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Medium Diamond Files

Eternal Tools

Our 600 grit diamond needle files are unique, they have been designed and produced with precision in mind. Diamond needle files are used for roughing out and removing heavy pitting or finishing and shaping of hard materials. 

Diamond Needle File shapes available:

  • Crossing (600 grit)
  • Half Round (600 grit)
  • Oval (600 grit)

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How to use our Medium Diamond Needle Files

Our diamond needle files can be used either wet or dry, they will last longer when used wet but it is understood that this isn't always practical when working on a delicate watch or clock part. As with all our products allow the tool to do the work and don't apply too much pressure especially if working on a corner or sharp edge.

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
"Many thanks for your speedy and efficient service. The half round diamond file was ideal and we now have two glasses which had minor chips on their rims back in service" - Harry Bradshaw


Diamond 600 grit is precisely electroplated onto a steel blank with a plastic handle

  • Overall length: 140mm
  • Shaft: 3mm
  • Diamond length: 70mm
  • Handle diameter: 4mm

Questions & Answers

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Other questions and our answers

I’d like to cut and smooth some tungsten carbide , will these discs do the job?


The diamond slitting discs would be perfect for the cutting of your carbide.  To smooth, try our 600 grit diamond files. To polish the tungsten carbide you can use our diamond grinding paste. 

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