I owned a Semogue Owners Club cherrywood boar brush and was never happy with its performance. The Semogue SOC brushes are famous for their immense bloom once they have been broken in. They also are noted for being softer boar than Omegas even though both companies use good quality bristle and their 24mm brushes seem to have similar lofts. I was curious why the differences. Here a couple photos with my own SOC showing that bloom: My own SOC 24mm boar brush seemed to have less backbone than even my equivalent sized 24mm badger or synthetic brushes and often failed to hold enough soap for enough passes. When it started shedding that was the last straw. I decided to remove the knot and replace it with a 24mm Tuxedo, after comparing the Tuxedo to the size of the metal ring holding the boar knot and confirming that there was clearly enough room. It didn't go so well. After cutting off the hair flush with the metal rim, I was unable to chisel the rest of the knot out of the metal cup, although I did manage to dig into my own finger. So I contacted Jason @jtspartan and shipped the whole mess off to him. Jason cleaned the knot out of the metal cupholder, then installed the Tuxedo knot in its place. However, to install my 24mm Tuxedo knot in place of the original 24mm boar knot, Jason eventually had to bore out the entire metal knotholder. The reason? The cupholder was not a parallel-sided cylinder 24mm wide throughout its entire depth but a slope-sided truncated cone that was 24mm at the mouth but only about 20mm at the base. This means that the "24mm" SOC boar is NOT a true 24mm knot held tightly together until it exits the handle (like a 24mm Omega). Instead it is actually a 20mm knot set so that it starts to splay right from its base and has already reached a spread of 24mm when it exits the handle. This explains the famous wide bloom of the SOC as well as its softer backbone than an Omega -- the brush is less dense and is already loosening and spreading out even before it exits the base of the handle. The boar bristles themselves are probably no different than those in an Omega, they are just less densely packed. And it also explains why I found the performance of this "24mm" brush less effective than my other 24mm brushes -- it is really a 20mm trying to mimic the size and shape of a 24mm. Interesting what you can learn when you take something apart... BTW, I should have my new true 24mm Semogue Owners Club cherrywood Tuxedo brush back in my hands in a week or so. From the photos, I think it will look fantastic. I will post pics on this thread when it arrives.