Introduction: The Fastest Way to Make a Turtle Costume

Designing the costume was a school project introduction to systems engineering. In the activity, students deisgned and built an individual costume. Students practiced drawing technically and creating a plan of procedures. The students also learned to use precision and caution when cutting materials needed for this project. Trial and error and developing functionable  3-dimensional products were other valuable skills that were learned.
Design Brief
I designed, developed, and modeled a non fish marine life turtle costume.
Specifications
The costume had to fit a middle school aged child, around the ages of 10 to 13, and be used outdoors for trick - or - treating and play activites under minimal adult supervision. The costume could be made easily by adults using slotted construction. The costume can also be stored using flat pack design. The costume had to be marine themed as well.
Limitations
The materials used for this costume were restricted to recyclable cardboard. Adhesives were also not permitted for costume construction.

Step 1: Supply-Material List

What You Will Need
Supply
S1)Cardboard, about the size of one dishwasher box for all parts
Tools And Equipment
T1) Cutting Mat-Protect floor while cutting Cardboard (S1) with Utility Knife (T2)
T2) Utility Knife-Cut Cardboard (S1)
T3) Ruler-Measure Cardboard (S1), Draw straight Lines
T4)Pencil-Draw Lines to Cut on
T5)Ship's Curve- Measure size of circles to cut on
T6)Circle Template/Compass- Measure size of circles to cut on

Step 2: Part List

P1) Head (1)
P2) Leg (4)
P3) Body (1)
P4) Shell (1)

Step 3: P1) Head

1) Measure with (T6) Circle Template or Compass a circle with a Diameter of 9" on (S1) Cardboard
2)Draw Measurement of the circle with (T4) pencil on (S1) Cardboard
3) Cut circle out of (S1) cardboardwith (T2) utility knife on (T1) Cutting Mat
4) Measure Radius 4.5" from edge of circle to the centeriwth (T3) Ruler
5) Cut 4.5" incision on radius with (T2) utility knife

Step 4: P2) Legs

1) Measure four 3" X 18" rectangles with (T3) ruler on (S1) cardboard
2) Draw measurements with (T4) pencil
3) Cut out four (S1) cardboard pieces with (T2) utility knife on (T1) cutting mat

Step 5: P3) Body

1) Measure 26" X 18" rectangle with (T3) ruler on (S1) cardboard
2) Draw measurements with (T4) pencil
3) Cut out rectangle with (T2) utility knife on (T1) cutting mat
4) Measure 18" X 11" smaller rectangle on inside of larger rectangle with (T3) ruler. Smaller rectangle is 1" inside from longer sides of larger rectangle, 4" in from shorter sides.
5) Cut out smller rectangle with (T2) utility knife on (T1) cutting mat
6) Cut two 3" incisions 1" up from shorter side and 1" in from both longer sides of larger rectangle with (T2) utility knife on (T1) cutting mat
7) Cut two 3" incisions 2" down from other shorter side and 1" in from both longer sides of larger rectangle with (T2) utulity knife on (T1) cutting mat
8) Cut one 1' incision 1" up from smaller rectangle with (T2) utility knife on (T1) cutting mat
9) Cut one 1' incision 1" down from smaller rectangle cut out and 3" in from both longer sides of larger rectangle with (T2) utility knife on (T1) cutting mat
 

Step 6: P4) Shell

1) Measure 3' X 18" recatangle with (T3) ruler on (S1) cardboard
2) Draw measurements with (T4) pencil
3) Cut out rectangle with (T2) utility knife on (T1) on cutting mat
4) Measure two 1' flaps 2" up from each shorter side and 3" in from each longer side of the rectangle with (T3) ruler
5) Draw measurements with (T4) pencil
6) Cut out excess (S1) cardboard wo make flaps with (T2) utility knife on (T1) cutting mat
7) Measure oval with 24" circumference and 12" on each longer side with (T5) ships curve. Meaure 7" in at widest point from longer sids and 1' up at widest pont from shorter wides. Diameter measures 12" across longer side and 4" across shorter side
8) Draw measurements with (T4) pencil
9) Cut out oval with (T2) utility knife on (T1) on cutting mat
10) Fold (S1) cardboard horizontally in half so flaps match up
11) Fold both flaps upward

Step 7: Assembly - Shell and Body Front

 Insert one (P4) shell flap into (P3) body front 1' incision
 

Step 8: Assembly - Shell and Body Back

 Insert the other (P4) shell flap into (P3) body back 1' incision

Step 9: Assembly - Legs to Body Front

 Insert two (P2) legs into (P3) body front 3" incisions

Step 10: Assembly - Legs to Body Back

Insert two (P2) legs into (P3) body back 3" incisions

Step 11: Assembly - Head to Body

Slide (P1) head incision centered onto the front of (P3) body.

Step 12: Assembly - Dressing Up in Costume

Place costume over your body. Place (P4) shell oval opening over your head so the shell rests on your shoulders. Arms have free mobility on either side of body when placed in the opening between (P3) body and (P4) shell.

Step 13: Final the Turtle Finished the Race

Your costume is finished!
You may want to consider painting your costume to make it look more like a realistic turtle. Just remember to paint both sides of the cardboard or it will warp or bend, and to give the paint ample time to dry before you wear the costume.
The costume functions indoors or outdoors and is suited well for trick or treating.