Original Prusa i3 MK3 X-axis motor cable strain relief

thingiverse

**Update 18.09.19. My ability to support this mod is now significantly limited due to no longer owning the Prusa printer.** This simple and elegant strain relief is designed specifically for the X-axis motor cable on a MK3. It wraps around both the motor and the cable, then tightens with a zip-tie inside the cable grip, where small teeth securely hold the cable in place. Please be aware that this design works exclusively with the textile sleeve. It will not function with older spiral wraps. If your Prusa came equipped with spiral wraps, you can easily purchase textile sleeves yourself. Prusa now supplies HellermannTyton as their recommended brand, and the sleeve diameter for the X-axis motor is 5mm. The part number is [170-01000](https://www.hellermanntyton.com/products/open-woven-sleeves/twist-in-05/170-01000), and it can be purchased from Conrad if you reside in Europe. For more information, visit the [PrusaOwners Wiki](https://github.com/PrusaOwners/prusaowners/wiki/MK3_Compatible_Parts). This design has been thoroughly tested by multiple individuals during beta testing, but due to its reliance on two precise interference fits, it may still be too tight or too loose for some users. I have provided the Fusion360 file, allowing you to adjust either the inner size of the collar or the inner diameter of the cable outlet as needed. The required dimensions can be found within the model parameters. The correct installation orientation ensures that the cable is directed away from the printer by the outlet. When installing, use common sense and apply moderate force when tightening the zip-tie, ensuring it's just tight enough to prevent the cable sleeve from being easily removed or the collar from shifting on the motor body. Holding the eyelet of the zip-tie with one hand while pulling the other end with pliers will achieve this without excessive force. I extend my gratitude to @stahlfabrik for his valuable feedback during design and photo of the installed strain relief, as well as to the "602 Wasteland" Discord group for their support and motivation.