This is a drop-in replacement for the original BigBox camera mount. I think the original was tilted down at 5 degrees, so, in additional to also rounding all the edges, this mount offers rounded edges, a selection of down-angles, and bosses for the screws to go into.
Should you wish to print a custom angle, the model is available here:
If you go beyond a 9 degree tilt, you may need to re-work the model to add additional thickness to prevent the screw protruding.
The 6 degree down angle is shown in the images, along with its view of the bed.
A rounded version of the snap-on piece is also added.