I printed some LED panels for me but also some as a gift. In order not to complicate the printing unnecessarily, I made a small compartment for the back wall of such LED lamps. I often only use small LED strips that have a battery compartment and I designed the box to make it look minimal and easy to swap the batteries.
The internal dimensions are 23.20 mm x 53mm. Any standard box should actually fit in there. Gluing it to the bottom end also gives the lamp even more support.
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