Instead of a metal channel strip brush that is wound around a shaft, the cylinder brush with a solid shaft is an epoxy wound brush, also known as a string wound brush — one that has filaments attached using strings covered in epoxy glue.
A series of strings pass through the epoxy glue, then those strings are wrapped around a shaft one on top of the other. One string winds around the shaft, then the next string winds around that string, and so on in a process that carries this winding out simultaneously. Filaments are placed between the strings and secured in place by the epoxy.
The epoxy wound brush is then cured overnight and the filaments are bonded in place. Each filament securely extends straight out of the brush and is not mechanically held around a center wire as are metal channel brushes.
The solid shaft core type of this cylinder brush refers to the single, solid shaft that goes through the brush. Sometimes there is a weight limit on brushes of this type, so that may be a consideration if you require a very large brush.
These brushes are available in a wide variety of customer specifications, and cores can also be sent in for rewrapping.
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