BestTeam Vacuum Cleaner Engraving Machine Dust Cover, 70mm/100mm Brush Vacuum Cleaner Engraving Machine Dust Cover for CNC Router for Spindle Motor Milling Machine (1M*100MM, Black)

Good enough for my needs on my DIY dust adapter for my HSD spindle. I haven't seen any significant number of bristles coming out at all given my cheap way of securing it to the plywood with just a few screws. My video shows some dust laying around but that's because I do not have the brushes on the back side of my spindle. I'm just happy that I capture all of the fine dust.

Groucho's mustache just wasn't cutting it, so I had to go with something longer/better for my CNC. I bought two lengths of brush to make two sizes of dust shoe. The longer brush (100mm?) works great for my 3" and 4" bits. But ... I found that my shop vac would suck up the brushes and block/reduce suction so I added a 1" strip of cardboard tube to support the brush and stop the blockage. (see pics.) I had concerns that the longer brush would hang up on hold down clamps but that hasn't been a problem so far. Also, the brush is flexible enough to bend when I'm doing a deeper carve (1-1/2" to 2-1/2")

Using this for the cnc machine I'm building, good price, but you can tell it's made in some sweatshop, where "good enough" is good enough. Excess glue on the exterior, lines are not very straight, but it will work.

It works great as a door sweep. That's what we got it for.

used in diy dc brush on a cnc router, works good for that

Bristles are very stiff. I have a decently rigid machine and can cut 1/2 aluminum plate with it, but when cutting 3/4 in plywood with a 1/4 in endmill, these bristles are so stiff that by the time I get down to that 3/4 in the pressure from the bristles has my z gantry out of tram badly

I built a router sled and this helps cut down the mess

Exceeded expectations.