Milwaukee Compact Electromagnetic Drill Press

The Milwaukee Compact Electromagnetic Drill Press, model 4270-20, is a tool that promises portability and power for metal drilling applications. As someone who has had the opportunity to use this drill extensively, I can attest to its strengths and, unfortunately, some of its shortcomings.

Design and Build Quality

The first thing that strikes you about this drill is its lightweight design. Weighing in at just 26.5 pounds, it’s incredibly easy to transport, making it suitable for remote drilling tasks. The inclusion of a carrying handle further enhances its portability. The overall build quality is robust, with a strong two-coil magnet providing 2,300 pounds of dead-lift force, ensuring that the drill stays firmly in place during operation.

The on-board storage for hex cutter wrenches is a thoughtful touch, making it convenient to switch out bits without having to rummage through a toolbox. Additionally, the feed handle can be relocated without the need for tools, adding to the drill’s versatility.

Performance

Powered by a 9.0-amp motor with 1.1 maximum horsepower, this drill is capable of cutting up to 1-½-inch diameter holes through 2-inch thick steel. It can also drill ½-inch diameter holes up to 4-¼ inches deep with twist drill bits. The motor provides ample power, and the electronic feedback system helps maintain consistent performance. However, there are some issues that undermine its overall effectiveness.

One of the major drawbacks I encountered was with the set screws holding the cutter in place. These screws have a tendency to strip out due to the thin wall of the sleeve, which only accommodates three threads. This issue can be quite frustrating, as it affects the stability of the cutter and, by extension, the precision of the drill. I had to weld a nut in place to hold the cutter, which unfortunately shortened the cutting depth.

Another problem is with the set screws at the top of the cutter adaptor and the drill chuck adaptor. These screws tend to come loose, regardless of how tightly they are secured. This can cause the adaptors to fall off in the middle of a cut, requiring frequent adjustments and causing significant downtime.

Speed and Control

The drill operates at a no-load speed of 450 RPM, which is generally adequate for most metal drilling tasks. However, there are situations where this speed can be either too slow or too fast. For instance, when drilling and tapping up to 3/8-inch holes, a higher speed would be more efficient. Conversely, for other applications, the drill spins too fast, making it less versatile than one would hope.

The two-button control panel on the back is straightforward and easy to use, but the lack of speed variability is a noticeable limitation. If Milwaukee could incorporate a variable speed control, it would significantly enhance the tool’s versatility and appeal.

Versatility and Applications

Despite its shortcomings, the drill excels in certain areas. Its compact size and powerful magnet make it ideal for tight spaces where larger drills simply won’t fit. This makes it particularly useful for specialized tasks in constrained environments. The drill accepts standard ¾-inch Weldon shank cutters and an optional 3-jaw chuck, offering some degree of flexibility in terms of bit compatibility.

Safety and Convenience

One of the standout features of this drill is its safety. The strong magnetic base ensures that the drill stays in place, reducing the risk of accidents. It is also far safer than using hand-held drills for similar tasks. The drill’s five-year warranty is another plus, providing peace of mind and underscoring Milwaukee’s confidence in its product.

Final Thoughts

In summary, the Milwaukee Compact Electromagnetic Drill Press has its share of strengths and weaknesses. Its lightweight design, strong magnet, and powerful motor make it a compelling option for specific applications, particularly in tight spaces. However, the issues with the set screws and the lack of speed variability are significant drawbacks that impact its overall performance and reliability.

Would I recommend this drill? It depends on your needs. If you require a portable, powerful drill for occasional use in tight spaces, this tool could be a good fit. However, for more demanding, frequent use, especially where precision and reliability are critical, you might want to consider other options. The issues with the set screws and speed limitations are too significant to overlook for heavy-duty applications.

Overall, the Milwaukee Compact Electromagnetic Drill Press is a tool with great potential, but it falls short in some key areas that could make or break its utility for professional users.