Tool to replace LEDs in a LED Cube

Unfortunately I broke some LEDs in my 3D LED cube (see https://sites.google.com/view/flips-cubicle/home for details). The LED cube consists of blocks of 12 x 4 x 12 LEDs, so it is hardly possible to get hold of each single LED during replacement.

I developed a tool which holds an LED during unsoldering and keeps holding it when picking it out of the cube. To bring the new LED to the correct position, the tool holds a new LED at the correct position and aligns by picking two other LEDs.

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