I built this last fall, but didn't get around to completing the video until today.
I drag my miter saw out, mostly when I need to cut lengths of wood that I cannot do easily on my table saw.
As such I made myself a kind of temporary mitre saw setup. Most of the time I'm just cutting at 90 degrees so I designed the box for that mode only. I didn't want to have a big box to store, so I made it fold and be as compact as possible.
It works really well and I barely have any uncollected dust.