Twisted Brushes Construction

Twisted brushes are manufactured by twisting layers of bristle between stem wires. There are three different stem constructions, each offering various strength and density characteristics:

• Single-Stem, Single-Spiral consists of a single layer of filament twisted between two stem wires.

• Double-Stem, Single-Spiral brushes have one layer of filament twisted between four stem wires with two stem wires on each side for additional strength and higher density fill.
• Double-Stem, Double-Spiral uses two layers of filament twisted between four stem wires. Each filament layer is perpendicular to the other with a single stem wire in each quadrant. This is the highest brush density and highest strength twisted brush available.

Shapes and Styles

There are three classifications of twisted brushes, determined by the brush diameter:

• Miniature brushes have a diameter of .250” or smaller and are generally made with a finer stem wire and are available in metric sizes from 1.0mm to 6.5mm brush diameters and standard inch sizes from .020” to .250” diameters.
• Hand brushes have a diameter of .125” or larger and are made with larger stem wire for manual cleaning. Some hand brushes can be power driven by cutting off the loop for more aggressive applications.
• Power brushes have a diameter of .250” or larger, are generally made more rigid and use a bigger stem wire to be power driven in a drill, drill press or CNC machining center.