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Materials you will need-
-100 RPM DC Motor
Step 1: Take 2 Square Pieces of Cardboard, 5cm Each, and Stick Them on Either Side of the DC Motor As Shown.
Step 2: Do the Soldering Process As Shown.
Step 3: Cover the Top With a 5cm * 3.5cm Cardboard Piece, Which Has a Square Hole As, Shown.
Step 4: On the Sharpener, Make a Dot Where the Tip of the Pencil Will Be.
Step 5: Glue the Bottle Cap to the Motor As Shown. Fix the Sharpener Over the Bottle Cap Vertically As Shown. Match the Dot With the Centre of the Shaft.
Step 6: Glue the Battery to the Cardboard. Place the On/off Switch As Shown, and Connect It to the Wire of the Motor. Connect Them to the Battery.
Step 7: Take a 10cm * 8cm Piece of Cardboard. Glue It to a 10cm * 3.5cm Piece of Cardboard As Shown.
Step 8: Take a 10cm * 4.5cm Piece of Cardboard With a Slot for the On/off Switch and Glue It to the Top As Shown. Place the Switch.
Step 9: Cover the Back Side With a 7.5cm * 3.5cm Piece of Cardboard.
Step 10: Make the Following Cardboard Cutouts of the Given Measurements. Glue Them Together As Shown. Place This Box Inside the Sharpener Machine.
Step 11: Cover the Front With 2 Cardboard Pieces of the Given Measurements. Make a Hole in the Top Piece to Insert the Pencil.
Step 12: Stick a Bottle Cap to the Bottom Piece to Act As a Knob. Label As Desired. Your Pencil Sharpener Machine Is Ready!