This standard outlines the specifications for wooden handles used in carpenters' augers, focusing on timber quality, dimensions, workmanship, and marking to guarantee durability and proper fit. It serves manufacturers, suppliers, and users by defining timber selection criteria, seasoning guidelines, tolerances, and identification requirements for reliable woodworking tool handles.
Overview
This standard outlines the specifications for wooden handles used in carpenters' augers, focusing on timber quality, dimensions, workmanship, and marking to guarantee durability and proper fit. It serves manufacturers, suppliers, and users by defining timber selection criteria, seasoning guidelines, tolerances, and identification requirements for reliable woodworking tool handles.
Audience
Contents
Structure
This section describes the requirements for wooden handles specifically designed for carpenters' augers, emphasizing durability, dimensions, and quality standards. It includes provisions for the ISI Certification Mark and adherence to SI units throughout measurements. The scope covers manufacturing, testing, and marking to ensure conformity with established woodworking tool standards.
This part lists the essential references including the ISI Certification guidelines and SI units with their conversions relevant to the standard. It also details the rounding off procedures as per IS 2-1960 to maintain consistency in test results. The section reinforces compliance through continuous inspection and certification by ISI.
Here, the standard specifies acceptable timber species as per IS 620:1975, requiring well-seasoned wood with moisture content between 8% and 15%. It forbids defects such as pith, decay, insect damage, and major splits, ensuring the wood’s structural integrity. Common species like teak, sal, and deodar are highlighted for their mechanical properties suitable for handle production.
This section mandates compliance with IS 620-1975 for workmanship, including permissible defects and finishing. It outlines taper ratios and dimensions for handles, ensuring ergonomic design and secure attachment to the auger. Marking requirements and quality assurance methods are also discussed to maintain standardization.
Specifications for overall length, tapered center length, and grip diameter for various nominal sizes are detailed here. Tolerances for fitting at the tool head and other sections are defined to ensure proper fit and function. Post-manufacture treatment like linseed oil dipping to reduce moisture variation is recommended for durability.
This part reiterates tolerances, rounding off rules for test data, and workmanship standards referencing IS 620-1975. It emphasizes continuous quality monitoring, sampling procedures, and certification marks to uphold product reliability and conformity to the standard.
Handles must bear markings indicating the manufacturer’s identity, year of manufacture, and the size of the compatible auger. The optional ISI Certification Mark can be applied as a quality assurance symbol. This section ensures traceability and compliance with regulatory marking requirements.
Frequently Asked
As per the standard, handles should be crafted from timbers classified under Class V in IS 620:1975, such as Shisham (Dalbergia sissoo), Teak (Tectona grandis), Sal (Shorea robusta), and other comparable hardwoods. The timber must be well-seasoned, free from defects like knots or cracks, and provide the necessary strength and durability for tool handles. These requirements align with specifications for carpenters' augers compatibility under IS 2852:1964.
The handles are to conform to specified overall lengths, tapered center lengths, and grip diameters that vary according to nominal size, with tapering at a ratio of 1:30 on the diameter. Tolerances are set at +3 mm / -0 mm for the tool head fit and ±2 mm for other sections. Additionally, newly manufactured handles should be treated by dipping in raw linseed oil to stabilize moisture content, with workmanship adhering to IS 620-1975 standards.
Immediately following manufacture, handles ought to be immersed in raw linseed oil at ambient temperature. This treatment slows moisture fluctuations, preserving dimensional stability and enhancing durability. It is critical that the handles originate from well-seasoned blanks with moisture content between 8% and 15%, free of defects to ensure longevity and performance.
Wood blanks must be free from central pith, decay, insect damage, borer holes, warping, and significant splits or shakes. Only very fine hair splits on the surface are permitted before manufacturing. These requirements ensure the blanks' structural soundness and are consistent with permissible defect criteria outlined in IS 620-1975.
Handles must display the manufacturer's name, initials, or registered trademark, the year of production, and the size of the carpenters' auger they fit. Optionally, the ISI Certification Mark may be included to indicate conformity with quality and inspection standards governed by the Indian Standards Institution. These markings facilitate traceability and assure compliance.
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