Chop Saws and Compound Miter Saws
Helpful Tutorial Buyers Guide
... by Andrew Wormer ~ in association with
Amazon.com
❈ The Motorized Revolution
It wasn't that long ago that making accurate crosscuts in wood required a skilled hand, a sharp handsaw, and a chunk of time. But in the early 1970s, a new saw began to appear on job sites that promised to speed up these cuts: the motorized miter saw, or chop saw.
A chop saw is essentially a lightweight circular saw mounted on a spring-loaded pivoting arm supported by a metal base. While these relatively small, inexpensive saws don't have the cutting capacity of a radial arm saw, they are very portable and rugged enough to stand up to daily use (and abuse) on the job and survive the pickup truck ride to the next job.
❈ Chop Saw Cutting Capacity
A chop saw with a 10" blade and a hefty 12 to 15 amp motor can make quick, accurate 90° cuts in 2 x 4 and 2 x 6 boards. If you rotate the blade left or right, they can also make miter cuts, and some of them can be pivoted past 45° in one or both directions. But 10" chop saws have one major limitation: cutting capacity. Most of them are limited to about a 5½" cut at 90°, and even less when cutting miters.
For this reason, manufacturers also offer chop saws with 12", 14", and even 15" diameter blades, which enables them to make cuts that are wider (up to about 7½") and higher (up to about 3½"). For some users, this capacity still isn't enough, which is why the pricier--but more versatile--sliding compound miter saws have become so popular. In fact, regular chop saws are disappearing from the marketplace.
❈ Compound Miter Saws and Fences
Chop saws that can make bevel cuts as well as miter cuts (and most of them can nowadays) are technically called compound miter saws . If you tilt the blade while cutting at an angle, these saws can cut crown molding while the stock lies flat on the table. But tilting the blade means that the fence has to get out of the blade's way when the saw head heels over. To achieve this, some manufacturers significantly reduce the height of their fences near the blade, then advise users to add a supplemental wood fence when making regular cuts that need extra-height support. But a better approach is to use a sliding fence, which provides full-height support and moves out of the way for bevel cuts.
❈ Miter Matters
Preset detent positions on the saw's turntable (typically set at 0, 15, 22.5, 30, and 45°) help to position the blade quickly and accurately for common miter cuts. Some manufacturers also offer detents for the common crown molding angles on the miter and bevel scales. But the detents on some saws can be tricky to override if you want to make minute adjustments to the fit of a cut--say, a 32.25° miter instead of the 31.62° that crown molding typically requires. The miter and bevel scales offered by different manufacturers aren't equally easy to read, either. This is particularly true of bevel scales, which are often partially hidden behind the body of the saw.
❈ Featured Tool:
▸ Powerful 15 amp, 3,800 rpm Motor
▸ 12'' Miter Saw Blade comes with 10 Positive Stops
▸ Tall Sliding Fences Support 6¾'' Base Vertically
▸ Bevels 0° - 48° Left and Right
▸ 2'' x 14'' Dimensional Lumber Cross Cut Capacity at 90°
▸ 2'' x 10'' Dimensional Lumber at 45°
▸ Cam-lock Miter Handle with Detent Override
▸ Innovative Clamping Mechanism and Linear Ball Bearings
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