Anyway, I needed this kind of dust collector because the grinder generates sparks and all sorts of interesting things can come from sparks. As you can see, it's connected to a funnel-like object that is suppose to suck all the dust in.
Now it's making sparks all the time, near and far, so it seems to me that there might be a more efficient way to do this.
So now I let it percolate in my pea brain until I can get a better idea of what it's suppose to look like.
This is how projects start; sometimes they don't get finished.