Light bulb filled with concrete

I saw a post once where someone had created a concrete light bulb removing the end and filling the glass with concrete and removing the glass once it was set. here is my attempt. I think it is not too bad it is now hanging in my office at work.

There was some small airbubbles in the mix.

The flash fills in all of the air bubbles.

 

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Now playing: Devo – What We Do
via FoxyTunes

Test video posted

I was playing with my Arduino processor and posted a video or a RC servo interfaced with a joystick.