What design should I use to make a corrugated cardboard chair that will hold 300 lbs.?
by Author on Saturday, July 3rd, 2010 | 3 Comments
You are currently browsing comments. If you would like to return to the full story, you can read the full entry here: “What design should I use to make a corrugated cardboard chair that will hold 300 lbs.?”.
If you’re only allowed 4 legs maximum and no more, then use EPOXY to make the legs AND strengthen the outside of the legs by brushing on lots of Epoxy.
Careful! epoxy will not come off clothes and dont get it into ur fingers
If this is allowed, lay about 8 pieces together with glue/tape/etc to get an inch-thick seat and prevent the seat folding inwards, You can use 3-4 for the back. For the legs, fold the cardboard into a square so that the leg is at least one inch square and put them about an inch from the edge of the seat.
or
Fold the cardboard into a large square (about 2 ft either way or at least 18 in) and put one piece of cardboard on top and one on the bottom. Make four small legs to meet the requirements, but these don’t need to be very long as the square will take most of the weight. (I did a similar design out of 3 sheets of computer paper that supported 50 pounds)
The strength of corrugated comes from the flutes i.e. the corrugations. You want all of the downward pressure of the weight of the individual to be perpenticular to the flutes. The glue sheets of corrugated together by spreading white glue with a paint type roller. Stack them up and put a weight on the pile until it sets. The ends of these sheets where the flutes can be seen is where the strength is. There are many corrugated chair designs on the web. Frank Geary made a number of items out of corrugated, including, I believe, a chair. If you head to a corrugated box plant near you, I’ll bet they will provide advice and assistance.