Hi mate,
Good find for the money
However, I'm just gonna put my health and safety hat on for a min
I work with lasers daily, similar to yours in the way it works, just with a larger cutting bed etc. And I gotta say, I was amazed/scared/shocked how the laser still worked when you opened the lid and put your camera in there.
This is a massive no no, and I can only assume something is set up wrong. You'll probably find that the plastic lid is produced to stop any 'leaks' that bounce off, so dont open the lid in use. The ones I use are triggered to stop cutting if the lid opens even fractionally.
So, if you like your eyes - dont do it.
.....*removes hat
On another note - I take requests