Instructables
Picture of Foldable Cardboard Ladder
13- Ladder folded.jpg
This instructable  explains how to build your own foldable Cardboard Ladder

See more on my site diyeasysimple.com
 
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Step 1:

Picture of
2- Rails And Rungs .jpg
Materials:
I used a Cardboard with density ≈ 300 g / m²
1- 4 pieces of Cardboard with size: 150 cm x 15 cm each (Rails).
2- 8 pieces of Cardboard with size: 37.5 cm x 24 cm each (Rungs).
3- 4 pieces of Cardboard with size: 20 cm x 15 cm each (Footpads).
4- 2 pieces of Cardboard with size:   7 cm x 8 cm each (Hinges).
5- 4 pieces of Cardboard with size: 6 cm x 15 cm (Top pads).
6- 16 pieces of Cardboard rolled with 7 cm long and 8 mm Ø diameter (Pins).

Step 2:

Picture of
1- Rails: Fold the 150 cm x 15 cm sheets into channel shapes 5x5x5 cm to form the 4 Rails (U shape).
      2- On the Rails each 30 cm long drill a 8 mm Ø hole, 2.5 cm away of edge on both   sides of the U shape Rail.

Step 3:

Picture of
5- Edge of Rung marked red to be folded.jpg
6.jpg
6aRung side view.jpg
7- Cut only 3 sides of Rung excatly in the middle.jpg
3- Rungs: Fold the 37.5 cm x 24 sheet to a square shape with 5 cm for each side, their will be a 4 cm extra side overlap it and glue to the end side.

Step 4:

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4- Footpads: Fold the 20 cm x 15 cm sheet to a channel shape (U shape) 5 cm each side.

Step 5:

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5- Hinges: for the sheet 7 cm x 8 cm trim it in a way to have 8 cm long on both sides and 5 cm in the middle.

Step 6:

Picture of
11- Gluing TopPads.jpg
6- Top pads: Fold the 6 cm x 15 cm sheet to a channel shape (U shape) 5 cm each side.
saidseyam (author) 1 year ago
Although this ladder is made of thick paper but still can change to a real working ladder by using proper materials and necessary modifications to ease closing and secure against slipping and collapsing,
jinsheng1 year ago
I think when u climb it will break
ajoyraman2 years ago
The Folding Concept is Great ! Thanks for sharing.
I recall a commercial about 15 years ago that showed a full sized car driving over a corregated boxware arch. It had no struts under it. I used to make the stuff in Seattle, resisting compression downward on the flutes "center layer" was very strong. If You are well balanced You can stand on a corrigated box sitting flat on the floor. It all depends on flute size and paper weight of manafacture. Those made to ship heavyer items are supriseing. Walk gingerly on the rice paper Grasshopper. HAR.!
Fujo2 years ago
What weight can this support?
dvdspeler Fujo2 years ago
a.k.a. where are the pictures of you standing on it? =P
I think I might make one of these, except use aluminum channel for the sides and aluminum tubing for the steps.
saidseyam (author)  NitroRustlerDriver2 years ago
Good idea, aluminum channel thickness should be 3 mm or more, good luck and let us see photos.
chibimaddy2 years ago
This is a great idea! I'd love to see someone expand on it with materials that could be more weight-bearing. Great way to think outside the box. You, and people who design these types of things, just amaze me the way your minds work.
saidseyam (author) 2 years ago
Although this ladder is made of thick paper but still can change to a real working ladder by using proper materials and necessary modifications to ease closing and secure against slipping and collapsing, thanks for all remarks.
Jayefuu2 years ago
It certainly looks like a ladder. Do you have a photo of someone standing on it? What stops the legs sliding apart? And if you tread on the treads, what stops them breaking?
chiok Jayefuu2 years ago
This seems more a "proof of concept" than a working ladder. Though I have seen the same design in a wooden ladder that worked. Lots of hinges.