfabb logo. When you click on the file, it should automatically open in Netfabb Basic. 1. OPEN STL: Click on the STL to open it in Netfabb 2. REPAIR: Click the red Plus sign to Repair the STL file 3. Click Automatic Repair and then the Execute button 4. Click Default Repair, then Apply Repair and Remove Old Part (3D Model should turn Green) 5. Right click the model or click on Part Menu, select Export Part, as STL 6. Save it to a folder of your choice. 7. To 3D print it on the STEAM Engine, Save and Export it to a flash drive to transfer it to the computer connected to the printer When Exporting as STL from Netfabb, you may get this Error Message. If so, click Optimize! This is why you use Netfabb! Click Export to save to the folder (flash drive) of your choice. 6

8 7 Copy to Sketch Name Tag Designs

9 NAME TAG Option 1 Guided Practice Activity 1D Introduction to TinkerCad and NetFabb Guided Practice #1 Intro to Digital Design Before beginning this demonstration, ask students to sketch a name tag on a 2x3 inch piece of paper, include a word or symbol to show something they like. Discuss how sketching and dimensioning techniques are useful in Engineering. Show students sketch of name tag design for demo. After creating a 2x3 inch (50 x 75 mm) oval from a cylinder, point out the dimensions and ask if it would fit on their paper? 1. Add GEOMETRIC SHAPE: Drag Cylinder to Workplane to create an oval base for Name Tag 2. Size and Measurement: Drag sizing handles to adjust as follows: a. Enlarge (XY) to approximately 75 x 50 mm b. Change Grid to Inches c. Flatten (Z) to 1/4 inch d. ASK: If 1 inch = 25.4 mm, how many mm does ¼ inch equal? e. Change Grid back to mm, should now read 6.35 f. Reduce thickness of base to only 3mm 3. Add GEOMETRIC SHAPES (Stars and/or Hearts) to create a base for Name Tag 4. SELECT OBJECTS: SHIFT + Click both stars 5. ALIGN OBJECTS: Use Adjust, Align to center align the stars as shown 6. GROUP OBJECTS: With both stars selected, click Group 7. Hold SHIFT + Click to select the base too, Center Align the stars with the base, then Group 8. Letters vs. TEXT: Drag TEXT to top of oval base a. Change Font to Tinos b. Replace TEXT with your name c. Reduce height to under 10 mm d. Drag Size Handles to adjust size of name to make it fit on the base 9. Select the Base and Text, then Group 10. IMPORT FILE: Under Import, a. Click Choose File b. Double click Option 1 Battery LED Holder.STL from Camp STL files folder c. Click Import button, tag appears on screen 11. Drag Tube Thin to top of base to create a loop for string or ribbon 12. Increase height of tube to 3 mm 13. Select and vertically Adjust, Align all 3 pieces, then Group Variations: 8 Point out that the center of the A (in variations) will not be attached to the name tag unless something (i) is added to attach it to the base. Don t forget to group! Open the Name Tag in Netfabb and point out that the center of the A will not be attached to the name tag unless it is fixed in TinkerCad. 14. Create an STL file: Click Download for 3D Printing and select the STL option and follow prompts to save or open in Netfabb, complete repair process and right click to export as an STL

10 NAME TAG Option 2 Guided Practice 1E Activity Guided Practice #1 Intro to Digital Design Before beginning this demonstration, ask students to sketch a name tag on a 2x3 inch piece of paper, include a word or symbol to show something they like. Discuss how sketching and dimensioning techniques are useful in Engineering. Show students sketch of name tag design for demo. After creating a 2x3 inch (50 x 75 mm) oval from a cylinder, point out the dimensions and ask if it would fit on their paper? Then edit grid to show English measurement, instead of the metric. 1. Add GEOMETRIC SHAPE (BOX) to create a base for Name Tag. a. Flatten (Z) to 1 mm b. Enlarge the X to between mm and the Y to between 9-10 mm 2. IMPORT FILE: Under Import, a. Click Choose File b. Double click Option 2 Battery LED Holder.STL from Camp STL files folder c. Click Import button, tag appears on screen 3. SELECT OBJECTS: Hold down the shift key or draw a box to select the base and the battery holder. 4. ALIGN OBJECTS: Use Adjust Align tool to center horizontally and vertically 5. WORKPLANE: Drag Workplane (in the Helper toolbox) to front of Battery LED Holder 6. TEXT: Drag TEXT to Workplane. Enter your Name. Reduce height (Z) thickness (Y) and width (X) as shown 7. ANGLE VIEW: Change angle to view and reduce thickness of letters, so that at least half is sitting on the base plate. Make sure the text is sitting on the original workplane, so the letters are connected to the base AND the Battery LED Holder 8. WORKPLANE - Remover: From the Toolbox on the right, drag workplane tool to the original Workplane 9. SIZE and DURABILITY: Adjust the base size to make sure all letters are joined to it. It may be a good idea to add support behind that letters that are not supported by the battery holder. Options may include: Adding 2 more Battery LED Holders Adding a bar or shapes to connect letters and base (the letter I makes a good support ) 10. GROUP: Draw a box around all of the parts to select and click GROUP from toolbar 11. Remove the Workplane by dragging workplane tool to the original workplane. 12. Make sure the Name is sitting on same plane as Battery LED Holder. (at 0 ) 13. Use Adjust Align tool to center name on holder 14. Rotate view to see back of Battery LED Holder 15. Add a Workplane to back of Battery LED Holder 9

11 16. Drag U to Workplane and resize to approximately 24mm by 32 mm as shown 17. Rotate U 180 degrees 18. Adjust, Align Center U with Battery LED Holder Name Tag 19. Remove Workplane by dragging tool to unoccupied area 20. Ask: What is wrong with this Component? it is floating 21. Use Push/Pull tool to lower U to sit on the same workplane at the Base at 0.00 mm 22. Reduce thickness of U to only 2mm 23. From the Toolbar, click Group 24. Rotate to view from all sides. Make sure there is room for the battery and LED! 25. Download for 3D Printing and save as an STL 10

12 Guided Practice 1F Activity Guided Practice Activity 1C Guided Practice #1 Intro to Digital Design Introduction to TinkerCad and NetFabb OPEN STL: Click on the STL to open it in Netfabb REPAIR: Click the red Plus sign to Repair the STL file 8. Click Automatic Repair and then click Execute 9. Click Apply Repair and Remove Old Part (3D Model should turn Green) 10. Right click the model, select Export Part, as STL 11. Save it to a folder of your choice 12. To 3D print it on the STEAM Engine: save it to a flash drive to transfer it to the computer connected to the printer When Exporting as STL from Netfabb, you may get this error Message. If so, click Optimize! This is why you use Netfabb! Click Export to save to the folder (flash drive) of your choice 11

13 CREATE A NAME TAG Encourage Creativity! Independent Practice Activity 1G Apply what you have learned! After sketching a name tag on a 2 x 3 piece of graph paper, Create a Name Tag STL file and print it on the STEAM Engine 3D Printer! TinkerCad PRACTICE Create quick tag that will hold an LED and Battery LED Holder XYZ = < 2x 2 x 1 inches or 50 x 50 x 25 mm 1. Download for 3D Printing a. Repair in Netfabb b. Export as STL c. Save ( Download for 3D Printing ) d. Repair in Netfabb e. Save Repaired STL file to flash drive 2. Open Repetier a. Connect b. Turn on Fan and Heaters make sure at correct temperature c. Install Filament color of choice d. Load (from flash drive) e. Scale, Rotate, adjust infill, add support (as needed) f. Slice g. Start Print ADDITIONAL INSTRUCTIONAL RESOURCES: TinkerCad Book FREE CHAPTER 4 PDF Using TinkerCAD to create a 3D penholder TinkerCad Shortcuts Video: 12

14 CAMP DIRECTOR DEMONSTRATES! REPETIER and SLICER: Safe Operation of Printer DEMONSTRATION #2A 1. Name Tag Files a. Double-Click the Repetier Icon on Desktop b. Click Connect top left corner c. Click Manual Control tab Turn on Build Plate and Extruder to allow it to begin to heat. d. Click Object Placement tab Either the Plus Sign or the button that says LOAD e. Repeat to load Name Tag STL files for all print partners f. Click Slicer tab i. Click big Slice with Slic3r button g. Wait for the file to slice and the Preview window to open h. Click Object Placement tab to make sure the Build Plate is heated to 110 degree Celsius and the Extruder is heated to 220 degree Celsius i. Turn on Fan j. Click Start Print 13

15 REPETIER and SLICER: Safe Operation of Printer STUDENTS PERFORMANCE! Guided and Independent Practice #2B 2. Direct students save Name Tag STL files to flash drives. (3-4 students per flash drive / 3D Printer) 3. Direct students gather around their assigned 3D Printer with their print partners. Pick one student to operate computer controls run Repetier. (They will switch each day) 4. Verbally, with Repetier projected on screen, guide students through Loading, Slicing, and Printing STL Name Tag Files. READ and ASSIST as needed. a. Double-Click the Repetier Icon on Desktop b. Click Connect top left corner c. Click Manual Control tab Turn on Build Plate and Extruder to allow it to begin to heat. d. Click Object Placement tab Either the Plus Sign or the button that says Load i. Repeat to load Name Tag STL files for all print partners. e. Click Slicer tab i. Click big Slice with Slic3r button. f. Wait for the file to slice and the Preview window to open. g. Click Object Placement tab to make sure the Build Plate is heated to 110 degree Celsius and the Extruder is heated to 220 degree Celsius. h. Turn on Fan i. Click Start Print 14

16 Engineering Design Process and Sketching GUIDED & INDEPENDENT PRACTICE #3A Engineering Design Process Day 1 Team Project ENGINEERING FOCUS WARNING: Do not store motor and battery together. They will over heat and destroy. 1. Examine the Original Car a. Identify the parts b. Examine how everything fits together 2. Use TinkerCad to design a better car may use all or some of the stl files used in the original to create a better version or you may start from scratch! 3. Identify ways to improve and use Glue Dots to assemble the parts. Hint: glue dots work well to hold prop on motor if the hole is too big -Scaled down to.8 may need to use a smaller motor. -Rotate Z 90 degrees A name will be drawn to determine which camper gets to take the final car home; however, remind students that they will now know how to build their own and may do so as their final project if they choose. After Explaining The Difference between Invention and Innovation and Sketching, Orthographic, and Isometric Drawing (slides - ), Ask students and discuss how the Demo 9v Air Car can be improve? Then, challenge them to improve (innovate) the design. Remind students that engineers document their ideas and plans. Give students the Engineering Design Process worksheet to guide them through the process. 15

17 GUIDED & INDEPENDENT PRACTICE #3B Engineering Design Process TinkerCad and NetFabb All STL files have been provided on the Master and Student Flash Drives 1. Option A: Import all or some of the Parts needed to build a 9 volt battery powered car. Click Choose File,browse to find, open, click Import for each stl file listed below. chasis.stl back wheel hubs.stl front wheel hubs.stl battery holder.stl motor mount post.stl motor mount.stl propeller.stl Option B: Design car from scratch. 2. Edit the pieces you wish. Maybe you want 4 wheels instead of 3, etc. For example, you can take a second base for the car and rotate it 180 o to line it back up, and now you have a spot for 4 wheels 3. You can also edit the pieces to make them thicker or thinner to make the chassis stronger or the tire wider. Independent Practice Activity Next WARNING: Do NOT store 9v Battery & DC motor in bag together! Do not allow Metal motor to touch Battery! 16

18 GUIDED & INDEPENDENT PRACTICE #3C Engineering Design Process ACTIVITY GUIDE With your team, use these questions to brainstorm, generate ideas, plan, and design a car that can be printed on the STEAM_Engine 3D Printer. Experiment with 3D printed car parts & glue dots to stimulate imagination! Ask: How can we improve on the design of the Demo Car? Examples: Would 4 wheels be better than 3? Weight of battery be better in the front, middle, or rear of car? Imagine: Use the ideas generated in the Ask Discussion and your imagination to draw a sketch of your vision. Use sketch to communicate ideas to team mates and discuss components of each sketch that will be included in final design. Use Graph Paper included in Design Kit. Remember the size limitations of 3D printers and include measurements in sketch. Plan: As a team, sketch final drawing and decide how you will work together to design & print the parts. Will you import some or all of the files. Use Graph paper to sketch Technical Drawing of final designs. If each person in the team is designing a different part, each should have a separate sketch for their part; but, make sure it matches the Team sketch. Hints: The battery holder STL file can be imported into any design you choose, as can any of the STL files used in the demo car. Is the motor you are using the same size as the one in the demo car? Create: Use Tinkercad to design 3D Model of car. Basic. Save as STL file(s) Open, Handle, & Repair in Netfabb Improve: Before Exporting as an STL from Netfabb Basic, ask team mates to evaluate the part and determine if you need to go back into Tinkercad and make any adjustments. Ask: will the parts fit together? Fit on the build plate? Need support structures? Imagine & Plan: How to adjust, improve 3D Model. Create: Make adjustments in Tinkercad Export & save STL files to flash Drive Load into Repetier: Scale, Rotate, add support structures if necessary Slice Start Print! Assemble Car & TEST! 17

19 18

20 19

21 123D Design ~ DEMO GUIDE 4a OPTIONAL MAY CHOOSE TO SKIP 123D DESIGN & MASTER TINKERCAD! Navigation: Work Space Pan, Orbit, Zoom View Cube Tools Mouse Creating Objects: Kits Primitives Tools Sketch Tools Object Parts: Faces Edges Points 1. *Double Click to select object 2. Single Click to select Parts 3. Click Work Space grid to deselect * Very important Create Objects Work Space Grid No Object Selected View Cube Work Space NAVIGATON View Kits Box Double-Clicked Selected Notice Green Line around the box and FACE Selected EDGE Selected Side FACE Selected Top FACE Selected POINT Selected NOTE: Editing options (Toolbar pop-up) vary depending on the part that is selected! 20

22 123D Design ~ DEMO GUIDE OPTIONAL MAY CHOOSE TO SKIP 123D DESIGN & MASTER TINKERCAD! 4a continued Delete Object: Click it one time and press DELETE Manipulating Objects: Double Click to select the object and the Toolbar will appear Move Scale Hide Material Dimensions Export Selection YES! Choose STL Send to Meshmixer NO (Advanced Part 2) Send to 3D Printer NO (STEAM_Engine not an option) Send to MAKE (Another cool app great for Laser Cutters Part 2!) Manipulating Parts of Objects: Select the Part and the Editing Tools will appear FACES EDGES Tweak Push and Pull Shell Tweak Fillet Chamfer POINTS Tweak 21

23 123D Design ~ DEMO GUIDE 4a continued Manipulating Parts of Objects: Illustrations of the effects of each editing tool when applied to each Part of the box FACE TWEAK SHELL PUSH PULL EDGES TWEAK FILLET CHAMFER POINTS TWEAK 22

24 123D Design ~ DEMO GUIDE 4a continued Transform Tools MOVE-SCALE-ROTATE GROUP Tool Move Rotate - Scale SNAP: With no object selected, click SNAP tool. Select face of first object to move. Then, select the face of the second object to snap the first. (CENTER Aligns Snapped Faces) Select objects to move, group, rotate, or scale: hold down left mouse and drag a box around objects. Rotate the cone to select bottom face Group and Ungroup Cruising Press SHIFT + Drag as you move object It will snap to other objects as they connect or touch SNAP tool is a more controllable option 23

25 123D Design ~ DEMO GUIDE Combine Tool 4a continued Merge Subtract Intersect Merge Combines objects into one 1. Click on Combine, Merge 2. Select all objects to be Merged 3. Press ENTER NOTE: To separate, you must Undo or CTRL+Z because Ungroup will NOT separate fused shapes Subtract The first object selected will remain; the second object you select will be removed from the first object selected 1. With no object selected, click Combine, then Subtract 2. Select the Box 3. SHIFT + Click the Cylinder 4. Press ENTER, this creates a hole in this example Intersect Only keeps the parts of objects that overlap; it will not matter which one is selected first 1. With no object selected, click Combine, then Intersect 2. Click the Cylinder 3. Click the Box 4. Press ENTER 24

26 25

27 Demonstration and Guided Practice 5A TinkerCad v. 123D Design DEMONSTRATION Lite Box Sticking with TinkerCad may be the best idea for younger, less experienced, students; however, you may skip this demo and introduce 123D Design. STL files may be imported from the Camp STLs folder, in either TinkerCad or 123D Design. Options: 1. Demonstrate each step, pausing to allow time for participants to complete. 2. After Demonstrating steps 1-12, allow students to import Box Bottom1.STL and begin with step After Demonstrating steps 1-18, students can import Box Bottom 2.STL and begin with step 19 or side Drag the Box shape to the Workplane and SHIFT + Drag to enlarge XYZ to 50 mm 2. Duplicate the box Select box, press CTRL+C (copy) and press CTRL+V (paste) 3. Change the color of the 2 nd box for easier handling and identification. 4. Reduce the size of the 2 nd box to 47 mm 5. Raise the 2 nd box 3 mm off of the workplane 6. Center Align the boxes 7. Use Inspector, Hole to turn the 2 nd box into a hole 8. Select and Group both boxes Option 2 - import 9. Import the Coin Battery LED Holder.STL from the Camp STL folder 10. Center Align the Battery LED Holder in the bottom of box 11. Group box and holder (BOX BOTTOM 1.STL may be imported) 12. SIDE 1: Rotate View Up to see side of box. 13. Add a new Workplane to the side of the box. 14. Drag the Voronai (Paver) shape to the face of the box a. Center Align to face of box; using SHIFT + Click on box and Paver b. Click off of the shapes and Click to select only the Paver c. Rotate view slightly to increase thickness of Paver to 10 mm d. Click on Inspector, Hole to convert solid parts of Paver to holes e. Use Push/Pull (red arrow) to push Paver hole through box 6mm 15. Remove Workplane (Press W, then Click off of Workplane) 16. Select and Group the Paver and Box 26

28 17. Side 2: Rotate to the opposite Side and perform Steps (BottomBox2.stl may be imported) 18. Sides 3 and 4: Embellish as desired to allow light to shine through all 4 sides 19. From Toolbar, select GROUP 20. Download for 3D Printing and save as an STL NOTE: To save time, you may want to start printing box before you begin lid/top. INDEPENDENT PRACTICE #5B TOP CHALLENGE: 1. Create a lid/top for the box Suggestions: a. Voronoi (Paver) b. Add pegs to secure lid/top OR 2. Import Box Top 3.STL NOTE: The A on the Lite Box Demo has an I added to support center of A. 27

29 3D PROJECT PROPOSAL Apply the Engineering Design process and present your ideas! Restraints: Must be able to print in 2 hours on Thursday & 2 hours on Friday. No more than 4 parts. No more than 4 parts and less than Name of Project: Inspiration of Project: Description & Technical Drawing of Project: Rough Sketch of 3D Model 28

30 Ask: What problem am I solving? How am I improving something that we already have? What is the purpose of my project? Imagine: Use the ideas generated in the Ask Discussion and your imagination to draw a sketch of your vision. Use sketch to communicate ideas to team mates and discuss components of each sketch that will be included in final design. Use Graph Paper included in Design Kit. Remember the size limitations of 3D printers and include measurements in sketch. Plan: How and when will you print parts? Remember Things to Consider Create: Use Tinkercad or 123D Design to create a 3D model of your idea.. Handle, & Repair in Netfabb Basic. Save as STL file(s) Open, Improve: Before Exporting as an STL from Netfabb Basic, ask team mates to evaluate the part and determine if you need to go back into Tinkercad and make any adjustments. Ask: will the parts fit together? Fit on the build plate? Need support structures? Imagine & Plan: How to adjust, improve 3D Model. Create: Make adjustments in Tinkercad Export & save STL files to flash Drive Load into Repetier: Scale, Rotate, add support structures if necessary Slice Start Print! 29

31 30