This is a Remix from the great design of Matt Stultz.
I wanted to have a version that you can easily print without any supports. So I exchanged the steep rounded edges by a 45° face at the long sides and a less steep curve on the short sides, that you can print the handle with the two fixing points upwards.
Since the circle of the drillings would be bridged in free space (would cause nasty bridging in the holes) I added a bridging friendly support by design (see pictures, no need for printed supports here)
Layer Height: 0.2mm
Infill: 30% Gyroid
Perimeter: 4
Supports: no
Print time: ~5hrs with standard 0.2m quality PrusaMini Profile speeds
I added a Layer modifier from heigth 45.0mm - 50.0mm @0.2mm with additional Infill option 100% that the handle withstands the force of the screw.
As the links won't fit for germany, I took this and they worked well:
https://www.amazon.de/gp/product/B01MS967IR/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
https://www.amazon.de/gp/product/B078XMHQ3Z/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
The author remixed this model.