There are universal problems in life that we should try to fix, and dog leashes are one of them. Andy Bratton set out to do just this for his Appalachian State University’s Senior Industrial Design studio course–and he has done all 3D printing dog owners a favor by publishing this project in a four part Instructable. Here, he summarizes his vision for this new and improved 3D printed leash:
“It uses a 3D printed handle to enclose a Figure 9 rope tensioner and a 1/2″ tape leash, and provide the user a way to adjust and lock in the length of leash between themselves and their dog. Many problems, including tangling and tripping, can be solved simply by allowing having the appropriate amount of leash between you and your dog. Standard retractable leashes serve to keep the leash taut, but don’t give the user any way to reel their dogs back in if they get into trouble. Leash Lock lets you do this manually, and provides a dog walker with superior control over their pet when walking, playing, and socializing.”
He sounds like he could possibly put the Dog Whisperer out of business in one 3D printed swoop!
For the project, Bratton used the following materials and tools: a 3D printer (Prusa i3); some hardware like 4 screws, 4 knurled press-in inserts, a Figure 9 rope tensioner; and material for the leash itself. He used an old and very strong climbing rope, but you can also use other 1/2 inch webbing or a standard tape leash. I find this to be a great improvement on the retractable leash’s usually thin string.
Finally, the last step has some notes that also show his project’s conceptual graphics, and the proper way to use a Leash Lock. As Bratton explains it:
“Simply unwedge the leash from the rope tensioner and then pull down on the front of the loop that hangs below the handle to shorten the leash. Lock it back in place when the leash is at a satisfactory length, and unlock it to let it run out again. This simple but powerful feature allows a dog walker maximum control over their proximity to their pet and, therefore, a much more enjoyable experience all around.”
If you walk your dog you most likely do it daily, so file this one away under ‘Innovative Everyday 3D Printed Necessities.’The design was created in order to be offered for a reasonable retail price, as he explains:
“I designed this product over the course of the Fall 2015 semester toward the goal of producing a limited number and testing them in a retail environment at a cost of $12. This event was successful, but as I don’t have the capital to pursue patenting or further production, I’ve decided to release this Instructable detailing how to make one yourself using some easy-to-find hardware and a 3D printer. Alternatively, if anyone would like to purchase one, I still have a few left (shipping not included)!”
If you make one or decide to purchase one of the remaining pre-made Leash Locks, Bratton would surely be excited to hear about the appeal and success of his project! Discuss this story in the 3D Printed Leash Lock forum thread on 3DPB.com.