Best Drill Hole Size for Resin Jewellery Findings

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Choosing the right drill hole size is essential for securely attaching findings such as bails, pins or screw eyes to your resin jewellery. The right fit ensures a professional finish and lasting hold without damaging your piece.

How to Select the Right Drill Hole Size

The ideal drill hole should be slightly smaller than the diameter of your chosen finding’s stem or screw post. This allows the fitting to grip tightly when glued or screwed in. To achieve this, measure your finding’s post with a caliper or compare it directly to your drill tips. For example, if your finding measures 1.2 mm in diameter, use a 1 mm or 1.1 mm drill bit for a snug fit.

The Mini Hand Drill comes with interchangeable tips from 0.8 mm to 3.0 mm, making it easy to match most standard jewellery findings with precision.

Drilling Tips for Resin Jewellery

Always drill slowly and steadily to prevent cracks or chips in your resin piece. Position the item securely and consider marking your drilling point with a felt tip pen for accuracy. For very small or delicate findings, start with the smallest tip and widen incrementally if needed. If you are new to this process, working with a beginner-friendly resin kit, like the Evershine Collection, provides both the material and precision tools required for seamless finishing.

When This Matters Most

Choosing the correct drill size is especially vital for lightweight earrings, charms or pendants—pieces frequently handled or worn. A poorly sized hole can cause the finding to loosen or the resin to crack, affecting both appearance and durability. Taking a moment to double-check size helps ensure long-lasting, professional jewellery results.

Related guides

What Drill Hole Should Be Made When Using Resins

Matching your drill hole to your chosen findings is a small step, but it makes a significant difference in the quality and appearance of your finished resin jewellery. For more tips on prepping your pieces, see our guidance in the main drill hole FAQ.