Ryobi Smooth Sphere Material Removal Burr

In the world of woodworking and DIY projects, having the right tool can make all the difference. Recently, I had the opportunity to use the Ryobi Smooth Sphere Material Removal Burr, model A90MR04, and I must say, it has quickly become a staple in my toolkit. This little burr is designed for shaping concave surfaces and hollowing out materials, and it works on a variety of materials including wood, plastic, fiberglass, and drywall.

The first thing I noticed about this tool is its size. The sphere head is 3/8” in diameter, mounted on a 1 ½” shaft, which fits perfectly into my rotary tool with a 1/8” collet. While it might seem small at first glance, don’t let its size fool you. This burr is incredibly effective and capable of removing a surprising amount of material quickly and efficiently.

My initial test was on a pine board. I was curious to see how well it would perform on a softer wood. Within seconds, I had carved out a finger-sized pocket. The material removal rate was impressive, and the finish left behind was remarkably smooth considering how quickly it worked. This smooth finish is particularly useful for projects that require a finer touch after the initial material removal.

Next, I decided to put the burr to the test on a more challenging material: walnut shell. Walnut is known for its hardness, and I was skeptical about how well the burr would handle it. To my surprise, it performed admirably. I was able to smooth out the interior and even bore two small holes, creating a piece that resembled a monkey head for a small statue. The burr showed no signs of wear after these tests, which speaks volumes about its durability.

One of the standout features of this burr is its versatility. Whether you’re working on wood, plastic, fiberglass, or drywall, this tool can handle it all. I’ve used it for various woodworking projects, including hand texturing small wood pieces and decorating wood turnings. The control it offers is exceptional, allowing for precise and detailed work. It’s easy to maneuver and doesn’t cause any noticeable draw on the motor or binding during use, which is a significant advantage when working on intricate projects.

However, it’s important to note that the size of this tool might not be suitable for everyone. If you’re expecting a larger burr, you might be disappointed. The pictures can be misleading, and it’s crucial to check the specifications before making a purchase. Despite its small size, the tool’s performance is impressive, but it might not meet the needs of those looking for a larger burr for more extensive projects.

Additionally, while the smooth finish is quite good, it might not be as polished as some might expect. For projects that require an ultra-smooth finish, additional sanding or finishing might be necessary. This isn’t a deal-breaker for me, but it’s something to keep in mind depending on your project requirements.

The build quality of the Ryobi Smooth Sphere Material Removal Burr is also worth mentioning. It’s made in the U.S.A, and the craftsmanship is evident. The burr feels solid and well-made, which gives me confidence in its longevity. I’ve used it extensively, and it still looks and performs like new. This durability is a significant plus, especially for those who frequently work on various DIY projects.

One aspect I particularly appreciate is the ability to use the burr with an accessory pencil tip unit, which allows for even greater precision. Using it like a dental tool, I can achieve detailed and intricate designs that would be challenging with larger, less precise tools. This feature expands the creativity and versatility of my rotary tool, making it a valuable addition to my toolkit.

In conclusion, the Ryobi Smooth Sphere Material Removal Burr is a fantastic tool for anyone involved in woodworking, DIY projects, or any work that requires shaping and hollowing out materials. Its small size and sharpness make it incredibly effective, and its versatility across different materials is a significant advantage. While it might not be suitable for those looking for a larger tool or an ultra-polished finish, its performance, durability, and ease of use make it a worthwhile investment for most users.

I highly recommend the Ryobi Smooth Sphere Material Removal Burr for its excellent performance, versatility, and durability. It’s a tool that can significantly enhance your rotary tool’s capabilities and open up new possibilities for your projects. Whether you’re a seasoned woodworker or a DIY enthusiast, this burr is a valuable addition to your toolkit.