A Guide to Choosing the Right Needle File
Whether you’re refining a setting, smoothing prongs, or shaping fine details, choosing the right needle file can save you time and elevate the quality of your work. With so many shapes and cuts available, we’re here to help you find the right tool for the job.
From fine finishing to heavy shaping, here’s how to select the perfect file for your bench.
Understanding File Cuts
File cuts refer to the coarseness of the teeth. Lower numbers (e.g. cut 0) remove more material, while higher numbers (e.g. cut 4 or 6) give a finer finish. Here’s a quick reference:
Cut 00 – Coarse (41 teeth per inch)
Cut 2 – Medium (79 teeth per inch)
Cut 4 – Fine (117 teeth per inch)
Cut 6 – Extra Fine (173 teeth per inch)
Tip: Use coarser files for shaping, finer cuts for finishing. For delicate work, opt for a cut 4 or 6.
File Shapes & Their Uses
The shape of your file determines what it’s best suited for. Here's a breakdown of popular profiles:
Barrette – One-sided teeth, perfect for refining tight angles without damaging adjacent surfaces.
Half-Round – Ideal for inside and outside curves; a true all-rounder.
Flat/Square Files – Great for flat surfaces and corners. The hand file has a safe edge for precision.
Three-Square (Triangular) – Excellent for filing prong seats and creating sharp internal angles.
Round – For enlarging holes or filing curves with control.
Knife – Best for acute angles and very narrow slots.
💡 Pro Tip: Don’t use the same file for every task – each shape is designed for a specific job.
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Technique & Care Tips
Files cut on the forward stroke only – lift on the return to prolong life.
Clean with brass brush regularly.
Use a handle to improve control and protect your hand.
Never use jewellery files on steel or iron – it risks contamination.
