For a portable circular saw, the splinters are on the top of the wood. ... you are going to be more worried about keeping the cut straight. ), do what Tom Walter of Alexandria, Va. did. Unlike a table saw, a handheld circular saw or jigsaw cuts in an upward direction. It would be difficult to keep the cut straight with a free hand saw like a circular saw. Crosscut blades have a higher tooth count—60 to 100—and a steep bevel angle to prevent tear out. Sharpen the blade so it doesn’t tear the wood. When you cut plywood with a circular saw then you don’t have to worry about the bottom side of the plywood sheet because tear out only happens on the upper side. Where the teeth come out of the wood, you can get splinters. You also can reduce top-face workpiece tear-out by adding a zero-clearance shoe, such as the one shown at right, to your jigsaw. 10-Point checklist To Prevent Circular Saw Kickback. For a table saw the splinters are on the bottom of the wood. So tear-out will typically be on top of the workpiece. A dull blade could also cause tearout. Tear out marks will ruin the look of your project, but can prevent them with a simple trick. In fact, one of the indicators of dulling cutters is when the amount of chipping and tearout starts to increase. Select one with a high tooth count (more than 40), and prepare to … If you hear a screech sound comes out of your saw, stop the saw immediately and check the blade if it is pinched. If you notice that the circular saw wanders from … This zero-clearance circular-saw base ensures the edges of your plywood cuts stay clean By Charles Miller Issue 202 If you want to avoid tearout on the edges of your plywood cuts (and for finish projects, who doesn’t? How to Prevent … Today’s “high ATB” (alternate top-bevel teeth) do an extremely good job of cutting clean edges, in my experience. How To Avoid Circular Saw Or Jigsaw Tear-out. Some woodworkers add a zero clearance plate to the bottom of their saws. Woodgrain varies from 1 board to the next, permitting you to provide your plywood pieces an exceptional character. In this case, you could consider making the full cut, but leaving about 3 inches uncut at the end. Circular blade tear out is no different. The easiest way for a clean cut with a circular saw is to score the cut line first. Check your blade for signs of dullness, damage, or fraying. Whether we are using a circular blade in a table or hand saw, the cutting edges on router bits or the reciprocating blades of jigsaws they simply cannot cut cleanly when dull. Ease the corners and edges with sandpaper to prevent making any scratches on your workpieces. Whether you are cutting your plywood with a table saw or a circular saw, this is not a job for a “contractor” quality blade. Little and slow-paced cuts are the very best approach to decrease plywood without tear-out. That is also the easiest way for a clean cut if the other side isn’t visible after assembly. Make it from 1 ⁄ 4" hardboard and secure it to the saw's foot with machine screws or double-faced tape. Similar to the other components, it can be made from plywood or foam. If you see these issues on your blade, then send it out for a professional sharpening. The faster the cut, the larger the teeth, the more perpendicular to the surface and the duller the teeth, the more splinters you will get.For a hand saw, the splinters are on the bottom of the wood. Anyone who’s used a router on end grain or to cut dados across wood fibers will tell you how the bit causes tear out as it exits the wood (without proper technique or precautions, of course!) The telltale sign that a saw … The cut straight for signs of dullness, damage, or fraying the wood saw the splinters are on top... A table saw, a handheld circular saw or jigsaw cuts in an upward direction be more about! 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