Milwaukee 4-1/2" Small Angle Grinder

A recent addition to my tool collection is the Milwaukee 4-1/2" Small Angle Grinder, model 6140-30. As someone who frequently tackles metal and masonry projects, I was eager to see how this grinder would stand up to various tasks. With its robust design and thoughtful features, it promised to be a reliable companion for many heavy-duty applications.

First impressions matter, and the Milwaukee grinder certainly makes a good one. The build quality is immediately apparent, with a solid feel that inspires confidence. The grinder is equipped with a 7.5-amp motor, which is more than sufficient for most DIY and professional tasks. The motor runs at a no-load speed of 10,000 RPM, ensuring that it can handle cutting, grinding, and polishing with ease.

One of the standout features of this grinder is the extra-large paddle switch, which includes a lock-on function. This switch is designed for comfort and ease of use, making it less fatiguing to operate over extended periods. The paddle switch conforms to the shape of the tool's barrel, allowing for a natural grip that minimizes finger strain. I found this particularly useful when working on longer projects, as it allowed me to maintain a steady grip without discomfort.

The grinder's advanced airflow system is another highlight. It includes built-in debris baffles that help protect the internal components from dust and debris. This feature not only extends the life of the tool but also ensures consistent performance. Additionally, the motor is coated with epoxy to further enhance its durability. These protective measures give me confidence that this grinder will withstand the rigors of frequent use.

One of the practical aspects of this grinder is its tool-free burst-resistant guard. This guard can be easily adjusted to different positions without the need for additional tools, making it simple to adapt to various tasks. The guard locks securely in place, providing an extra layer of safety during operation. I appreciated this feature when switching between cutting and grinding tasks, as it allowed for quick and hassle-free adjustments.

The Milwaukee grinder also includes an adjustable side handle, which can be mounted on either side of the tool. This versatility makes it suitable for both left- and right-handed users. The handle provides additional control and stability, especially when performing more precise tasks. The tool's overall ergonomics are well thought out, making it comfortable to use for extended periods.

In terms of performance, the grinder did not disappoint. I put it to the test by cutting through 1/2" steel rebar and grinding down some concrete surfaces. The motor maintained a consistent speed throughout, with no noticeable drop in RPM even under heavy load. The tool's weight, at just over 6.5 lbs, is well-balanced, making it easy to maneuver without causing excessive fatigue.

One minor drawback I noticed is that the grinder can get quite hot during prolonged use. The vents for the airflow system are located in areas that can be covered by your hand, which may contribute to the heat buildup. While this didn't affect the tool's performance, it's something to be mindful of during extended tasks. Wearing gloves can help mitigate this issue.

Another point worth mentioning is that the grinder does not include any grinding wheels or cutting discs. These must be purchased separately, which is a slight inconvenience but not a deal-breaker. The tool comes with a spanner wrench for changing wheels, and the spindle lock button makes this process straightforward. However, a built-in storage pocket for the wrench would have been a nice addition.

The safety features on this grinder are commendable. The paddle switch includes a lock-off button that prevents accidental activation, which is crucial for a tool with this much power. The guard and handle adjustments are intuitive and secure, providing peace of mind during operation. As always, it's important to wear appropriate safety gear, such as eye protection and gloves, when using this tool.

Overall, I am highly impressed with the Milwaukee 4-1/2" Small Angle Grinder. Its combination of power, durability, and user-friendly features makes it a valuable addition to any tool collection. Whether you're a professional contractor or a DIY enthusiast, this grinder is up to the task. The 5-year warranty offered by Milwaukee further underscores the company's confidence in their product.

In conclusion, I would definitely recommend the Milwaukee 4-1/2" Small Angle Grinder. It delivers on its promises of performance and durability, making it a reliable choice for a wide range of applications. The thoughtful design and safety features make it easy to use, even for extended periods. While there are a few minor drawbacks, they are far outweighed by the tool's overall quality and functionality. If you're in the market for a robust and versatile angle grinder, the Milwaukee 6140-30 is an excellent option.