Now it’s time to unveil the mysterious device! 😀

For this purpose, I must mount over the hard disk structure a very technological device: a mirror!

I glued some layers of poliver and a steel bar behind the mirror:

Then I covered the behind and the sharp edges with a printed drawing and some white tape:

The mirror position should be adjusted with precision, so I mounted it on this steel bar, to be able to rotating and moving it freely.

Well, now that you know that the mysterious device is a mirror, we can move on to something else…