Bike Bottle Handle Mount Adapter

I want to create a fully printed Bike Bottle holder for my bike on the handlebar.
I am using [439490]'s bottle cage and [1255680]'s handlebar adapter.
However, I found that handlebar adapter is too weak if you print less 30% infill.
So I tried to print at 80% on my AIO Robotics Zeus 3D printer. It's stronger but it break at opening side.
I re-design it with two piece clamp using M5 screw. Everything also reinforced.
I also add serration in the inner cycle and hope it will add a little bite