Saw and pierce jewellery components — City and Guilds of London Institute QCF Manufacturing & Engineering Revision

    This subtopic focuses on the essential jewellery-making skill of sawing and piercing, which involves cutting intricate shapes and internal openings in meta

    Topic Synopsis

    This subtopic focuses on the essential jewellery-making skill of sawing and piercing, which involves cutting intricate shapes and internal openings in metal using a jeweller's saw. It covers the selection of appropriate saw blades, correct frame tensioning, safe workholding methods, and precise execution of complex designs, all critical for producing bespoke settings and decorative components in gem-set jewellery. Mastery of this technique underpins the ability to fabricate high-quality, professional pieces required at Level 3.

    Key Concepts & Core Principles

    Exam Tips & Revision Strategies

    Common Misconceptions & Mistakes to Avoid

    Examiner Marking Points

    Saw and pierce jewellery components

    CITY AND GUILDS OF LONDON INSTITUTE
    vocational

    This subtopic focuses on the essential jewellery-making skill of sawing and piercing, which involves cutting intricate shapes and internal openings in metal using a jeweller's saw. It covers the selection of appropriate saw blades, correct frame tensioning, safe workholding methods, and precise execution of complex designs, all critical for producing bespoke settings and decorative components in gem-set jewellery. Mastery of this technique underpins the ability to fabricate high-quality, professional pieces required at Level 3.

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    Learning Outcomes
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    Assessment Guidance
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    Key Skills
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    Key Terms
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    Assessment Criteria

    Assessment criteria

    City & Guilds Level 3 Diploma in Gem Setting

    Topic Overview

    The City & Guilds Level 3 Diploma in Gem Setting is an advanced vocational qualification designed for aspiring jewellery professionals who wish to master the art of securely mounting gemstones into precious metal settings. This diploma covers a range of setting techniques, from basic claw settings to complex invisible and pave settings, ensuring students can handle both standard and bespoke pieces. The course emphasises precision, hand-eye coordination, and an understanding of gemstone properties to avoid damage during setting.

    This qualification is part of the Manufacturing & Engineering suite, bridging traditional craftsmanship with modern industry standards. Students will learn to read technical drawings, select appropriate tools, and apply correct setting methods for different gem cuts and metals. Mastery of these skills is essential for careers in fine jewellery manufacturing, repair, and custom design, where the quality of setting directly impacts the piece's value and durability.

    By the end of the diploma, students will be able to independently set a variety of gemstones in different mountings, troubleshoot common issues like stone breakage or misalignment, and work efficiently to industry timescales. The course also covers health and safety practices, including safe use of burs, gravers, and polishing equipment, ensuring a professional standard of work.

    Key Concepts

    Core ideas you must understand for this topic

    • →Gemstone anatomy and properties: understanding cleavage, hardness, and refractive index to select appropriate setting techniques and avoid damage.
    • →Setting types: claw, bezel, channel, pave, invisible, and tension settings, each with specific tooling and preparation methods.
    • →Tool selection and maintenance: using burs, gravers, pushers, and burnishers correctly, and sharpening gravers for clean cuts.
    • →Metal preparation: annealing, drilling, and creating seats or bearing edges to securely hold the stone.
    • →Quality control: checking for stone tightness, alignment, and finish; avoiding common defects like spinning stones or uneven claws.

    Learning Objectives

    What you need to know and understand

    • Understand how to saw and pierce complex jewellery components, Be able to saw and pierce complex jewellery components

    Assessment Criteria

    Key criteria assessors look for in your portfolio

    • Award credit for demonstrating correct selection of saw blade grade matched to metal type and thickness.
    • Look for precise cutting that follows the marked line with minimal deviation, requiring only light filing to finish.
    • Evidence of safe and secure workholding, using a bench peg or clamp, maintaining blade perpendicular to the workpiece.
    • Successful piercing of internal shapes, achieved through clean pilot hole drilling and blade threading without distorting the metal.
    • Consistent sawing rhythm and correct posture, indicating controlled hand movement and blade management.

    Assessment Guidance

    Guidance for achieving higher grades

    • 💡Plan the sequence of cuts: start internal piercings first, then external outlines, to maintain workpiece stability.
    • 💡Use a beeswax or BurLife lubricant on the blade routinely to reduce friction and improve cut smoothness.
    • 💡Maintain a steady, upright stance with the saw held vertically and the metal flat against the bench peg, moving the saw with long, smooth strokes.
    • 💡For intricate turns, saw slightly into the waste side before rounding the corner to create a sharper internal angle without overcutting.
    • 💡Practice blade threading by clamping the blade in the lower jaw, passing it up through a pilot hole, then securing the top jaw under correct tension.
    • 💡Pay close attention to the symmetry and alignment of claws or beads – examiners often deduct marks for uneven spacing or height, as it affects both aesthetics and security.
    • 💡Practice setting stones in scrap metal before attempting the final piece. This builds muscle memory and helps you gauge pressure and tool angles without risking expensive materials.
    • 💡Always document your process in a logbook, noting any adjustments or repairs. This shows reflective practice and can earn additional marks for problem-solving and professionalism.

    Common Mistakes

    Common errors to avoid in your coursework

    • Snapping blades frequently due to insufficient tensioning or twisting the saw frame during cuts.
    • Forcing the saw instead of letting the blade teeth cut naturally, leading to jagged edges and blade breakage.
    • Failing to lubricate the blade, causing overheating and premature wear, especially in thicker metals.
    • Deviating from the design line by not supporting the workpiece adequately or sawing at an incorrect angle.
    • Neglecting to drill adequate relief holes for sharp corners, resulting in blade binding or inability to turn cleanly.
    • Misconception: 'All gemstones can be set using the same technique.' Correction: Different stones require different approaches; for example, opals are brittle and need protective settings, while diamonds can withstand more pressure in claw settings.
    • Misconception: 'A tight setting is always better.' Correction: Over-tightening can cause stress fractures in stones, especially in channel settings. The stone should be secure but not forced.
    • Misconception: 'Gravers don't need sharpening often.' Correction: Dull gravers cause rough cuts and increase the risk of slipping, damaging both the metal and stone. Regular sharpening is essential for precision.

    Frequently Asked Questions

    Common questions students ask about this topic

    Before You Start

    Prior knowledge that will help with this topic

    • •Basic jewellery making skills, including sawing, filing, soldering, and polishing.
    • •Understanding of metal types and their properties (e.g., gold, silver, platinum).
    • •Familiarity with hand tools and workshop safety procedures.

    Key Terminology

    Essential terms to know

    • Understand how to saw and pierce complex jewellery components, Be able to saw and pierce complex jewellery components

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    Saw and pierce jewellery components (City and Guilds of London Institute QCF)