This link has a pretty good idea of the use of cardboard and the way it can be recycled. It's really fascinating what you can do with cardboard, especially for this project that is being assigned to use. No metal, glue or fasteners should be used, that's digs deep for investigation to make a cardboard chair. In this link the materials needed for the chair are of course 3 cardboard sheets, 24 by 24 inch, a utility knife, cutting mat, straight edge, and another cardboard sheet 36 by 24 inch. Two parallel slots should be cut in one 24 by 24 sheet. The slots should be on one side of the sheet, spacing the slots 3 inches in from each edge. The slots should be 12 inches log and wide to accommodate the thickness of the cardboard sheets. What is being done here is the back of the chair, where the slots will interlock with the slots on the sides of the chair. a slot should be cut from one edge of the 2 remaining 24 by 24 cb sheets. They should be made on the front side and go in towards the middle of the sheet so that they are parallel to the line of the floor (slots must be 18 inches long and width twice the thickness of the cardboard) These will be the side pieces. the slots are for the seat piece. Another Slot should be cut on the 2 sides, twice the thickness. Later locate the slots on the top corner of the side opposite to the seat slots where the slot should be 12 inches deep. The slot should be angles inwards slightly so that the end of the slot is about 6 inches from the outside edge, this is for the chair's back. Placing the sides parallel to each other, they should be 18 inches apart, and align the slots in the bottom of the back piece with the angled slots in the top back corner of the sides. slide the back into place so that is would lock with the sides. Later fold the 36 by 24 h cardboard sheet in half so that the sheet measures 18-by-24-inches. These are the seat pieces. Slide the seat into the slots on the front of the side pieces until it hits the back piece. Finally you would need to cut a 3 inch slice down the top of the sides where they intersect with the back, and fold the sliced part of the side downwards to form an arm rest for the chair.
Link2 Cardboard Chair Personal Experience
After reading over this link, it was pretty cool how you can set aside money and use the materials around you to make a cardboard chair that actually supports your weight. This is a step by step with pictures instructions. The materials are nothing but cardboard, though measurements are as followed:
(All the dimensions are in millimeters) Seat panel: 480x480 (the base of the original carton) Some of this protrudes into the back, but this is the seat width.
Side panels 410x800
Back panel (when flat) 700 wide (fold in the middle) x760 high (in the middle, 775 at the edges)
Seat height 440
Triangular girders 650 long, sides ~70 .
Strengthening tabs about 50 wide by 115 long (when folded)
To start this project, you would need to cut a rectangle out of a cardboard with a fold in the middle, later cutting a V from the bottom of the back to cause it to tilt back, it should be 1.5ml at fold. After that, the sides should be cut, cutting simple rectangles and will mirror each other. In this next step, you need to choose how to high the seat would be. Cut the slots in the bottom of the back parallel to the long edges which will accomodate the side (slots should be shorter that height chosen). Matching slots should be cut in the sides, where these slots would have to be at an angle to match the tilt back and also long enough to reach down to the top of the slots in the back. Then cut the support beams and seat, where the beams should be folded twice along their length to give a triangular cross section. Later holes should be cut to receive the beams. The holds on the opposite side should be the same, but the front and back holes might be different if the beams cross sections are not equilateral. A slot should then be back at the appropriate height to get the seat, and slot back into each of the sides. The beams should then be pushed through the holes, pushing them outwards from the inside, though one side first should be easiest. The seat should then be sled through the slot in the back from the front. This is the final step, where you get to design your own desired arm rest for the chair.
Through the research I have done so far, a lot of math is required compared to other projects we have done. But hey that's engineering in real life. Lot's of math and my favorite, hands on projects. Well of course you will need math skills. This Link is fairly simple on the steps though. Materials needed are as followed. Cardboard Box, Yard Stick, and a utility knife. Open the cardboard box so it lays flat on the surface, measuring the cardboard. The cardboard needs to be at least 45 inches wide and 60 inches high. Place the cardboard vertically laid out. The bottom edge should be used as the bottom side of a rectangle that is 45 inches long and 15 inches high. Draw a rectangle, then draw divisions lines in it at 15 inch intervals to make 3 15in squares. The lines should be extended from the line ups from the middle square an additional 45 inches, and should be divided into 3 15in squares. It should be finished drawing by a horizontal line at the top of the third square, and should look like a T. The T shape should be cut out to look upside down, folding the two squares back. Rotate the cardboard to face down, which is the base of your chair. The cardboard should then be folded so it sticks straight up, so it is on the triangle and is parallel to the ground. The square on top of the triangle is the seat, and fold the last 2 squares at a 90 degree angle, sticking up. Pressing the top down so that forms a double-thick chair, back, you are now initially able to secure the fold, creating you final product.
Videos: (more videos will be posted during the weekend)
