Connection box for flood lights

I use flood light a lot and it happens pretty often to break these small connection boxes on their back. I can't just buy the box to replace, I have to waste the whole light.
I decided then to print some of these connection boxes. I started measuring the existing boxes, thinking how to make them stronger. I didn't draw the lid because they never break (and they have a rubber seal in them).
They don't meet the Australian standard as they are not certified, so I don't take any responsibility. I just made them as a learning project. Don't play with electrical connection if you are not a qualified electrician!