This instructable is showing a school project at my high school to make a costume marine- themed for either a stage presentation or for Halloween. This costume is meant to fit the average middle school student (4-6 grade). The costume could only be constructed using slotted construction for easy flat pack storage.
Design and create a marine-themed animal or man-made object only out of recycleable material, preferably cardboard. Create only using slotted construction and for the use of the average middle school student.
-Made out of single, double, or tri-wall cardboard
-Only recycled materials
-No adhesives (Tape, Glue, etc.)
Step 1: Supplies
Cardboard 60" x 60"
Step 2: Tools
(T1) CUTTING MAT - For cutting cardboard on a safe surface
(T2) UTILITY KNIFE - For making cuts in cardboard
(T3) RULER - For measuring the cuts and folds
(T4) PENCIL - For making marks to make cuts
(T5) CIRCLE TEMPLATE OR COMPASS - For making perfect circles
Step 3: Parts
Step 4: Safety First
Put a cutting board (T1) down for safe cutting.
Step 5: The Layout
Lay a piece of cardboard (S1) flat on the ground.
Step 6: (P1) Epidermis: Circle
Use a ruler (T3) and mark a diameter of 46" with a pencil (T4).
Step 7: Hole
Make another 7" diameter of a circle with a ruler (T3).
Step 8: Segments
With the ruler (T3) and pencil (T4) make eight equally spread out lines 2" away from the inner circle going straight out to the edge.
Step 9: Division
With the utility knife (T2) cut the straight lines leaving space away from the inner circle.
Step 10: Horizontal Flap
With the ruler (T3) and pencil (T4) make measurements from left to right 3" space from the left side and all the way through on the right, 2" above bottom to make an elongated flap.
Step 11: Slot
Measure 1.5" from left and make incision with same length as flap that was just made.
Step 12: Slot for Tentacle
Make a 4" slit 2" above flap and in the direct middle of flap for tentacles with the utility knife (T2).
Step 13: Head Hole
Cut out inner circle for head opening with utility knife (T2).
Step 14: Helicopter Effect
Repeat steps 7 through 10, 7 more times for each segment.
Step 15: Repeat
Repeat all steps half scaled for a jellyfish dome hat.
Step 16: (P2) Tenticle
Make a rectangle with the perimeter of 4" by 12" with the ruler (T4) and pencil (T3).
Step 17: Wavy Lines
Make a wavy elongated shape staying in the dimensions of the rectangle and make sure both sides are parallel to make a tentacle shape.
Step 18: First Tentacle
Cut out with utility knife (T2).
Step 19: Repeat
Repeat steps 1-3, 7 more times for eight tentacles.
Step 20: Half Scale Hat
Repeat all steps for a jellyfish dome hat tentacle ½ scale.
Step 21: Assembly
Take the long flap on P1 on the bottom and insert it into the incision on the next side.
Step 22: Insert
Insert it about 2" and then fold in back to lock it into place.
Step 23: Fold Back
Repeat steps 1 and 2, 7 times until you have a dome shape like a jellyfish.
Step 24: Top
Take the tentacle (P2) and insert it into the top incision above the long flap.
Step 25: Middle
Pop it back out the other incision that is directly in the middle of the bottom flap.
Step 26: Bottom
Insert tentacle into second incision in the middle of the horizontal flap and pull down.
Step 27: Repeat
Repeat steps 4 and 5, 7 times for all the tentacles.
Step 28: Excess
(Optional) Cut excess flap on the very bottom as it is unnecessary.
Step 29: Hat
Repeat all steps for the jellyfish hat.