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General Category => General Scroll Saw Talk => Topic started by: yyyyyguy on December 06, 2010, 06:27:18 pm
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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 ???
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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.
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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
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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
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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.
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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~~~
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I'll check that GB
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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".
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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.
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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
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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....