Review on Befenybay Synchronous Straighten Tensioner Creality: Achieve Perfect 3D Printing Precision by Loren Schmidt

I got these to upgrade the non-adjustable and fairly flimsy X and Y axes on my Longer LK4 Pro. Spanner Y continues unchanged and straight ahead. However, the X-axis required a small modification to work perfectly. Upon arrival, the outside touches the right side frame of the portal. So I had to cut about 4.8mm off the end so the bolt holes would line up with those on the X axis frame. I know this part is probably for Creality style 3D printers, but it clearly works if you're ready are tinkering. The only tools needed are a vise (optional), hacksaw, sandpaper or files, and precision measurements. I used my calipers to measure and draw a line across the part to be cut, then clamped it in a vice and sawed it with a hacksaw. Then I removed the burrs and cleaned the surface with files. With this change, longer lk4, lk4 pro, lk5 pro or their clones like alfawise u30 and u30 pro, among others, fit. I also took the liberty of replacing the tensioners on the new tensioners with black ones because, like flame decals and fart cans on Hondas, the look means better performance.