Milwaukee 4-3/4" Hole Dozer™ Bi-Metal Hole Saw

The Milwaukee 4-3/4" Hole Dozer™ Bi-Metal Hole Saw is a tool that has earned its stripes in my workshop. As someone who frequently tackles diverse materials, from metals to wood, having a reliable and versatile hole saw is essential. This Hole Dozer™ promises durability and efficiency, and I was eager to put it to the test.

First impressions matter, and the Hole Dozer™ did not disappoint. The 3.5 TPI (teeth per inch) tooth design immediately stood out. It’s designed to enhance durability, especially in metal applications, which is often where lesser hole saws falter. The teeth are sharp and well-set, which is crucial for maintaining performance over time.

One of the standout features of this hole saw is the access slots. These slots are not just a minor design tweak; they significantly simplify the often frustrating task of removing the wood core. Whether you’re working with wood, drywall, or metal, the ability to easily eject the core saves time and reduces hassle. The access slots, combined with the holes on the base, provide multiple points to push the plug out, which is a thoughtful design feature that I greatly appreciated.

Using the Hole Dozer™ on a lower cabinet to create a pass-through for a dust collector line was my first test. The saw cut through the wood effortlessly, and to my surprise, the paint on the teeth remained intact. This is a testament to the tool's durability and the effectiveness of its thermoset coating, which reduces friction and improves cutting speed. The cut was clean, and the saw's performance was consistent throughout the task.

However, the Hole Dozer™ is not without its challenges. Given its size, it requires a robust setup to handle the kinetic energy generated during operation. I strongly recommend using a heavy-duty arbor with a 1/2" chuck and two pins to prevent the saw from turning and to relieve pressure on the threaded hub. This setup ensures that the saw stays securely attached and is easier to remove after use. Attempting to use this hole saw with a standard arbor or a drill without a side handle can be risky and may lead to injury.

For larger holes, like the 4-3/4" diameter this tool is designed for, a drill press, angle head drill, or a right-angle drill such as a hole hog is ideal. Using a straight drill with a side handle might work, but the lack of stability could pose a safety hazard. The sheer size of this hole saw means it generates substantial torque, which can be difficult to manage with smaller or less powerful drills.

In terms of performance across different materials, the Hole Dozer™ excels. I tested it on various substrates, including mild steel, aluminum, and cast iron, and it performed admirably. The recommended RPM settings provided by Milwaukee are spot-on, ensuring optimal performance and longevity of the tool. For instance, cutting through mild steel at 70 RPM was smooth and efficient, while aluminum at 95 RPM was a breeze. The tool's ability to handle stainless steel, wood with nails, and even cement board speaks to its versatility and robust construction.

One of the key aspects of any hole saw is edge retention, and the Hole Dozer™ does not disappoint. The carbide tips are incredibly sharp and maintain their edge well, even after multiple uses. This is crucial for maintaining cutting efficiency and ensuring clean, precise cuts. The lifetime tooth break warranty offered by Milwaukee is a testament to their confidence in the tool's durability and reliability.

Despite its many strengths, there are a few considerations to keep in mind. The Hole Dozer™ can be a bit aggressive, especially when dealing with softer materials like wood. The sharp teeth can grab the material, which requires a firm grip and steady control to avoid any mishaps. Reducing the drill speed can help manage this, but it may result in a slightly messier cut. Finding the right balance between speed and control is key to getting the best results.

Overall, the Milwaukee 4-3/4" Hole Dozer™ Bi-Metal Hole Saw is a powerful and reliable tool that delivers on its promises. Its durable construction, sharp carbide tips, and thoughtful design features make it a valuable addition to any workshop. Whether you’re a professional contractor or a DIY enthusiast, this hole saw is well worth the investment.

I would highly recommend the Hole Dozer™ for anyone in need of a versatile and durable hole saw. Its ability to handle a wide range of materials, combined with its user-friendly design, makes it a standout choice. Just be sure to pair it with the appropriate arbor and drill setup to maximize its potential and ensure safe operation. With the Hole Dozer™, you’ll be well-equipped to tackle any project that comes your way.