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Thread: DOMINO Cutter Life
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23rd February 2007, 03:13 PM #16
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This information is admittedly hearsay as there is no way I was going to plunge 15000 mortises to test it
From my review:
The bits are sized so that they can be sharpened between 1 and 3 times before they are too short to create an acceptable width mortise. Festool says that the sharpening process can remove up to 1mm of material and still result in a usable bit. I measured all my bits and they averaged 48.75mm so that would make the minimum serviceable length after sharpening at 47.75mm If you decide not to sharpen fear not, Festool reports that the bits will last about 4,000 mortises when milling into the end grain of hardwood and 15,000 when milling into the side grain of soft wood. Those numbers are at the two extremes of the scale so we're likely to get something in between. In any event if the bits come close to that lifespan most of us will probably just buy a new one rather than sharpen them.
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23rd February 2007, 03:17 PM #17
Neander Normite
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I wonder if you could insert a 1mm split washer underneath it to re-life the cutter. Hmmm...
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23rd February 2007, 03:34 PM #18
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Dose it come down to, to short to affect the Domino size, or to short where the tip becomes to fragile on the cutter?
If its all about Domino size, then who cares. In a previous post i mentioned making my own tenon stock and it is very, very quick to do (great way of using off cut strips) and you can then adjust the size of the tenon depending on the cutter size after resharpening.
But if you get a min 4000 plunges and can sharpen up to 3 times thats a minimun of 16000 plunges per cutter. I wonder what percentage of users would reach that figure.
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23rd February 2007, 03:49 PM #19
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To be honest I cant imagine getting that bit sharpened in the US for much less than the purchase price. Have you looked at the number of angles on that tip? I suggested to Festool USA that they send bit samples out to sharpeners on the east, west and central parts of the US and ask them to quote performing the sharpening....which they did. It's too soon to hear the results but I'm betting that most places will want to jig up the cutter and that is going to make the sharpening expensive and not worth it.....just my opinion.
Originally Posted by Groggy
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23rd February 2007, 04:27 PM #20
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why not just shorten the joiners by a mm?
If you never made a mistake, you never made anything!
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23rd February 2007, 04:45 PM #21
Neander Normite
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Oi! This is MY dumb idea, no need for the likes of you to improve on it! Originally Posted by Shedhand
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23rd February 2007, 09:45 PM #22
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we must be twins - joined at the cerebellum. Great minds (and simple ones too) think alike.... Originally Posted by Groggy
Oi! This is MY dumb idea, no need for the likes of you to improve on it!
If you never made a mistake, you never made anything!
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23rd February 2007, 10:01 PM #23
Neander Normite
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Originally Posted by Shedhand
we must be twins - joined at the cerebellum. Great minds (and simple ones too) think alike....
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