Wooden handles for adzes
1992 Edition

Overview of IS 2893 Scope and Essential Parameters

Scope: This standard defines the specifications for wooden handles used with adzes, focusing on dimensional accuracy, tolerances, and marking to maintain quality control.

Tolerances (Clause 6.2)

Dimensions for Adze Handles (Clause 1.5) — Measurements in mm

Related Standards (Clause 2.1)

• IS 620:1985 — General specifications for wooden tool handles
• IS 663:1980 — Specifications for adzes

Notes

• All dimensions are given in millimeters.
• Use of the Standard Mark is regulated under BIS guidelines.
• Periodic updates ensure adherence to latest quality norms.

flowchart LR
    A[Scope of IS 2893] --> B[Tolerances]
    A --> C[Handle Dimensions]
    A --> D[Referenced Standards]
    B --> E[Head Fit: +3/-0 mm]
    B --> F[Other Areas: ±2 mm]
    B --> G[Length: ±5 mm]
    C --> H[Mass 0.75-1.25 kg]
    C --> I[Mass 2.00 kg]
    D --> J[IS 620: Wooden Handles]
    D --> K[IS 663: Adzes]

This summary highlights vital dimensional and tolerance specifications for wooden adze handles per IS 2893.

Summary of References in IS 2893

Principal Indian Standards Cited

• IS 620:1985 — General requirements for wooden tool handles
• IS 663:1980 — Specifications for adzes

Dimensional Data for Adze Handles (Clause 1.5)

Tolerances (Clause 6.2)

• Head fitting section: +3 mm / -0 mm
• Other sections: ±2 mm
• Length: ±5 mm

Additional Information

• Refer to IS 620 for terminology and general handle requirements.
• The Standard Mark certifies compliance and quality under BIS oversight.
• For updates, consult BIS documentation (Doc No. CED 33 (5022)).

flowchart LR
    A[IS 2893] --> B[IS 620:1985 Wooden Handles]
    A --> C[IS 663:1980 Adzes]
    B --> D[Definitions & General Requirements]
    C --> E[Adze Specifications]
    A --> F[Dimensions & Tolerances]

This reference section ensures proper understanding of handle dimensions, tolerances, and related standards compliance.

Definitions and Core Details in IS 2893

• Definitions: As outlined in Clause 3.1, definitions conform to those in IS 620:1985 for wooden tool handles.

• Dimensional Specifications & Marking (Clause 1.5):

  • Measurements are expressed in millimeters.
  • Example dimensions for adze handles (Type A) by nominal mass:

• Permissible Variations (Clause 6.2):

• Associated Standards (Clause 2.1):
  • IS 620:1985 — Wooden tool handles
  • IS 663:1980 — Adzes

Notes:

• Definitions and quality requirements follow IS 620.
• Dimensions and tolerances ensure interchangeability and proper fitting.
• Use of Standard Mark is regulated under BIS legislation.

flowchart LR
    A[IS 2893 Definitions] --> B[Conform to IS 620:1985]
    B --> C[Wooden Tool Handle Standards]
    A --> D[Handle Dimensions & Marking]
    D --> E[Nominal Mass vs Dimensions]
    A --> F[Tolerances]
    F --> G[+3/-0 mm at head fit]
    F --> H[±2 mm other areas]
    F --> I[±5 mm length]

This section summarizes the crucial definitions and specifications.

IS 2893 Material Requirements and Dimensional Guidelines

1. Material and Dimension Details for Adze Handles (Clause 1.5)

• Measurements are provided in millimeters.
• Handles categorized as Type A and Type B.
• Example dimensions for Type A Handles (adze nominal mass 0.75 to 1.25 kg):

2. Allowed Variations (Clause 6.2)

• Head fitting area: +3 mm / -0 mm
• Other areas: ±2 mm
• Length: ±5 mm

3. Material Quality and Standards (Clauses 2.1, 7.1)

• Refer to:
  • IS 620:1985 — General requirements, workmanship, defects, testing, and treatment for wooden tool handles
  • IS 663:1980 — Specifications for adzes
• Surface finish, workmanship, and sampling must comply with IS 620:1985

Summary:

• Material quality and finish should conform to IS 620:1985.
• Use dimensional tables for proper sizing.
• Maintain tolerances as specified.
• Ensure BIS marking and quality compliance.

flowchart TD
    A[Select Adze Nominal Mass] --> B{Mass ≤ 1.25 kg?}
    B -- Yes --> C[Apply Type A Handle Dimensions]
    B -- No --> D[Apply Type B Handle Dimensions]
    C --> E[Verify Tolerances: +3/-0 mm at Head Fit]
    D --> E
    E --> F[Consult IS 620 for Material and Finish]

Key Points on Manufacture and Treatment per IS 2893

1. Craftsmanship and Surface Finish (Clause 7.1)

• Workmanship, permissible flaws, testing, treatment, and sampling should adhere to IS 620:1985.

2. Handle Treatment (Clause 5.2)

• Handles require treatment as outlined in IS 620:1985, Clause 5.1.1, typically including seasoning, preservation, and finishing.

3. Dimensional Tolerances (Clause 6.2)

4. Dimensions for Adze Handles (Clause 1.5)

Summary:

• Follow IS 620:1985 for manufacturing quality and treatment protocols.
• Maintain critical dimensional tolerances for proper tool fit.
• Handle sizes vary with nominal mass; treatment improves longevity.

For detailed procedures and testing, refer to IS 620:1985.

Summary of Dimensions and Tolerances in IS 2893

1. Tolerances (Clause 6.2)

2. Handle Dimensions (Clauses 6.1, Figures 1 & 2)

• All dimensions are in millimeters.
• Handles must meet these measurements for proper assembly and performance.

3. Additional Information

• Handles should be treated as per IS 620:1985 (Clause 5.2).
• Adherence to dimensions and tolerances ensures interchangeability and quality.

Visualization of Handle Dimensions

graph LR
A[Nominal Mass] -->|0.75,1.00,1.25 kg| D1[Dimensions: A=430, B=70, C=13, D=1.5, E=25, F=24, G=19]
A -->|2.00 kg| D2[Dimensions: A=480, B=90, C=13, D=3, E=32, F=30, G=25]

Apply these dimensions and tolerances during manufacturing and inspection of wooden adze handles according to IS 2893.

Summary of Other Requirements in IS 2893 (Clause 7)

1. Tolerances (Clause 6.2)

• Tool head fitting: +3 mm / -0 mm
• Other parts: ±2 mm
• Handle length: ±5 mm

2. Referenced Standards (Clause 2.1)

• IS 620:1985 — Specifications for wooden tool handles
• IS 663:1980 — Specifications for adzes

3. Dimensions for Adze Handles (Clause 1.5)

• Handles are designed complying with IS 620:1985 for quality and compatibility.

4. Marking and Quality Assurance

• Use of the Standard Mark is governed by BIS Act, 1986.
• BIS conducts ongoing inspections to ensure compliance.

Visual Guide to Tolerances

graph TD
    A[Tool Head Fit] -->|+3 mm / -0 mm| Tolerance1
    B[Other Areas] -->|±2 mm| Tolerance2
    C[Length] -->|±5 mm| Tolerance3

These points are essential to maintain adherence to IS 2893’s quality and dimensional standards for adze handles.

Sampling Procedures and Conformity Requirements under IS 2893

• Governing Standard: Sampling and conformity assessments refer to IS 620:1985, as indicated in Clauses 7.1 and 8.1 of IS 2893.

• Sampling Methodology: Representative samples should be selected per IS 620:1985 guidelines, which include:

  • Sampling strategies (random or systematic)
  • Determining sample sizes based on lot size and inspection level
  • Acceptance criteria based on predefined quality levels

• Compliance Criteria:

  • Handles must conform to dimensional tolerances specified in IS 2893 Table 6.2:

• Workmanship and Defects: Permissible defects, testing, and treatment requirements follow IS 620:1985 standards. Conformity is verified through visual inspection and specified testing.

Tolerance Summary (Clause 6.2)

Sampling Flowchart

flowchart TD
    A[Production Lot] --> B[Sampling per IS 620]
    B --> C{Does Sample Meet Criteria?}
    C -- Yes --> D[Accept Lot]
    C -- No --> E[Reject or Reinspect Lot]

This approach ensures quality control through statistically sound sampling and acceptance criteria.

Marking Protocols for Wooden Adze Handles as per IS 2893

Essential Marking Details (Clause 9.1)

• Each handle must bear a clear and permanent mark indicating:
  • Manufacturer's name, initials, or trademark
  • Year of production
  • Handle type and size according to the following codes:

• Optional: Handles can also be marked with the Standard Mark (BIS certification) as per Clause 9.1.1.

Handle Dimensions (Clause 1.5)

Tolerances (Clause 6.2)

Marking ensures consistency, traceability, and compliance with IS 2893 standards for wooden adze handles.