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Small Diamond Slitting Discs

  • 0.17mm x 22mm (approx. 1200 grit)
  • 0.5mm x 22mm (approx. 600 grit)

Our double-sided diamond slitting discs have many uses; with diamond both on the periphery and on both faces, they can be used for slitting and grinding. These dental discs are of the highest quality and will give a precise and clean cut to hard materials such as carbide, glass, stone and ceramic. Screw Mandrel is not included.

Diamond cutting discs are useful for so many jobs:

  • Slitting carbide
  • Producing screw slots
  • Slicing gemstones
  • Coldwork cutting glass jobs: rods, slots, notches, slices
  • Cutting shell and bone slithers
  • Geology specimen extraction

Read on to find out more...

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Use the outside edge of the diamond discs for slitting screw slots in watches and clocks or for cutting through small pieces of tungsten carbide and other hard materials like our carbide rod and carbide gravers.

The 2 main faces can be used as a abrasive for sharpening or polishing the edges of hard materials especially when a precise and delicate tool is required.

We offer two thicknesses of diamond discs; one for really thin and fine work and the other for more general all purpose work.

“Today I’ve been putting a new tooth in a carriage clock wheel, I found the 0.17mm diamond slitting disc great for shaping the new tooth” - Julius Pidduck

How to use our Diamond Slitting Discs

Our diamond-cutting discs need to be run relatively slowly, and adding water as a coolant will extend their life. However, we understand that using water is not always practical with horology or specific jewellery work so they can be used dry. Ensure you use light fingertip pressure and never force the disc onto the work.

To be held on a screw mandrel

Looking to Carve and Engrave?

When it comes to carving, shaping, and engraving hard materials, look no further than Eternal Tools' Diamond Disc Burrs. With a range of sizes and shank options, these burrs are perfect for bezel cutting and inlay work, making them an ideal choice for anyone looking to carve rather than slit or cut.

"The 0.17mm slitting disc is outstanding! Far superior to any of the other stuff I have wasted money on in the past. Excellent company, I’ll definitely be back” - Eugene Stevenson

Disclaimer. Using rotary tools near water has never been, to the best of our knowledge, endorsed by any of the rotary tool manufacturers. If you do choose to drill near water or with attachments under water connected to your drill then you do so at your own risk. Please be aware that mixing electricity and water can be very dangerous.


Precision Diamond Electroplated Cutting Discs

  • Diameter: 22mm
  • Width: 0.5mm or 0.17mm
  • Depth of diamond: 7mm
  • Hole: 1.6mm

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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