The standard defines specifications for wooden handles intended for woodworking chisels and gouges, detailing the required dimensions, material qualities, craftsmanship, and surface finishing. It also addresses the fitment of metal ferrules and the oil treatment process to improve handle durability, catering to manufacturers, inspectors, and users in the woodworking sector.
Overview
The standard defines specifications for wooden handles intended for woodworking chisels and gouges, detailing the required dimensions, material qualities, craftsmanship, and surface finishing. It also addresses the fitment of metal ferrules and the oil treatment process to improve handle durability, catering to manufacturers, inspectors, and users in the woodworking sector.
Audience
Contents
Structure
This section outlines the scope of wooden handles and ferrules for chisels and gouges, specifying compliance with dimensional requirements presented in detailed tables and illustrative sketches.
Summarizes key related standards including timber classifications, dimensional criteria, and marking regulations essential for manufacturing and inspection.
Provides definitions aligned with IS 707:1976 to ensure consistent understanding of terms related to wooden tool handles.
Details the types and treatments of timber and mild steel components required, including sheet thickness tolerances and ferrule construction.
Presents tables with precise measurements and allowed tolerances for various handle sizes to ensure ergonomic and functional adequacy.
Explains the acceptable tolerances at critical points and other areas to maintain manufacturing quality and fit.
Describes workmanship standards, including smooth finishing for comfort and ferrule specifications to ensure secure attachment.
Specifies the oil soaking process and other treatment methods intended to enhance the durability and service life of the wooden handles.
Details marking requirements including manufacturer identification, production year, and the option to display the BIS Standard Mark under regulatory compliance.
Outlines inspection methods including dimensional verification, visual checks, and treatment efficacy to guarantee quality and safety before release.
Frequently Asked
The standard references Class V timber in IS 620 (1985), approving hardwoods such as ash, beech, oak, hickory, teak, and other woods with comparable strength and durability. Quality criteria include a moisture content not exceeding 15%, grain deviation limited to 1 in 20, and freedom from defects like heartwood pith, decay, splits (except hair splits), borer holes, and warping to ensure handle strength and longevity.
Handles are manufactured in five sizes with detailed dimensions covering length, width, thickness, and ferrule fitting parameters as indicated in the standard’s tables. Dimension 'M' carries a tighter tolerance of ±1 mm, while other measurements allow ±2 mm. Ferrules are made from mild steel seamless or welded tubes with a thickness of 2.5 ± 0.3 mm, ensuring a snug and secure fit.
Ferrules must be fabricated from mild steel seamless tubes or butt-welded sheets with a specified thickness of 2.5 ± 0.3 mm. Welding should be executed cleanly and soundly. Ferrules are to be tightly fitted onto the wooden handles following the dimensional and design requirements outlined in the standard’s tables and illustrations, ensuring secure attachment and tool safety.
Post-inspection, handles should be immersed in hot raw linseed oil heated to approximately 90°C for one hour to saturate the wood fibers. After soaking, the handles are drained thoroughly and wiped dry. Additionally, ferrules are coated with red oxide paint to prevent corrosion. These treatments reduce moisture absorption, enhance wear resistance, and contribute to extended handle lifespan.
Yes, the standard mandates comprehensive inspections including dimensional compliance checks against specified tables, visual examination for surface smoothness and defects, and verification of treatment processes such as oil soaking and ferrule coating. Marking with the BIS Standard Mark is also an indicator of adherence to quality and safety requirements, ensuring the handles meet ergonomic and durability standards.
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