This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/j1CbMbfFPbe
Needed cover for scissors...so here it is.
...it may be stretched and widened for your needed.
Let me know how yours works out. If you have any suggestions or questions please let me know. Enjoy!
Pictured are two different hole sizes to show file versatility.
Used internal support to allow the inside to be smoother...used 0.1 mm gap between 5% infill and part set for line
Pulled out infill easily.
Used Tinkercad and Cura....copy file in Tinkercad and ungroup to see construction steps.