Designed this Minimalist x axis tensioner for my ender 3, i made it as small as possible to not have a distracting look when installed on the printer. It tensions using an m3 bolt/nut and an allen key.
A couple notes:
Assembly instructions(not including mounting to printer as that step is pretty much straightforward), as well as the Bill of Materials is included in the photos section
The author marked this model as their own original creation. Imported from Thingiverse.