I built a dust shoe for my machine and I could use a stiffer brush for it does anyone have a source for a good flexible brush? The one I have is from McMaster Carr and is 3" long and designed to slide into a groove .200" wide but I could use a different style. The problem I am having is it gets sucked under because it is not stiff enough.

This is the one I have now https://www.mcmaster.com/#7900t2/=19bxiut


Thanks Mike