- Joined
- Nov 3, 2007
- Messages
- 5,133
wrightwoodwork said:It will ultimately come down to the person who sharpens them
It shouldn't be a person-centric process. It should be a data-centric process. Modern machines don't require machinists with deft hand-eye coordination beyond being able to use a keyboard or touchscreen.
In my opinion, if you are taking your expensive cutting tools to someone with a file in hand, you should consider a modern sharpening service.
paulhtremblay said:Update: I just got my blade back with a label stating:
"All Non-Forrest Festool Kapex Sawblades that have uneven tooth spacing are being RETURNED NO WORK DONE due to Erratic uneven tooth spacing which causes Mis-Grind on OD."
The Forest company makes Festool blades themselves, though I don't know what if the kerf is exactly 2.2 mm so that they will work with my current guide rails.
I do note that the teeth are erratic on this blade. Looking counter clockwise, I see a thick tooth, followed by a thin tooth, followed to *two* thin teeth, followed by a thick tooth. There seems to be no pattern to the teeth.
I may well be wrong, Paul, but I don't think Forrest makes Festool blades. I'm pretty sure they are still made by Leitz Tooling. We have a local sharpener, Cook Sharpening, that makes formerly dull Festool blades, "like new", and uses the same mechanisms as Leitz, for a reason.
I can't, for any reason, think of why varied tooth patterns would be confounding to any blade sharpener. It is a standard thing with many high quality saw blades. I don't know of any modern saw blades where the tooth pattern is random but I know of many where it is staggered. I'm pretty sure the staggering used on saw blades makes them run smoother with less vibration and resonance. The back-and-forth (radial) laser cuts are also to reduce resonance and make the blades run true, if I'm not mistaken.
I'm pretty certain that the info' needed to properly sharpen a Festool/Leitz blade is laser etched on each blade.
I'm not a sharpening expert but I've been around a few and the above is what I have gathered.
Tom