Foldable Cardboard Ladder ONLY PROTOTYPE!! Instructables A9R5A1B

8/12/2019 Foldable Cardboard Ladder ONLY PROTOTYPE!! Instructables A9R5A1B

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http://www.instructables.com/id/Foldable-Cardboard-Ladder-1/

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Foldable Cardboard Ladderby nilevalleyon November 9, 2012

Intro: Foldable Cardboard LadderThis instructable explains how to build your own foldable Cardboard Ladder

Step 1:Materials:I used a Cardboard with density 300 g / m1- 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 diameter (Pins).
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Step 2:1- 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 hole, 2.5 cm away of edge on both sides of the U shape Rail.


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

Step 5:5- 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.


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Step 6:6- Top pads: Fold the 6 cm x 15 cm sheet to a channel shape (U shape) 5 cm each side.

Step 7:7- Pins: roll a 35 mm x 7 cm and glue it to have a pipe with 7 cm long and 8 mm diameter.8- Make a 8 mm hole 1.5 cm away from the edge of each Rung and in the middle of both sides (let the over lapped side be in the bottom).9- Trim 1.5 cm x 5 cm from the edges of the top side of each Rung (this to enable the move of Rung inside the Rail).10- Cut exactly the middle of each Rung only 3 sides and leave the forth side to work as hinge.11- Although the width of Rungs and Rails are same (5 cm) still you can insert Rungs into Rails, insert Pin to holes of Rung and Rail (leave 1 cm on each end of the pmake 4 cuts along this 1 cm of pin, bend the cuts and glue it to Rail (make sure the none cut side of the Rung facing Bottom).12- Repeat step 12 for all Rungs.


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Step 8:13- Using glue insert Footpads and Top pads into Rails and fix them (facing open sides) to reinforce the Rails.

Step 9:14- Glue Hinges to the four Rails and youve done.


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Comments

7 comments Add Comment

Jayefuusays: Nov 9, 2012. 2:38 PM REPIt 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 stop

them breaking?

fungus amungussays: Nov 9, 2012. 4:01 PM REPI doubt it holds much weight, much less than a person. Looks more like a prop.

Jayefuusays: Nov 10, 2012. 1:40 AM REPAhhh OK, I misunderstood :D Skillfully made nonetheless!

chioksays: Nov 9, 2012. 3:56 PM REPThis 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.

nilevalleysays: Nov 10, 2012. 1:12 AM REPAlthough this ladder is made of thick paper but still can change to a real working ladder by using proper materials and necessary modifications to easeclosing and secure against slipping and collapsing, thanks for all remarks.

Anodeansays: Nov 9, 2012. 6:18 PM REPThis is a fascinating design - i t folds wonderfully, and does look as though it is theoretically sound. The material you have used, however, appears too lighthold a person's weight. I wonder if this is a working model? I am very curious to try building these components using at least two layers of corrugatedcardboard with a "skin" made of the sort of material you have used here, to strengthen it.Very clever! Thank you for showing this. :D
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Penolopy Bulnicksays: Nov 9, 2012. 1:12 PM REPThat looks awesome! And you too so many great pictures of how you did it!
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Foldable Cardboard Ladder ONLY PROTOTYPE!! Instructables A9R5A1B