This is my first attempt to create something useful in blender. Quite awkward, but hoping someone will find a use for this. The source I used was designed for a smaller frame size, so I increased the range between holes to 30mm to suit Belka v2 frames. In the future i'm hoping to have this part improved.

Kingroon

Kingroon KP3S

Doesn't Matter

0.2mm

20%