You can prevent tearout on veneered boards by choosing a sharp, fine-finish blade with many teeth. A carbide ripping blade with as many teeth as you can afford gives the cleanest cut with the least tearout [1]. For track saws, use a fine-finish blade designed for plywood, veneered panels, or laminated sheet goods [2].
Tearout is the splintered veneer that chips out where the teeth exit the wood. On a veneered panel, that chipping shows on the good face you will see in the finished project. Blade choice matters most, but support at the cut line also counts.
This article covers how many teeth to pick, which blade type to buy, and how your saw setup changes the result. Start with the blade, because the other choices build on it.
How many teeth should the blade have?
More teeth give you a cleaner cut in veneer, so buy the blade with the most teeth you can afford. A higher count costs more, but it is the single biggest step you can take against tearout. [1]
Why more teeth help
Each tooth takes a smaller bite out of the wood. With more teeth passing through the cut, the veneer is sliced in small pieces instead of being pulled and lifted, so the fibers have less chance to splinter where the teeth exit. A blade with fewer, larger teeth takes bigger bites and is more likely to chip the face.
A starting count for a 7-1/2-inch saw
If you use a 7-1/2-inch circular saw, a blade with 60 or more teeth is a common starting point. [3] That count cuts the veneer often and in small bites, which gives you a cleaner edge on plywood and veneered panels.
Balancing teeth and cost
Spend more on the blade when the cut edge will show, such as a shelf or a tabletop edge. For a hidden cut, such as a rip that a face frame will cover, a less expensive blade with fewer teeth is usually enough.
What kind of blade should you buy?
Start with a carbide-tipped blade, since carbide stays sharp longer than steel. A carbide ripping blade is the kind that will do the best cut with the least tearout [1]. On a sheet of maple-veneered plywood, a sharp carbide blade leaves a clean edge where a steel blade may splinter the face. For a closer look, read Best Blade for Plywood Tearout on Clean Edges.
Next, look for a fine-finish blade made for plywood, veneered panels, or laminated sheet goods. Packaging that names one of those materials tells you the blade was designed for layered wood like yours [2]. If you use a track saw, the same fine-finish type is the one to pick [2]. It also helps to read Saw for Cutting Drywall and Plywood at Home: What to Use.
Keeping the blade very sharp is part of preventing tearout [3]. A dull blade tears the fibers even when it has plenty of teeth, so a high tooth count alone will not save a worn blade.
Watch for signs of wear. Brown burn marks on the cut edge or chipped teeth mean the blade is due for replacement. Swap it out before you start a project, not halfway through a sheet.
Does the saw setup change the result?
Yes, the saw setup changes the result, and on a table saw the biggest change is a zero-clearance insert. A zero-clearance insert fully supports the wood fibers at the cut line, which is exactly where veneer chips out. [4]
Picture a sheet of birch plywood with the good face up. If the wood is not supported at the blade, the veneer on the exit side can lift and splinter as the teeth leave it. An insert cut to fit the blade closes that gap, so the fibers have something solid under them while the blade passes. The insert matters most on the exit side, since that is where the blade pulls fibers upward.
If your saw will not take an insert, use tape instead. Mark the cut line, lay painter’s tape over it, and cut through the tape. Tape supports veneer fibers at the cut point and reduces tearout noticeably on veneer-faced panels. [5] Keep the tape flat and smooth, so the blade does not catch a wrinkle.
Tape is a helper, not a fix. Tape works best with a fine-tooth blade, not on its own. [5] Use it with the blade you already chose, and do not expect tape to rescue a coarse blade.
Insert first if you can, and tape as the fallback. Both do the same job: they hold the fibers still where the blade exits the wood.
What should you buy for veneered boards?
Veneered boards need a sharp blade and support at the cut line. Start with a sharp, carbide, fine-finish blade with many teeth. A carbide ripping blade with as many teeth as you can afford gives the least tearout [1].
On a table saw, a zero-clearance insert fully supports the fibers right at the cut line [4]. On a circular saw, use tape along the cut line. Tape supports veneer fibers at the cut point and reduces tearout noticeably on veneer-faced panels [5]. Cut with the veneer facing up so the good face takes the tearout.
Your next step: buy a sharp carbide fine-finish blade, then add tape or an insert before your next cut.