Im looking at a new silvertip brush but dont know if I should go with 50mm or 55mm loft on a 24mm knot. So what do y'all think is better? Im dont do much face lathering, Im just tired of my current 24/60 swallowing my face.
2:1 loft mm to knot mm seems to work...
Loft height is relative to many factors, the most important of which is how you intend to use the brush, for face lathering or for building a lather in a bowl. Longer loft for bowl lathering. Longer lofts of softer hair typically do better creating lather in a shaving bowl. Shorter or stiffer seem to work better as face lathering brushes
equally important is the ratio of the knot size to the loft. to maintain the same feel. As the knot increases in size so must the loft otherwise the brush becomes stiffer.
The knot shape is also a factor. Fan knots are by nature a little firmer than bulb knots so can be shorter loft than a bulb knot of the same diameter
The type of hair that is used will effect what the loft dimension is. Stiffer hair like Pure badger can be longer and still retain firmness, Two band is firmer than three band, silver tip and finer hairs need to be shorter than coarser best to maintain the same feel. There are also variations in quality between the same type of hair.
there are so many variables that "Pick this or that" is way to simplified.
Brush designing should be left to those who know what they are doing when putting together the knot so that they know what they need to set it at.
This is why I don't restore or design shaving brushes. My trash can is just to small to hold all of the trial and error necessary to develop a high quality shaving brush
Loft height is relative to many factors, the most important of which is how you intend to use the brush, for face lathering or for building a lather in a bowl. Longer loft for bowl lathering. Longer lofts of softer hair typically do better creating lather in a shaving bowl. Shorter or stiffer seem to work better as face lathering brushes
equally important is the ratio of the knot size to the loft. to maintain the same feel. As the knot increases in size so must the loft otherwise the brush becomes stiffer.
The knot shape is also a factor. Fan knots are by nature a little firmer than bulb knots so can be shorter loft than a bulb knot of the same diameter
The type of hair that is used will effect what the loft dimension is. Stiffer hair like Pure badger can be longer and still retain firmness, Two band is firmer than three band, silver tip and finer hairs need to be shorter than coarser best to maintain the same feel. There are also variations in quality between the same type of hair.
there are so many variables that "Pick this or that" is way to simplified.
Brush designing should be left to those who know what they are doing when putting together the knot so that they know what they need to set it at.
This is why I don't restore or design shaving brushes. My trash can is just to small to hold all of the trial and error necessary to develop a high quality shaving brush