Today was the first day that I used my newly rebuilt Vulfix Burlington brush. The old knot had failed but I like the handle very much so a rebuild was in order. After removing the old knot I contacted Rudy Vey about this knot and another one which I will discuss at another time.
I decided to install a 21 mm Shavemac Do1 extreme flattop knot. With only one shave, I can tell that this will be one fantastic brush.