Grobet USA Swiss Pattern 4" Three-Square Needle File – Cut 0 & 2
Designed for precise filing of angles, corners, grooves, and detailed components, these Grobet USA Swiss Pattern three-square needle files feature a triangular profile that provides excellent control when working in confined areas.
The three-square shape has three flat working surfaces that meet at sharp edges, making it particularly useful for filing internal angles, V-shaped grooves, and corners where a flat or round file would be less effective. The profile tapers toward the point, allowing access to smaller openings and intricate details.
Measuring 4" (100mm) overall, these compact needle files are well suited for jewelry making, watch and clock repair, model making, precision metalworking, and other detailed bench applications.
Choose Cut 0 for coarser shaping and faster material removal or Cut 2 for more controlled filing and finer surface refinement.
Features & Benefits
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Three-Square Profile: Triangular cross-section provides three flat working surfaces for filing angles, corners, and grooves.
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Sharp Working Edges: Ideal for reaching internal corners and refining V-shaped openings.
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Tapered Design: Narrows toward the point for access to small openings and confined areas.
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Two Cut Options: Choose Cut 0 for coarser shaping or Cut 2 for finer, more controlled filing.
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Compact 4" Length: Provides excellent control when working on small components and detailed features.
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1-3/4" Cutting Length: Offers a concentrated working area for precision filing.
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Round Knurled Handle: Integral handle provides a secure grip without requiring a separate file handle.
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Swiss Pattern Precision: Designed for accurate filing where controlled material removal and surface quality are important.
Specifications
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Brand: Grobet USA
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File Type: Swiss Pattern Needle File
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Profile: Three-Square (Triangular)
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Overall Length: 4" (100mm)
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Cutting Length: 1-3/4" (44mm)
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Width: 7/64" (2.8mm)
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Cross-Section: Triangular
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Handle: Round knurled
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Available Cuts: 0 and 2
Cut Options
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Cut 0 – 31.630: Coarse cut for faster material removal, initial shaping, and refining angles or grooves.
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Cut 2 – 31.631: Medium cut for general-purpose precision filing, controlled refinement, and smoother finishing.
Ideal For
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Jewelry making and repair
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Filing internal angles and sharp corners
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Shaping V-shaped grooves
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Refining triangular openings
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Watch and clock repair
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Precision metalworking
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Small component fabrication
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Model making
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Toolmaking
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Detailed work under magnification
Frequently Asked Questions
What is a three-square needle file used for?
A three-square needle file has a triangular cross-section designed for filing internal angles, corners, V-shaped grooves, and other detailed areas where a flat or round file may not provide the required access.
What is the difference between Cut 0 and Cut 2?
Cut 0 provides a coarser cutting action for faster material removal and initial shaping. Cut 2 provides a finer cutting action for more controlled refinement and a smoother finish.
Are all three sides of the file usable?
Yes. The triangular profile provides three working faces, allowing the file to be used for shaping and refining angled surfaces.
Can this file be used for V-shaped grooves?
Yes. Its triangular profile makes it particularly useful for filing and refining V-shaped grooves and internal angles.
Does the file taper toward the point?
Yes. The profile tapers toward the point, helping it reach smaller openings, narrow grooves, and confined areas.
How long are these files?
Each file measures 4" (100mm) overall, with a 1-3/4" (44mm) cutting portion.
How wide are these files?
The maximum width is 7/64" (2.8mm).
Do these files require a separate handle?
No. They feature integral round knurled handles designed to provide a secure grip and precise control during detailed filing.
Which cut should I choose for finer finishing?
Cut 2 is the finer option offered on this page and is best suited for controlled refinement and smoother finishing.
Are both cuts included with one purchase?
No. Cut 0 and Cut 2 are individually selectable variants. Choose the cut that best matches the amount of material removal and finish required.
