Freud Track Saw Blade vs. Freud 42-106 Bearing Flush Trim Router Bit: A Quality Inspector's Take
Why these two Freud workflows?
I'm the quality and compliance manager at a commercial cabinet shop. Before any tool order hits the floor, I review the spec against the job—roughly 1,200 tooling setups a year. In Q1 2024, we rejected a batch of 320 cabinet parts because the edge finish varied from panel to panel. The parts were within tolerance, but the customer could see it. That's what this comparison is about.
The confusion usually comes down to two ways of making a final edge:
- The track saw workflow: A track saw with a Freud track saw blade cuts the part to final size in one pass.
- The flush trim workflow: The part is cut slightly oversize, a template is clamped on, and a Freud 42-106 bearing flush trim router bit follows the template to make the final edge.
Both are legitimate. The right choice depends on three things: repeatability, speed, and edge quality on the material you're running. Let's compare them directly.
Dimension 1: Repeatability vs. absolute measurement
A track saw is an absolute measurement tool. You set the rail, lock it, and cut. If you need a part exactly 18-1/4 inches wide, the track saw is hard to beat. The measurement is in the setup, not in the operator.
A bearing flush trim bit is a relative measurement tool. The 42-106 follows a template, so the precision is in the template, not in the cut. Once that template is checked, the router bit repeats it exactly on every part. That is why the flush trim path wins on repeatability. With one template, I get 50 identical drawer fronts. With a track saw, I set the rail 50 times, and each setup carries a small risk of error.
I'd argue this surprise is where most shops make the wrong call. They buy a track saw for production runs because it feels faster, then struggle with panel-to-panel variation. The track saw is excellent for one-off dimensions. The flush trim bit is better for matching repeated edges.
Dimension 2: Setup time vs. cycle time
The first part is usually faster with a track saw. Actually, the setup is faster. No template means you can be cutting in under two minutes. For a custom job with a few parts, that's the workflow I'd pick.
The math changes when the batch grows. On a recent run of 80 plywood sides, we used a template and the 42-106 bearing flush trim router bit. Template setup took about 45 minutes. After that, each side took under two minutes from rough cut to finished edge. With the track saw, measuring and cutting each side ran closer to four minutes. The break-even was around 23 parts. On that run, the router workflow saved us roughly two hours.
So the honest answer depends on batch size. Track saw for one-offs and custom dimensions. The flush trim bit for production runs where the same edge repeats. If your mix is both, keep both.
Dimension 3: Edge quality by material
Everything I'd read said a router bit always leaves a cleaner edge than a saw blade. In practice, a fresh Freud track saw blade on Baltic birch plywood leaves an edge I can glue without going to the router. The tooth geometry matters more than people want to admit.
But on white melamine and high-pressure laminate, the router is more reliable. A saw blade can chip the bottom edge no matter how many teeth it has. A flush trim bit takes a thin final pass, and the bearing keeps the cut line consistent. That's why the 42-106 lives on our router table for laminate jobs.
Here's the material split we use:
- Baltic birch, solid hardwood, standard plywood: a good Freud track saw blade is enough.
- Melamine, laminate, and veneered panels with a pattern: use the 42-106 bearing flush trim bit.
Tool set 232, trim screws, and the support cast
Tooling decisions don't stop at the blade and bit. When someone asks about buying the 42-106, I tell them to check what they already have in tool set 232 first. That set gives installers a range of router bits in one case, and for a mobile jobsite it's a practical starting point. But it's a breadth play. The 42-106 is a depth play. If you're running the same flush trim job on a regular basis, buy the dedicated bit. If your crew needs to handle whatever profile comes next, the set is more useful.
One fastener detail: the star drive trim-head trim screw is what I spec for face frames and light trim assembly. The trim head sinks without tearing the face veneer, and the star drive won't cam out when you're driving blind inside a cabinet. It's a small thing, but it shows up in final inspection.
What type of grinding wheel to sharpen mower blades?
A question that comes through our email every spring is what type of grinding wheel to sharpen mower blades. The short answer: a 46-grit aluminum oxide wheel on a bench grinder will handle standard steel mower blades. Keep the wheel dressed, use light passes, and don't let the edge turn blue.
The longer answer is directly relevant to tooling. The old one-wheel-sharpens-everything idea came from an era when most blades were high-speed steel. Carbide changed that. A Freud track saw blade has carbide tips. Running it on the same aluminum oxide wheel that you use for mower blades will pull the brazed tips loose and ruin the blade. For carbide woodworking blades, use a diamond wheel or send them out.
The honest recommendation
If you want the short version:
- Use a Freud track saw blade when you need absolute dimensions, quick setup, and one-off or custom work.
- Use the Freud 42-106 bearing flush trim router bit when you need many identical edges and can invest in a template.
- Keep tool set 232 if you're equipping a versatile shop or a mobile crew. Add the dedicated flush trim bit when the production volume justifies it.
- Use the star drive trim-head trim screw for face frames and visible trim.
- For mower blades, a 46-grit aluminum oxide wheel is fine. For carbide-tipped Freud blades, use a diamond wheel or a sharpening service.
No tool is a bad choice if it fits the run. The expensive mistake is choosing a workflow before understanding your part quantities, tolerance, and material. That's the quality issue I spend my days chasing.