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Grobet - Pegas Scroll Saw blads
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Old 04-18-2014, 08:15 PM   #1
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Default A Dumb Newbie Question

Sometimes, with no warning, my saw blade will catch a bind in the wood, lift it up and promptly slam it back down. I wouldn't be surprised if it only happened while executing a tight turn. But it sometimes happens on a straight cut. What am I doing wrong to cause this?
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Old 04-18-2014, 08:58 PM   #2
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Not holding the wood down firmly.

And is the blade in right, with the teeth pointing down.

And if you're using the wood hold down device that might have come with the saw, get rid of it. Throw it away.

And welcome to the forum....lots of good ideas here....

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Old 04-18-2014, 09:36 PM   #3
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I agree with Carter.
Have good tension, good speed and push very slow into the blade, let the blade do the cutting.
Most blades have a burr on the right side, what makes the blade cut to the right. To stay on the line, move the wood some degree to the right.
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Old 04-18-2014, 11:33 PM   #4
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Those are good suggestions, all of them. I have had the work piece jump up if I push to hard & in particular if it is hard wood. If you cut 3/4 in. oak, for example, you have to go slow & be sure your blade is sharp & not dull from a long cutting time. It all takes time & practice. Be sure you use quality blades too. Like Mike's Flying Dutchman blades. Good Luck.
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Old 04-19-2014, 11:25 AM   #5
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It happens to all of us!!!!!! I have been cutting since 2002 and I just had a piece of wood do that last week (1st time is a couple of years). All of the above suggestion are great and they help with the issue. I find the wood catching when the blade is dull. When it catches just keep your fingers out from under the wood (that stings) and turn the saw off. Put the wood back on the table & hold firmly down before restarting the saw.
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Old 04-21-2014, 11:38 PM   #6
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I suspect it can happen for different reasons with different woods, thicknesses, blade speed, blade size, etc. But I do not think it is a coincidence that it usually happens to me when I am fatigued.
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Old 04-28-2014, 10:07 PM   #7
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Default I figured it out

At first, I thought I was doing something wrong in the cutting process, which is why I made that initial post. But I started paying extra special attention to everything I was doing. And I'm pretty sure I was doing everything right. But the problem of the blade binding in the wood continued -- sometimes. And that was the key to me figuring this out. It didn't happen all the time. I would go for long stretches with no problems and I would find myself dreading the changing of a blade that I knew was getting dull because I didn't want the problem to start again. Then it dawned on me. The problem wasn't my cutting technique. The problem was the blade. At first I suspected a bad batch of blades, but when I changed to a different manufacturer, the problem continued. Then I looked at the way the blade was installed. There is where I found the problem. Using my square, I had always diligently checked to make sure the blade was perfectly vertical. But I only looked from the front of the saw (i.e. checking for left or right deviations from vertical). But I neglected to look from the side to check for front to back deviations from vertical. I run a Hegner saw, and the blade holding mechanism there is a bit unique. So maybe this isn't a problem for other saws. But at least on my Hegner, I found that if I'm not careful, it is possible to get the blade slightly off kilter in the bottom blade clamp. This causes the blade to be ever-so-slightly out of true vertical position (front-to-back vertical is the problem, not left to right). Anyway, now every time I change a blade, I check for true vertical position from BOTH the front view and the side view. When this is achieved, my Hegner purrs like a kitten and I am a happy camper.
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