Abrasive Brushes Design Specifications

Brush density and length of fill material are important characteristics for designing your brush tool. Brush density appearance can be affected by the filament shape and can be produced with a round crimp, round level (straight) or rectangular shape.

• Round crimp has a wave in the filament which provides a denser brush appearance and produces a continuous and more even brushing action. Crimp is measured by the amplitude, depth of the crimp and frequency and number of crimps per inch.
• Level or straight fill provides a less dense appearance. The exposed view of the filament is known as the trim length and is the working strength of the brush.
• Rectangular fill material applies approximately 18 times more abrasion on a surface because it makes solid line contact. It works best for heavy-duty applications.