What did I do wrong?
You had a blade pinched because it dropped on either side
Oh, I see, and then there's tension on there.
When the motor's, when you hear that sort of thing, you're like
"Ugh" immediately because it's like damaging itself
as it's doing that. That's fine, it should be fine.
Now there might be a little rubber smell from the belt.
So, what happened here is as Paul was making this cut,
the blade cut deeper and deeper until there was just a tiny
little corner of wood left, and that little bit,
was just a bit too flexible and with the wood being
heavy on either side, and only supported by
a small table saw sled, it came down on either side
and pinched down on that blade and stalled it.
This sort of blade pinch is more often experienced
with a hand held circular saw. Ifyou're cut ing a piece of wood
and it's not supported near the saw.
But, it's easy enough to avoid by making sure
that the piece of wood is supported near the saw,
and the piece that's cut off will drop down
but maybe not too far, when it's cut.
>> Paul: What causes burn-out? What am I doing wrong?
Am I going too fast or too slow? >> Matthias: Too slow, yeah.
No problem, I did the same thing.
Yeah, yeah, I mean, this little thing is where
When ripping a rectangular panel, like this,
a lot of people, knowing that the blade is dangerous,
try to push the wood as far away from the blade as possible
and that actually makes it worse So imagine we're actually making
a cut instead of grazing just the top of a stationary blade,
if I push here, the blade is pushing here,
and that gives this piece of wood rotation,
and it wants turn like this.
Now, as we're finishing the cut, and I'm still pushing
against here and not enough against here,
as I get to the end of it,
the rotation of the blade wants to lift this piece of wood up,
and it'll jam in there real good,
lift it up and this happens in a fraction of a second.
Now it's on top of the blade and now the teeth
are just pulling this piece of wood along
and keep in mind this is going very fast and this piece of wood
now comes flying, and gives you one hell of a bruise
in the belly, if you're lucky.
No burn, yet. In terms of burning on the cuts,
sideways pressure on the blade would make it worse,
a dull blade makes it worse, harder woods make it worse,
but also cutting too slowly.
Now, if I want to cut through this piece of wood,
and my saw has only got 1 3/4 horse power,
I won't be able to cut this fast enough to avoid it.
Okay, that was a devil fail. I was sure this would burn
with me cutting this slowly, but if I need to cut
to this depth, in hardwood with my saw,
I tend to do this in two passages like this.
So, even though I had to make two cuts
and raise the blade in between, my total cutting time was
actually less. This is the kind of just made
and this is the previous cut and actually looking at it now
you can see some stains here and here.