As an in-class warm-up for the recycling project I made a "Reverse Yo-Yo" out of rulers, tubes and various cords and string. It is used by pulling the shoelace as one would a lawnmower and the cylinders spin to rewrap the shoelace.
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/0c68fba9-87fa-4747-b864-8d7713cc9891_rw_3840.jpg?h=8efb906ee8f98d9aeb236579f1735197)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/93f03a25-f583-4949-bf89-ff94d1ea5c9d_rw_1920.jpeg?h=5b604d25501e13c6d06b0b24a3b0d82e)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/aa876d5f-f441-4faa-bbb0-e683c9adb133_rw_1920.jpeg?h=b8458b07981a7bd6719092313eed5abb)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/fedb9655-60cd-44c7-b60d-ba1064c29499_rw_1920.jpeg?h=6abbe25b7d37337d714b6bd19b235838)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/4a971315-9275-4b84-88c8-acbe7eb70614_rw_1920.jpeg?h=545d9e05dead7a4eae122d05fdf7817d)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/00daf31a-7575-4262-87e5-7818b22bf115_rw_1920.jpeg?h=c47f208aa07b4bd260c5c239bc510ed1)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/edc73f1b-d1e8-4d13-aac1-6871627790e8_rw_1920.jpeg?h=53d5bded9d8d29abaf13165f1a38f264)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/27e03e59-875a-44f4-8ccb-fcaa1a01fe6e_rw_1920.jpeg?h=560459f2e7e23c82d329f44c579268f5)
I started by cutting slots in the smaller cylinder and inserting the rulers through the slots creating an X shape to create the stand. I kept the larger cylinder between the ruler slots to keep the cylinders together.
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/1991ed6a-5550-4e5a-9bc7-b403dc4e61a2_rw_1920.jpeg?h=90235ac55b48aee158dcf4db57ce094f)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/838bbc2f-59bc-478c-ae1a-f52f572cf9b3_rw_1920.jpeg?h=771391bef838e7f776509e57b77ccc0a)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/9fe5b0db-9bce-43b1-9bfd-a4fcc394e40c_rw_1920.jpeg?h=7a0aeeaad1dea03378cf1310d6c629b7)
I then tied leather cords around the larger cylinder to create a stationary point to tie the shoelace to without damaging the surface of the material. I also tied 2 more leather straps to the sides to make rails so the string would not slip off the sides when pulled.
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/6b9e53f6-a975-4ada-a055-84ce34934521_rw_1920.jpeg?h=621bb7a39c2c798f954e9c04bab32dd8)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/a8845367-c4a5-4bc9-937f-163b0759d283_rw_1920.jpeg?h=ebbceb69866eab40e6fddc9ef399e6d8)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/d4d73323-c880-4fb5-99c7-f04ac3f47ee3_rw_3840.jpg?h=914c884aa9aa3a990121e861b90ff6dc)
Lastly I attached a handle to the end of the shoelace for easier use. The handle also helps with easier storage by inserting the handle between the two cylinders.
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/caccfec2-c736-4f2d-a014-3a10ffb4ea11_rw_1920.jpg?h=007fb152a72bc1b110362d098d2bfd87)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/3428196b-8d73-465f-9bb7-7f753136dbb1_rw_3840.jpg?h=cb04416ddcd975e771a963c6f7a785f8)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/5dc3673f-5ba9-4834-b470-2a9530f4e0d7_rw_3840.jpg?h=eb772d09a2ba201e15bf42aa2485b017)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/5b118e7b-4f4b-413e-aea1-a2783f3fcf25_rw_3840.jpg?h=380ea35c54ce2aef9b46048a4d210d2f)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/8e2998f3-f82a-4ea6-b13b-9937e33addf2_rw_3840.jpg?h=767cf707675a90ebf557338147ffbe23)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/daaea4f4-10e5-4e3e-bdca-55d75477064f_rw_3840.jpg?h=d7e17b438ff51bee5170782ad1b8b62a)
![](https://cdn.myportfolio.com/5299adeae47c15f9aef8d26c8d09eb0a/dcea69d0-2420-4c1a-ada2-1c83f996e66b_rw_3840.jpg?h=f04acdc43a16a5b21e3bab6ed2940be3)
Final product.