You can easily sharpen the Festool Domino cutter with a credit card diamond sharpener. You sharpen the cutters edges freehand or by using a jig, In this blog, I explore both methods.
Freehand Sharpening of the Festool Domino
In this video, I demonstrate how I sharpen my domino carbide cutters. You too could save money by sharpening your own cutters. It is good to regularly sharpen the Festool cutter so they do not overheat. A sharp Festool cutter will speed up your workflow. The Festool Domino DF700 XL is featured in this video. You can also sharpen the Festool Domino DF500 but the cutters are smaller and can be tricky to sharpen. It is still possible to sharpen the cutters of the Festool domino DF 500.
Where do we sharpen?
The Domino cutter has an unconventional profile. You only need to sharpen the edge which makes contact with the sides of the mortise.
This image shows the cutting edges of the Festool domino cutter.
What we have to acknowledge is that the Festool Domino dowel cutter only cuts on the premier contact edges. What I mean by that is that the cutter only cuts on the tip of the tool. The flutes down the side of the cutter are used to clear debris from the mortise.
I repeat, So where do Sharpen?
Place the Domino cutter in a vice or find another way to secure it.
Take a Trend or DMT Diamond sharpener and make a few swipes with those angular edges. This is the ad-hoc method of Sharpening a Festool cutter.
These DMT credit card sharpeners work really well
Should I use a Jig to sharpen the Festool Domino Cutter?
Personally, I feel that the process of sharpening the Festool domino cutter would be a lot easier and more accurate with the use of a jig. At the time of writing this article, I know of no commercially available jigs for the purpose of sharpening a festival domino cutter.
This does not mean it is not possible but you will need to use your imagination. I am in the process of making a jig for this sharpening task. A simple method of holding the cutter rigid and a guide to assist the diamond sharpener to make accurate passes should suffice. You might find my last few years experiences with the Festool domino interesting
Homemade jig to Sharpen the Festool cutter Video
Why not just buy another Festool cutter?
At fifty euro each for a Festool Domino cutter, it makes sense to sharpen these tungsten carbide bits, and why wouldn’t you.
The sharpening of these cutters is actually very simple but first, you need to understand how they work.
Ok, then let’s delve straight into the cutter bit ethos. The Domino Dowel does not have a traditional cutter profile. Not every machined edge makes contact with the workpiece. This simplifies things somewhat.
In Conclusion, should I bother sharpening Domino Cutters?
I have been sharpening my cutters for just over four years and I don’t see any reason why you shouldn’t consider doing the same. When cutters cost around 50e it makes sense to sharpen them and also sometimes they need sharpening during a project when you have no spares!