I would think that 4 knots could be purchased and carved down to 4 slats.
Just because it can be done, doesn't mean it should be done.The patents must be expired..... I no NOTHING of the process, but could that brush be 3D printed do y'all think?
It would be easier just to harvest the hair from one or two knots than cut rectangles out of existing knots. I played around with this idea back when I first got a fold-a-brush set years ago. The original brush was set in vulcanized rubber and wrapped with stamped brass. The only benefit is faster drying time. In exchange, you give up a comfortable handle.I would think that 4 knots could be purchased and carved down to 4 slats.