DeWalt Medium Angle Grinder

The DeWalt DW840 Medium Angle Grinder is a powerhouse that delivers impressive grinding capabilities for various applications. As someone who frequently engages in DIY projects and light to medium construction work, I found this tool to be a significant upgrade from my previous, smaller grinders. Here’s a comprehensive look at my experience with it.

Power and Performance

The DW840 boasts a 13 Amp motor that delivers 8,500 RPM, and this is where the tool truly shines. The power is more than adequate for most grinding tasks, whether it’s cutting through steel, grinding down concrete, or removing rust from metal surfaces. I put it to the test on a concrete grinding project that my older, 5 Amp grinder couldn’t handle. The DW840 remained cool to the touch even after extended use, a testament to its robust motor and efficient cooling system.

Ergonomics and Usability

One of the standout features of this grinder is its ergonomic design. The handle is comfortable, and the weight distribution makes it easy to maneuver, even in tight spaces. I was initially concerned that the longer design might make it cumbersome, but it turned out to be quite nimble. The trigger is intuitive and easy to operate, reducing the strain on my wrist during prolonged use.

The grinder comes with three different size disk guards, which is a thoughtful addition. This flexibility allows for multiple types of grinding and cutting tasks without having to purchase additional accessories. However, I did notice that it does not come with a Type 1 guard, which is required for certain cutting operations. This was a minor inconvenience as I had to order it separately from DeWalt.

Build Quality and Durability

The build quality of the DW840 is generally impressive. It feels sturdy in hand, and the materials used seem to be of high quality. However, I did encounter a significant issue with the arbor housing, which is made of a thin aluminum ring. This part seems insufficient to handle the torque of a 7-inch wheel, causing the gears to strip after a few uses. This is an area where DeWalt could improve by using a more robust material.

Another minor issue was the plug prongs, which seemed to be made of low-grade metal and bent easily. While this didn’t affect the tool’s performance, it was concerning from a durability standpoint.

Safety Features

Safety is a critical aspect of any power tool, and the DW840 includes several features to ensure user protection. The adjustable guard allows you to redirect sparks away from you, which is especially useful when working in confined spaces. The spindle-lock button makes wheel changes straightforward and quick, reducing the need to fumble with multiple tools. However, the safety trigger lock can be a bit tricky to engage depending on your hand position, which can be a minor annoyance during operation.

Practical Applications

In practical use, the DW840 excels in a variety of tasks. I used it to cut through steel channels, grind down concrete high spots, and even remove old paint from metal surfaces. It performed admirably in all these tasks, making it a versatile addition to my tool collection. The power-to-weight ratio is excellent, allowing for extended use without significant fatigue.

Noise and Vibration

One aspect that surprised me was the relatively low noise level for such a powerful tool. While it’s not silent by any means, it’s quieter than other grinders I’ve used in the past. The vibration is also manageable, thanks to the ergonomic handle design. This makes it more comfortable to use for extended periods, which is a significant plus for larger projects.

Value for Money

The DW840 is priced competitively, especially considering its performance and build quality. It comes with a set of grinding discs, a spanner tool, and a carrying bag, which adds to its overall value. While it’s not the cheapest option on the market, the additional cost is justified by its robust performance and versatility.

Room for Improvement

While the DW840 is a solid tool, there are a few areas where it could be improved. As mentioned earlier, the arbor housing needs to be more robust to handle the torque of a 7-inch wheel. Including a Type 1 guard in the package would also be a welcome addition. Lastly, the plug prongs should be made of higher-grade metal to ensure long-term durability.

Conclusion

Overall, the DeWalt DW840 Medium Angle Grinder is a reliable and powerful tool that can handle a wide range of grinding tasks. Its ergonomic design, robust motor, and versatile features make it a valuable addition to any DIYer or contractor’s toolkit. While it has a few areas that could be improved, these are minor issues that don’t significantly detract from its overall performance.

I would recommend the DW840 for anyone in need of a medium to heavy-duty angle grinder. Its power, ease of use, and build quality make it a worthwhile investment for both occasional and frequent users. Just be prepared to make a few minor adjustments or purchases to fully optimize its capabilities.