Milwaukee Large Angle Grinder

Milwaukee's Large Angle Grinder, model 2785-22HD, represents a significant leap in the cordless tool market, bringing the power and performance typically reserved for corded models into a more versatile, battery-operated format. As someone who spends a significant amount of time working with heavy-duty grinders, I found this tool to be both impressive and problematic in different aspects.

Design and Build Quality

Right out of the box, the Milwaukee Large Angle Grinder feels robust and well-built. The tool's durable metal housing and gearing speak to its industrial-grade construction. The grinder includes a 7"/9" guard, FIXTEC spindle nut, nylon washer, backing flange, spanner wrench, side handle, and a heavy fabric carrying bag. The carrying bag is particularly useful, with its large zippered opening and ample space for accessories.

The grinder’s ergonomics are commendable. It features a soft-grip handle that is comfortable to hold, even during extended use. The paddle switch with a lock-off lever adds a layer of safety, preventing accidental starts, which is crucial when handling a tool of this magnitude. The cast metal guard is easy to adjust, with five detents for various operating positions, enhancing the tool’s adaptability to different tasks.

Performance

Performance-wise, this grinder truly shines. It operates at up to 6600 RPM, powered by Milwaukee's M18 REDLITHIUM 12.0 Ah battery. The brushless motor generates power equivalent to a 15A corded grinder, making it a beast in cutting, grinding, and surface preparation tasks. I tested it on a range of materials, including metal and concrete, and it performed admirably. The tool-free accessory changes are a significant time-saver, allowing for quick transitions between tasks.

The grinder’s power is evident when using it with larger wheels, up to 9 inches in diameter. It handled heavy-duty tasks with ease, cutting through thick steel and grinding down concrete without breaking a sweat. The controlled start feature prevents the torque "jerk" reaction, providing a smooth startup and better control.

Battery Life and Management

However, the tool's battery consumption is a notable drawback. While the 12.0 Ah battery provides substantial power, it also drains rapidly under continuous heavy use. In my experience, the battery life ranged from 8 to 12 minutes during intense grinding or cutting sessions. This short runtime means frequent battery swaps, which can be a significant interruption if you're in the middle of a project.

The rapid charger included in the kit does help mitigate this issue to some extent, but it’s clear that for prolonged use, you’ll need multiple batteries on hand. I found that the batteries also tend to overheat during extended use, which triggers a thermal shutdown and requires a cooling period before they can be used again. This can be particularly frustrating when working on time-sensitive projects.

Durability and Reliability

Durability is a mixed bag with this tool. On one hand, the grinder feels like it’s built to last, with its sturdy construction and high-quality materials. On the other hand, there are concerns about the longevity of the trigger switch mechanism, which appears delicate and prone to failure under heavy use. This is something Milwaukee should address in future iterations to ensure the tool can withstand the rigors of industrial applications.

Versatility and Ease of Use

One of the standout features of this grinder is its versatility. The ability to use a range of wheel sizes, from 4-1/2" to 9", makes it suitable for various applications. The tool-free accessory changes, combined with the easy-to-adjust guard, make it user-friendly and adaptable to different tasks.

The grinder is also relatively lightweight for its category, weighing in at just under 12 pounds with the battery attached. This makes it easier to handle compared to some heavier corded models, reducing fatigue during extended use. However, the lack of an automatic brake means you need to be cautious, as the wheel takes time to come to a complete stop after releasing the trigger.

Noise and Vibration

In terms of noise and vibration, the grinder performs well. It’s not excessively noisy, and the vibration levels are manageable, thanks to the well-balanced design and soft-grip handles. This makes it more comfortable to use over long periods, which is a significant advantage for those who need to perform extensive grinding tasks.

Overall Impression

The Milwaukee Large Angle Grinder is an impressive tool that brings corded-level performance to a cordless platform. Its robust construction, powerful motor, and user-friendly features make it a valuable addition to any professional’s toolkit. However, the high battery consumption and potential reliability issues with the trigger switch are significant drawbacks that need to be considered.

Recommendation

Would I recommend the Milwaukee Large Angle Grinder? Yes, but with reservations. If you require a powerful, versatile grinder for heavy-duty tasks and have access to multiple batteries and a rapid charger, this tool can be a game-changer. It’s particularly useful for situations where access to a power outlet is limited, such as remote job sites or outdoor projects.

However, if you need a grinder for continuous, intensive use and don’t have the infrastructure to support frequent battery swaps and cooling periods, you might find the corded alternative more practical. The tool’s performance is excellent, but the battery management issues could be a deal-breaker for some users.

In summary, the Milwaukee Large Angle Grinder is a formidable tool with some room for improvement. Its strengths in power, versatility, and build quality make it a worthy contender in the cordless grinder market, provided you can manage its demanding battery needs.