Take a really bright flashlight, close it in the box and turn the lights out so the room is completely dark. Does any light leak out? If so then the box is probably not right for the job.
Take a really bright flashlight, close it in the box and turn the lights out so the room is completely dark. Does any light leak out? If so then the box is probably not right for the job.
I thought it was a tampon joke!
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