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Large Diamond Files

Eternal Tools

Our large diamond needle files are unique, they have been carefully designed and produced with precision in mind. The diamond grit is of very high quality and bonded to the file carefully and precisely to produce a superb diamond file.

Choose from the following two grits: 600 being the finest, 220 being the coarsest

Shapes available in 220 grit:

  • Half Round (220 grit)

Shapes available in 600 grit:

  • Round (600 grit)
  • Triangle (600 grit)
  • Square (600 grit)

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Grit Size

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Our large diamond needle files will remove material quickly whilst leaving a smooth finish. As with all our diamond files they are ideal for the removal of material and smoothing out pitted and rough areas.

How to use our Large Diamond Files

These diamond files can be used either wet or dry, however they will last longer when used wet but this is not always practical if you are working on a delicate jewellery piece, clock or watch part. Apply light pressure and let the file glide across the work and you will achieve some amazing results!

The many uses for our diamond files:

  • Use the tip for detailed areas such as ring shanks
  • Removing excess solder
  • Shaping precious stones for jewellery
  • Sharpening carbide cutting tools
  • Enlarging holes
  • Fitting clock and watch glasses
  • Refacing clock & pallets
  • Re-pivoting clock and watches
  • Beveling cut crystal glasses
  • Sharpening household objects
  • Cross graining burnishing tools
  • Sharpening fishing hooks


Diamond grit is precisely electroplated onto a steel blank with a plastic handle

  • Overall length: 180mm
  • Shaft: 5mm
  • Diamond length: 70mm
  • Handle diameter: 6mm

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Other questions and our answers

I am looking for a product for hand-sharpening a paper cutter blade about two feet long. What would you suggest?

Yes, the 600 grit large diamond files will be ideal for this. 

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