The electronics that replace a riving knife in this specialized saw are designed / tuned to work with a certain amount of load applied in a range. Just spinning the blade in free air has the circuit hunting because it's approaching a given range of detection.
First of all, is the comment about hunting coming from Mafell tech support or is it your opinion?
One thing is clear. Some of these saws modulate through the entire speed range (and it's common) and others (particularly 240v) don't. One of this behavior is normal and the other is not. You can't have both. So, which one is it?
If that guy did the same useless 'test' again without a blade installed I'm willing to bet he would have found that modulation disappeared because there's not enough info for the circuit to sense anything / engage.
I checked. Modulation is the same blade on or off.
Bottom line, my controller might be faulty, given lack of torque on low speed. That's the reason I asked the question in the first place. Excessive lag in motor response and low torque might be related (i.e. the blade stalls before the motor is able to kick in). Upon some research I found out that aforementioned motor behavior is quite common, but not universal. I have 2014 unit bought gently used.
Where’s it coming from? It’s coming from the saw, if you had an undamaged one you could try it without a blade and hear for yourself. But if your controller is faulty there wasn't much sense in 'checking' the difference was there?
And why would you bother fixing the saw? You’ve posted on and on for quite some time now on different forums how disappointed you are in the MT for numerous reasons. In fact you seem to whine more than your saw. This new issue only adds to your growing long list.
But it’s not new is it? I remember you asked (and were answered) about this same exact thing on this forum, with same video reference, same answers, almost a year ago.
The other strange thing is that you say you bought this lightly
abused used saw back in 2014, so you have owned it for what - 6 years? You’re telling us you just now realized your saw couldn’t cut 3mm plastic? If my saw suddenly couldn’t cut a thin sheet of plastic or a 2x4, when it could before, I wouldn’t be asking about modulation sounds I would definitely know something is wrong and send it in for repair asap. Or maybe you meant to say that your used MT has always been this way?
Btw - at the top you posted that your saw is a 120v, but you’ve previously posted that it’s a 110v UK version? Could you tell us which is it?
Maybe you could give it a rest and see if it fixes itself.
