Panther blade

[Worm Drive]

I was just looking at the 12 tooth panther blade for my 55 Req and noticed something strange. The spacing between the teeth varies around the blade. I grabbed my dial calipers, just to make sure my eyes weren't playing tricks on me. The biggest space is 1 13/16" from face of tooth to face of tooth. The smallest around 1 7/16" and varied in between.I'm assuming that was designed this way, not a factory blooper. I've never seen a blade like this before.

 

[Davej]

It's fine , the blade that comes with the saw also has uneven spacing.

 

[TomGadwa1]

As on tires the uneven spacing is employed to reduce the effects of resonant frequencies developing which can produce undesired performance issues. I sure as you already implied this is quite deliberate!

 

[Worm Drive]

I didn't figure that it was a problem, both blades work fine. Just saying, that in 20 plus years of woodworking, I've never noticed another circular blade with this design and found it interesting. Is it a Festool innovation or are other companies using this design?

 

[Deansocial]

Festool don't make there own blades

 

[Timtool]

From what i know Leitz makes the Festool blades, saw a video around here once of the factory and they were making a blade with the distinct festool green/yellow colors on the side.

As on tires the uneven spacing is employed to reduce the effects of resonant frequencies developing which can produce undesired performance issues. I sure as you already implied this is quite deliberate!

I had noticed this uneven spacing but never could make out why, the resonating thing makes perfect sense! It probably reduces noise and vibration as well.