Track saws offer accurate cuts

You may not have noticed yet, but there’s an up-and-coming tool category that I expect will improve DIY options across the board. Generically called track-guided saws, these light, simple power tools are changing the way sheet goods are cut. Whether you’re building furniture, completing home renovations, making a garden shed or sheeting a roof, you need to consider these tools.

The tool is really a simple concept: a metal track guides a handheld circular saw across stationary sheet goods. Currently, there are three brand names in the game–DeWalt, Festool and Makita–but other brands are likely to show up soon.

Instead of wrestling massive sheets of plywood and melamine across a tablesaw to make cuts, track-guided saws use a metal track to regulate the travel of a specially designed, plunge-style, circular saw. The wood stays still and the saw moves. It sounds like a recipe for crude results, but it isn’t. In fact, accuracy is phenomenal. The saws create very precise cuts that are also extraordinarily smooth on both the underside face of the sheet and the top. The clean cut is an accomplishment that even most high-end, single-blade cabinet saws struggle to match, although track-guided saws do it easily, thanks to a very simple detail.

Along the edges of all three brands of guide tracks, you’ll find a rigid rubber lip. This lip extends out beyond the saw blade when the track is new, and is trimmed flush with the blade on the first cut. This arrangement positions the edge of the rubber at precisely the right place to support the top edge of the cut, just where the saw blade breaks through the wood and where splintering normally happens. The rubber is stiff enough that it prevents damage to even the most fragile hardwood-veneered plywood and melamine. Results from the track-guided saws I’ve used are every bit as smooth as the best cuts produced with a fine blade on my stationary cabinet saw. The rubber lip design also offers another advantage too.

Since the lip aligns perfectly with the edge of the saw blade, the lip acts as a precise visual guide for aligning the cut. There’s no need to add or subtract some obscure allowance for the width of the saw’s baseplate (as you would when using a 2x4 as a saw guide), so setting up a track-guided rig is fast and accurate. Wherever the rubber lands is exactly where your cut occurs. The bottom face of each of the tracks I’ve been using also has high-friction surfaces that prevent it from sliding around.

Saw design is beyond ordinary, too. Besides offering precise depth-of-cut stops, track-guided saws are meant to plunge into the wood at the beginning of each cut, and retract from it under spring pressure afterward. This behaviour allows cuts to stop and start within the boundaries of a sheet, while also boosting speed and safety. Not only is the blade safely shrouded when it’s not cutting, but you can put the saw to one side while the blade is still spinning after a cut is complete. Also, by adjusting the depth of cut so that it barely goes through your workpiece, it will leave almost no cut marks in the sacrificial support surface you have underneath. You can cut dozens of times on the same plywood backer without marking it up much at all.

Probably the biggest deterrent to buying a track-guided saw is price. This tool costs roughly the same as a pro-grade portable tablesaw–about $600 to $700–and that’s steep enough to scare some people off.

You may be thinking, Who wants to pay that kind of money for a circular saw and a big ruler?

Power-tool companies probably are pulling in bigger than usual profit margins on track-guided saws right now (at least, until additional competition drives prices down), but after using a couple of models, I have to say that the value is there. Simple as these tools look, don’t be fooled. Engineering is precise enough to produce very smooth cuts, accurate mitres and great bevels. Track-guided saws are also quiet, safe and portable. Doesn’t this sound like the makings of a major power-tool category?

Working with sheet goods

Veneered plywood, particleboard and MDF are used to make the finest furniture and architectural millwork in the world. It doesn’t always end up like this, but it can. The outcome depends on appropriate use.

While these materials do make furniture projects easier to build and more economical, they’re much more than second-rate substitutes for “real” wood. Got some cabinets planned? Considering wainscotting for your home? How about some built-in shelves? Veneered sheet goods can help you achieve the best possible results, as long as you get accurate, splinter-free cuts. Veneered plywood makes great panels in applications in which seasonal wood movement would normally lead to trouble. MDF takes paint wonderfully. Baltic birch plywood makes terrific jigs, fixtures and utility furniture, even without edging. Use sheet goods appropriately where they make technical sense, and you’ll do better work.


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