My Bukito printer comes with flower screw (thumbwheel) for leveling the bed. I wanted to have a finer control in rotating these screws when leveling the print bed and thought I can do that with a wrench instead of fingers.I used PLA, 40% in-fill and 100mm/sec on Bukito. The dimensions were provided by support team from Deezmakers. I added a tolerance of 0.1mm and it fits nicely (just enough spacing to easily slide without disturbing the screw). I used higher infill rate thinking I might need more strength but it looks like 15% will just do fine.