Cleaning Brush for vacuum robot

This cleaning brush for vacuum robots has a cutter blade integrated. 

The blade can be easily broken off from a cutter blade. It is best to hold the cutter blade with a pair of pliers. I recommend wearing protective glasses here.

If the blade cannot be pressed all the way into the brush, use a soldering iron and melt the blade in with it.

To connect the two parts of the brush, two M3x15 bolts and M3 nuts are necessary.