How to cut plywood properly

How to get perfect plywood cuts

Step 1. Choose the right blade.

If you are planning to run a clean cut PlywoodSo it is likely that you will need a new blade. That’s because the stock blade that comes with the table saw and Circular saw They usually range from 14 to 24 teeth count, designed for general purpose, fast rough cuts. According to Jacob Rhodes, owner and chief engineer, “A lot of chipped plywood cuts come from people using the blade that’s already on the saw, and half the time it’s the wrong blade for the job.” TruetrackAn Ohio-based woodworking tool company that makes tracks for circular saws.

To get a smooth cut, you’ll need a 40- to 60-tooth finer Circular saw bladeOr a 60- to 80-tooth blade if you’re using a 10-in. Saw the table. Make sure you choose a carbide-tipped blade, which stays sharp longer and doesn’t heat up like other blade materials.

Step 2. Set up support.

Safety First: Plywood It comes in 4-foot-by-8-foot sheets and can weigh between 40 pounds and 70 pounds depending on its thickness, making it difficult and even dangerous for one person to carry. When moving plywood, especially if it’s the heavy 3/4-inch-thick variety, get an extra set of hands to help you.

You can set the plywood on the floor or on a saw horse set while making the cut with the circular saw. Either way, you need to support it so it doesn’t sag:

• Cutting with a sawhorse: Set the saws about 6 feet apart, then place two 2x4s parallel about 2 feet apart around the lumber. Place the plywood sheet over the saw.
• Cutting on the floor: Place a piece of foam board on the floor, then place a sheet of plywood on top of the foam board. The foam board supports every inch of plywood while allowing the blade to cut through it easily. One piece of foam board should get you through several plywood cuts.

Keep in mind that whatever material you choose to support the plywood sheet will be cut by the blade.

Step 3: Position the wood correctly.

The good side of plywood is that it is smooth and free from any knots or patches. A saw blade is more likely to tear plywood when entering the wood than exiting the wood, since the blade enters from the bottom and exits from the top.You want to keep the good side down when cutting plywood with a circular saw.

The blade on a table saw enters the wood from above, so keep the plywood face up when cutting with the table saw.

Step 4: Set the blade depth.

Set the blade depth to your own saw So that the teeth go about 1/4 inch below the bottom of the wood with a circular saw or 1/4 inch above for a table saw. This allows the gullets to remove sawdust and wood chips as they are cut, creating a smoother, more efficient cut. Here’s a caveat if you’re using a table saw (see below).

Step 5: Make the Cuts.

• Saw circular: Line up the blade so it’s on the waste side of the cutting line and start making your cut. Push the saw at a slow, steady pace so that the blade cuts through the wood without snagging, but doesn’t spend so much time in one spot that it burns the wood. Stability is key, Rhodes says. “Another important thing is to prevent the saw from wandering,” he says. “If the saw stays on a fixed path, you usually get a much cleaner edge.”
• Table saw: If you’re cutting with a table saw, it’s important to keep the wood against the fence as you cut to get an accurate, smooth cut. Position yourself so that both hands are outside the blade. Push straight forward with the hand closest to the blade, while pushing toward the fence with the hand further from the blade. This will force the wood through the blade while pressing it firmly against the fence. As with a circular saw, push the wood at a speed that does not drop the blade or burn the wood. As you near the end of the cut, position your hands so that they are on either side of the blade.

Cross Cuts Vs. Rip Cuts

There are two types of cuts that can be made through plywood (or really any type of wood): rip cuts and cross cuts. A Rip cut is a cut that is made parallel to the grain, while a Cross cut A cut is made perpendicular to the grain. Cross cuts usually cause more splintering with plywood while rip cuts are easier. You want to use a higher tooth count blade for the cross cut and then for the rip cut.

Plywood Cutting Tips

Use a fence.

If you want to make a A straight, accurate cut with a circular saw, You need to use a fence. Rhodes advises using a fence unless you are making a rough cut. “The worst cuts aren’t because the saw lacks power,” he says. “That’s because the wood wraps before the blade touches the wood, the sheet moves, or the setup stops.” You can purchase an aftermarket cutting guide or make your own quick guide:

• Step 1: Measure and mark your cut line on the plywood.
• Step 2: Measure the distance between the saw blade and the edge of the shoe. If you are placing the plywood piece on the left side of the saw, then measure from the left side of the blade to the edge of the shoe. If you are placing the plywood on the right side of the blade, then measure from the right side of the blade to the edge of the shoe.
• Step 3: Add that measurement to your cutline and create a new mark.
• Step 4: Line up your straight edge with that new mark and lock it in place using clamps.
• Step 5: Push the shoe of the circular saw up against the guide as you make your cut to run a perfectly straight line.

Tap it down.

Adding low-adhesion blue masking tape to both faces at the cut line keeps the wood fibers in place while cutting the plywood. Be sure to secure it firmly and peel it gently to reduce splintering.

Tag-team hundred types.

Table saws make more precise cuts than circular saws. But running an entire sheet of plywood through a circular saw can be difficult and almost impossible if you do the job yourself. If you have both types of saws, use a circular saw to cut the plywood into more manageable pieces and then make precise cuts with your table saw.

Raise the blade.

Typically, to prevent kickback with a table saw, you set the blade only on the valleys between the teeth to exit the wood. By raising the blade you can change the direction in which the teeth actually penetrate the wood, shifting from an angled cut to a nearly perpendicular cut. Of course, you need to account for the variation and be more careful when making your cuts—use a feather board and slow your feed rate.

Note: This increases the risk of making cuts and is best practiced on a table saw by an experienced DIYer. Do not raise the blade more than 1 inch from the gullets and support the wood on both sides of the blade.

Use zero-clearance inserts.

Depends on what Type of saw As you’re using, you can reduce tearing by providing support over the cut.

• Circular Saw: Use a scrap piece of hardboard to make a zero clearance shoe for your circular saw. Cut the hardboard to the same dimensions as the circular saw shoe. Retract the circular saw blade, then attach the cut piece of hardboard to the shoe using double-sided tape. Turn on the saw and cut the plunge through the hardboard to create a zero-clearance slot.
• Table saw: Table saws have a removable neck plate that fits around the blade. There is usually a gap between the stock plate and the blade. Trade that plate for a zero-clearance throat plate that fits almost flush to the blade, which gives the piece more support and is therefore less likely to tear. you can Make one yourself Using scrap plywood or MDF.

Plywood score.

Scoring is an especially good idea if both sides of the plywood will be visible in your project. Before making your cut, score the cut line several times using a straight edge and utility knife to cut through the first layer of veneer. By cutting that first layer, you will prevent the blade from tearing the wood as it pulls through it.

If you are cutting with a table saw, you do not need to score the line with the knife. Instead, lower the blade to about 1/8-inch height and make a scoring cut. Then raise the blade to its normal height and make another pass to complete the cut.

FAQ

Q. What is the best tool for cutting plywood?

Rhodes says the best tool for cutting plywood is a circular saw. “It’s usually the easiest way to break plywood without wresting the whole sheet over the table,” he says. “Table saws are great, but not everyone has the space, and not everyone wants to wrestle a 4’x8′ sheet by themselves.”

Q. Can you cut plywood by hand?

Yes. You can cut the plywood by hand using a handsaw, but that’s not ideal. “I wouldn’t pick it unless it’s a small cut or you have power tools handy,” says Rhodes. “It will work, but it’s slower, harder to keep straight, and harder to get clean edges in large panels.” When cutting plywood by hand, use a fine-toothed Japanese pull saw and hold the saw at a shallow angle for best results.

Q. Will Home Depot cut plywood for you?

Home Depot will cut the plywood for you using its in-house panel saw, usually for free. However, the purpose of this saw is to make quick rough cuts that make the plywood easier to take home rather than precise cuts.

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