Turnbuckle for M4 nut / rope lock / tensioner

thingiverse

With this turnbuckle, you can quickly and easily adjust a rope or lace or string to the exact tension you need. Simply add an M4 hook and an M4 nut, and you're good to go. To give my Rostock printer rock-solid stability, I added diagonal strings to the frame. This clever turnbuckle was designed specifically for this task - it makes tightening these strings a breeze! Just be sure to tighten all of them evenly so you don't put any undue stress on the frame. And remember, after making any adjustments, you'll want to re-calibrate your printer. I discovered that before adding diagonal strings, I could move the hotend by hand in a 10mm circle due to its somewhat flimsy construction. But with these stabilizing strings in place, I can now easily position the hotend over the bed within a precision 3mm circle - it's a huge improvement!