Blower assembly:

What works: The handle is supposed to rotate in hand, it does this. It uses a press-fit pin that is removable.

The gears work, they rotate smoothly.

There is a press-fit mechanism joining the handle to the large gear, this works. A small gear and the fan press fit together well.

The design stays in place and can be assembled.

What doesn’t work: The fan is not powerful and I can hardly feel it.

The External case components do not stay together.