breaking blades

[yyyyyguy]

For some reason I'm breaking blades right at the bottom hold down, am I tightening them too much? They're FD so I'm sure it isn't the blades, I'm using #3 cutting 1/4" plywood 

[dgman]

Hey Pete, what kind of saw are you using? How much tension are you using? It's possible you are using to much or not enough tension. On my DeWalt I don't think I can apply to much tension to break #3 blades, so you may not have enough tension. Give me more information.

[Barry]

Pete -

I tend to break blades when I push the wood through too fast.  This may not be your problem but sometimes I have to remind my self to let the blade do the work and not try to rush.  It can be a real problem when you are stack cutting, your blade bends as you exert too much pressure and the lower pieces end up smaller than the top piece.

I also have a Dewalt and if I over tighten the blade it comes out looking like a hockey stick.  It doesn't usually cause the blade to break however.

Barry

[yyyyyguy]

I have a Dremel,(I'm thinking of painting it yellow) I too have had the "hockey stick" effect usually with spirals, dbman, I'll do a little experimenting with the tension, luckily when they break I'm only losing about 1/2", so I've been able to "skillfully" reuse them.  Thanks Pete

[Marcellarius]

I have the same with some #1 spiral blades.
because of the twistblade in the straight clamp I think there's to much tension.
they break on the spot where the screw is tightened.

[GrayBeard]

So they are breaking right at the clamp?
Could there be a 'burr' on the holding screw?

Just a thought from a "Yellow" user....

~~~GB~~~

[yyyyyguy]

I'll check that GB

[JJammo1]

I've done that myself.  It was from over tension for sure.  Had a bad habit of over tensioning for awhile and over tightening the holder. It surprisingly doesnt take much to hold it in on "Ole Yeller".

[Marcellarius]

So they are breaking right at the clamp?
Could there be a 'burr' on the holding screw?

Just a thought from a "Yellow" user....

~~~GB~~~

they brake wile turning the screw tied. can't even start sawing.
they don't fit in really well in the hegner clamp.

[yyyyyguy]

Marcellarius I was doing that a lot then started to lift the blade just about a 1/4" from bottom out, that seemed to help the twisting off thing

[spiderman]

Try some wd-40 on the screws that hold the blades but don't get any wd-40 on the end it well cause the blade to slip.  hope this helps.   I would get a dewalt scroll saw they are #1 one best...  because I say so....