There are a great many other grinds and some of them are highly specialized. Our Newsletter. Skip to main content. Job Opportunities and Services Exchange. Negatife angle varies according to the hardness of the material being cut, 12 degrees for hard and 15 degrees for softer materials. Clamping Metalworking clamps Woodworking clamps.

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The hook angle is theangle between the tooth and the line, which might be on the order of Negative Rake Radial Arm Saw Blade Video 10 degreesor more. If the line and the tooth do not have a gap but line up togetherperfectly, then we say that the tooth has zero degrees of hook. Finally, if thebase of the tooth protrudes beyond the radius line slightly, then we say thatthe saw has a negative hook. A saw with a positive hook will betrying to pull itself into the wood or pull the wood into the saw. We woulduse a positive hook blade on a table saw for example or a rip saw.

If we used anegative hook, the saw is pushing the wood away from the saw. On a table or ripsaw, this negative hook design means that the wood will come flying back at theoperator. Now consider the radial arm saw. Ifthe saw has a positive hook, it will pull itself into the wood as you cut,which means the operator has to use a lot of effort to keep the saw fromfeeding too fast.

But, if we had zero hook, then the saw could be pulled intothe piece being cut by the operator 8 Inch Radial Arm Saw Blade Test and when halfway through, the operatorcould take his hands off the saw Do not dothis—this is justa visual example and the saw wouldjust sit there.

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