I’ve been using the same old brushes for more than a year now on our “Profimaster Robot Model 2712”. They are a little misdesigned, as the brushes go under the wheels of the robot, which makes them tare.
I fixed the brushes with some Sugru™ and bristles from a simple wallpaper brush, which I used to hang the Open Streetmap Wallpaper.
Here are the pictures of the build and a video of the result:
