How to Measure a Lobster Claw Clasp for Perfectly Fitted Jewelry

As a jeweler ensuring your pieces fit comfortably and securely is one of the most important details. An ill-fitting lobster claw clasp can ruin the entire look and feel of an otherwise beautiful jewelry design. Taking accurate measurements of your lobster claw clasps is crucial to creating properly fitted necklaces bracelets, and other pieces.

In this comprehensive guide, we will walk through everything you need to know about measuring lobster claw clasps You’ll learn about the different parts of a lobster clasp, the tools you need, how to measure each component, and tips for attaching the clasp Follow along to master lobster claw clasp measuring!

Overview of Lobster Claw Clasps

First, let’s review the basic anatomy of a lobster claw clasp. This popular style of jewelry clasp gets its name from its pincer-like shape, similar to a lobster’s claw. Here are the main components:

• Claw: The “claw” piece is what grabs onto the jump ring or chain. It has a lever that opens the claw to attach it.

• Ring: The claw attaches to a small jump ring or D-ring on the other end.

• Spring: A small steel spring inside keeps the claw closed securely when not in use.

Lobster claw clasps come in a variety of sizes, shapes, and metals. When taking measurements, pay attention to the size markings to select your ideal clasp.

Why Proper Lobster Claw Clasp Measurement Matters

Measuring your lobster claw clasp properly before attaching it to your jewelry is crucial for several reasons:

• Ensures proper fit and comfort: The right size clasp prevents pinching or slipping off.

• Allows you to select the ideal size for your design.

• Results in a secure closure so pieces don’t fall off.

• Provides an accurate measurement for reproduction.

• Prevents you from wasting clasps by having to size up or down after the fact.

Taking those few extra minutes to measure precisely will pay off with jewelry that looks and feels fantastic!

Helpful Tools for Measuring Lobster Claw Clasps

To take proper and consistent measurements, it’s important to have the right tools on hand:

• Digital caliper: Provides extremely precise interior and exterior diameter measurements.

• Millimeter ruler: Good for measuring length and diameters quickly.

• Cloth measuring tape: Useful for determining chain lengths.

• Wire or string: Can measure length by laying it across the component.

• Magnifier: Lets you inspect tiny size markings.

Investing in a few basic measuring tools will make a big difference in your ability to size lobster claw clasps flawlessly.

How to Measure the Length of a Lobster Claw Clasp

When sizing a lobster claw for a necklace, bracelet or other piece, you first need to determine the proper overall length:

1. Lay the clasp flat against a ruler or measuring tape.

2. Measure from the very tip of the claw to the outermost edge where you’ll attach the jump ring.

3. For a piece with an extender chain, measure from the tip of the claw to the outer link where you’ll attach the clasp.

4. Round your measurement up to the nearest whole millimeter or 1/16 inch.

5. Add 2-3 mm if using larger beads over 8mm to allow a comfortable amount of space.

Measuring lengthwise from tip to link gives you the exact size clasp you need for proper fitting jewelry.

Measuring the Diameter of the Lobster Claw Clasp

In addition to length, you also need to measure the diameter or thickness of the lobster claw:

1. Use your digital calipers to measure the outer diameter of the claw at its widest point.

2. For a quick measurement, use your millimeter ruler to gauge the outer diameter.

3. Make a note of the diameter – this ensures you select a jump ring and chain width that accommodate the clasp size.

4. Pay attention to the dimensions listed in size charts to pick the right diameter.

Knowing the precise diameter helps you pair the lobster claw with compatible rings, chains, and other findings.

Sizing the Ring for a Lobster Claw Clasp

The lobster claw attaches to a small jump ring or D-ring on your jewelry piece. Follow these tips for sizing the ring correctly:

• The ring should be slightly smaller in diameter than the clasp claw. For an 11mm claw, use a 9-10mm ring.

• Measure the exact outer diameter of the ring with digital calipers for best accuracy.

• Choose a jump ring with an inner diameter (ID) small enough to fit inside the lobster claw.

• Test connecting the ring and claw to ensure a snug, secure fit.

Matching your claw and ring sizes is crucial for getting a perfect closure without gaps.

Allow Extra Length for Extender Chains

For necklaces or bracelets with extender chains that allow adjustable sizing, keep these measurement tips in mind:

• Measure from the tip of the claw to the outer link where you’ll attach the clasp.

• Add an extra 5-10mm of length to allow for the extender chain.

• Consider the size of the largest bead/component when adding extra length.

• Test the fit on yourself or a mannequin at the shortest and longest settings.

Building in extra length for the extender chain means your clasp won’t be stretched tight or pull uncomfortably.

Tips for Attaching a Lobster Claw Clasp

Once you’ve measured your lobster claw clasp components accurately, it’s time to attach the clasp to your piece. Follow these pro tips:

• Use chain nose and round nose pliers in the right sizes for your clasp.

• Open jump rings and D-rings carefully using pliers to grip each side.

• After threading the clasp onto the chain, close rings completely so they are flush.

• For added security, consider soldering your clasp closed.

• Always test the clasp for a secure closure before finishing your piece.

With the right technique, your lobster claw clasp will have a seamless, long-lasting connection to your jewelry.

Achieve a Perfect Fit with Proper Lobster Claw Measurements

Taking the time to accurately measure your lobster claw clasps is one of the most valuable steps in jewelry making. Even a millimeter size difference can drastically affect the fit and feel. Follow this guide to measure clasp length, diameter, ring size, and attachments successfully.

The beauty of your carefully crafted jewelry deserves a perfectly sized lobster claw clasp closure. Your customers will appreciate the comfortable, secure fit achieved through precision measurements. With the right tools and techniques, you’ll soon be an expert at sizing lobster claw clasps for flawless wearing experiences.