1. RPI Pencil Sharpener Sophie Connor and Katy Mix Schoharie Central School SME Contest Presentation

2. Pencil Sharpener

3. Why Make This Product? Practical and widely used Variety of processes Says “RPI” Elegant and efficient design

4. Overview of Processes Injection Molding Abrasive Waterjet Cutting CNC Machining Laser Cutting and Engraving Ultrasonic Welding Heat Treating

5. Measurements (Basic) 5 ½” 1 ¼” 3” 2 ¾”

6. Gear Bank Handle: Injection Molding Handle

7. Gear Bank Handle Pin Handle Handle Pin: CNC Machining

8. Gear Bank Handle Lever Handle Pin Handle Handle Lever: Abrasive Waterjet

9. Gear Bank Handle Lever Handle Pin Shaft Handle Shaft: CNC Machining

10. Gear Bank Handle Lever Handle Pin Shaft Planetary Gear (attached to blade) Blades Handle Blades and Attached Planetary Gear: CNC Machining Possible Heat Treating

11. Gear Bank Handle Lever Handle Pin Large Gear Shaft Planetary Gear (attached to blade) Blades Handle Large Gear: Abrasive Waterjet

12. Gear Bank CNC Machining shaft blades w/ planetary gear handle pin Abrasive Waterjet Cutting large gear handle lever Injection Molding handle Handle Lever Handle Pin Large Gear Shaft Planetary Gear (attached to blade) Blades Handle ½” Diameter ¾” Diameter 2” Length 3 ¾” 1 ½” Diameter ½” ¾” 2”

13. Sand/Garnet Base Base Cover 3” 1” Sand Injection Molding base Laser Cutting cover Ultrasonic Welding connect cover and base Filled with sand or recycled garnet from waterjet machine.

14. Drawer Injection Molded 2 ¾” 1 ¼”

15. Case 1 ½” 3”

16. Cost MaterialAmount NeededCost/lbTotal Cost Aluminum110 lbs$5$550 Steel100 lbs$1.50$150 Large Molds2$500$1000 Small Molds3$250$750 Sand (Optional)200 lbs$0.07$15 PlasticDonated$0 Cost/Unit$6.00 Total $2500

17. Thank you! Any questions?