In edge preparation, the use of nylon abrasive brushes is the most effective way to produce a highly controlled, specific edge prep on the edge of any cutting tool or similar instrument. Unlike other methods – such as drag finishing or blasting – the nylon abrasive brush can be angled and focused on a specific area of the tool, as well as kept away from areas not to be touched by the abrasive material. And given that the visual evidence of reduced diameter or density of a brush is obvious to the machine operator, the breakdown of the media is more predictable versus the breakdown of mass-finishing media size, shape, chemistry, etc. In short, nylon abrasive brushes have proven to be enormously effective and efficient in edge honing. As such, MET considers the use of nylon brush media with nearly every edge-prep system we design and build. The following is information about nylon brushes in general.
A nylon abrasive brush is assembled using filaments of specific combinations (nylon and other abrasives). The filaments are commonly produced by mixing nylon with some type of abrasive material and extruding filaments from the mixture. Through this process, different volumes of the abrasive material can be added to the mixture to make the resulting filament aggressive. The filaments can be manufactured in many shapes, sizes, and different abrasive qualities.
In edge-honing, the abrasive brush works only when it is running perpendicular to the edge desired to be prepped. The more squarely it is presented, the more predictable and even the result. A nylon abrasive brush is unique in that it has two aspects of cutting. The first aspect is the cut achieved by the actual abrasive material inherent to the brush. The second is the impact or the force that is applied based on the diameter or type of bristle. Effectively, the result is gained by the impact and cut – and this result is something we take into consideration when creating the nylon brush media for our edge-prep systems.
Nylon abrasive brushes are specific to edge prep, given that part tolerances in edge prep are typically within .0001″ and can be only held to that measure with the correct machine and process. By starting with a common and predictable edge, consistent results can be obtained using abrasive nylon brushes that have been designed to affect a predictable, consistent result.