There was an accident during this.

The blower is mounted to the base via a spring. That gives visual feedback for the amount of thrust it produces (not much). Because of no dampener, the thing oscillates easily.

When I wasn't careful enough switching it on, it got wobbling so far that it touched the microphone. Then comes a huge spark (mike is grounded through the soundcard of the PC). That spark made my PC reboot instantly, as if I had pressed reset button. And then I was shocked as if I was hit by that spark, when I found out that the sound card is intact! Phew!..