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Large Diamond Files

Eternal Tools

Our 600 grit large diamond needle files are unique. They have been carefully designed and produced with precision in mind. The diamond grit is very high quality and bonded to the file carefully and precisely to produce a superb diamond file with no snags or bumps to ensure you have the cleanest and smoothest file.

Choose from the following shapes:

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

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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
"I absolutely love them. My favorite of all is the square shaped. The thing I love about this is the 90 degree corners. If you solder a post onto the back of an earring, for example, the square section will help you get right into that solid joint and clean up both the horizontal and vertical surfaces. It also has a very nice sharp point. I think they are essential for any jeweler's bench. The uniformity of the grit is superb" - Dave Wilson
"Thank you for the help with my cabochon problems Lucy! The large 600 grit diamond file has worked a treat to level off the bottom of my cabochon so it's all ready to set" - Lucylou Designs
"If you buy nothing else, I would definitely recommend the 220 half round one. It's brilliant. Also the triangle shape 600 grit gives you a flat surface but also gives you the sharp corners so these are great for inside tight angles such as inside of corners or boxes, small pierced items and cleaning of tight little solder joints. The 60 degree angles really helps to get close in to those tight areas" - Dave Wilson.


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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