ASTM D7801-12

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Designation: D7801 − 12
Standard Terminology for
Paint Brush Application Tools
This standard is issued under the fixed designation D7801; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope chisel trim, n—a brush making process in which the tip of the
brush is mechanically (cut or sheared) shaped to a domed
1.1 This standard establishes the definitions for terminology
profile.
used in testing and manufacturing of paint brushes.
1.2 This standard does not purport to address all of the
cut-in, v—to carefully paint an edge to avoid spreading paint
safety concerns, if any, associated with its use. It is the
onto an adjacent area.
responsibility of the user of this standard to establish appro-
feathering, n—for painting, to reduce the thickness of a wet,
priate safety and health practices and determine the applica-
coated region (such as using the strokes of a relatively dry
bility of regulatory limitations prior to use.
brush) so that the edge fades off or softens.
2. Referenced Documents
fishtail, n—a condition in which the center filaments of a brush
2.1 ASTM Standards:
wear down more than the filaments on the side of the brush.
D5068 Practice for Preparation of Paint Brushes for Evalu-
ation
formed chisel, n—a property of a brush produced by a brush
D5301 Practice for Physical Characterization of Paint
making process in which the filaments are assembled,
Brushes
formed and bound at the butt end to produce a domed
D7073 Guide for Application and Evaluation of Brush and
(beveled) profile at the tip end.
Roller Applied Paint Films
formulation, n—a specification that gives the ingredients and
3. Terminology
amounts or process.
3.1 Definitions:
heeling, n—for paint brush filaments, reduction of brush
brush ferrule, n—the fitting that houses the butt end of the
performance caused by paint hardening in the handle (heel)
filament and secures it to the handle.
end of the filament bundle.
brush filling material, n—a set of aligned filament (whether
length clear, n—the length of the filament exposed from the
natural hair, plant fibers or synthetic) used to provide the
ferrule edge to the tip of the brush filament.
brushing portion of a paint brush.
snap, n—for paint brush filaments,theflexibilityandresiliency
brush stiffness, n—force r
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