Review: Ridgid R4120 Saw 12-Inch Compound Miter with Laser


Portable saws have some obvious advantages – they’re compact and light-weight, not to mention more affordable than average 12-inch units. Still, most projects require the reach and versatility of a 12-inch compound miter saw (CMS). The challenging part is finding a high-quality 12-in. model that won’t cost much more than a mid-level portable CMS. There are very few affordable 12-inch miter saws that are truly well-made, accurate and reliable. As a matter of fact, there’s just one with a price tag below $350 – the Ridgid’s R4120. The R4120 has become a favorite of industry professionals, farmers and long-time craftsmen for its reliability and precision.

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Versitile & Made to Last
Like all of Ridgid’s industrial-grade products, their 12-inch compound miter saw is known as a virtually indestructible tool among professionals. The bevel adjustments are reliable and user-friendly. Thanks to a high-performance 15-amp motor, the 12-inch Ridgid can be effective both as a heavy-duty chop saw and as a high-precision tool. As I and you can be confident that you’ll get the job done, regardless of the workload and operating conditions.

You can be sure this CMS is made to last not only because it’s a well-trusted brand, but also because Ridgit provides a life-time service warranty. In addition to that, there’s a “no-questions-asked” refund policy. If you aren’t satisfied, just bring the saw back within three months of the purchase date and Rigid will issue a full refund. Plus, in case of unpredicted breakage, which is almost unheard of, there is a 3-year limited warranty.

Full of Innovative Features
Among the most prominent and unique features of the latest top-of –the-line saws is the Zero Clearance Throat Plate. By eliminating extra clearance space, the R4120’s table support is maximized, resulting in improved accuracy. There is a heavy-duty extension for stock support, which further increases accuracy. To top it off, the saw includes an ExactAlign laser guide mechanism, with the diode conveniently located on the arbor. This is one of the few adjustable built-in lasers – it will stay precise, regardless of how many blade changes or other adjustments a job requires.


  • Accessories: Laser guide, product manual, stock clamp, dust bag, dust guide (for shop-vac), 12” carbide blade, blade wrench and hex keys.
  • Saw Dimentions: 28.1 x 18.5 x 22.6 inches
    • Arbor: 1 inch
    • Blade : 12 inches
    • Weight: 58.5 pounds
  • Cutting thickness capacity: 6inches
  • Cross-cut Capacity: 2-8 in.
  • Bevel Cut Range: 48 degrees, left
  • Miter Cut Range: 50 degrees, both left and right
  • Certification: 1UL Listed product

Reviews and Conclusion
Buyer reviews for the 12-inch Ridgit are overwhelmingly positive. Many have updates added after years of use, demonstrating the R4120’s quality and reliability. One review started a cascade of complains about the detachable stock support from buyers who ordered reconditioned units. These are saws that have been shipped around three times and I bet the previous owned didn’t package everything as well as he received it. Regardless of that, Ridgit was swift in refunding those users in full. We recommend the Ridgit R4120 to anyone in need of a 12-inch compound meter saw, whether you’re on a budget or not. It’s simply the best in its class.

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