Milwaukee 3-9/16" X 11-3/8" One Piece SDS-MAX Core Bit

Using the Milwaukee 3-9/16" X 11-3/8" One Piece SDS-MAX Core Bit was a bit of a mixed bag. While the core bit boasts some impressive features on paper, my hands-on experience with the tool revealed both strengths and significant areas for improvement. Here's a deeper look into my time with this core bit.

Firstly, the most noticeable feature of this core bit is its robust construction. The thick-wall core body immediately stands out, suggesting longevity and durability. Indeed, during my use, the core bit didn't show any signs of wear and tear that you'd expect from frequent use. This speaks volumes about Milwaukee's commitment to building durable tools. However, durability alone doesn't tell the whole story.

When I started drilling, the bit's asymmetrical and alternating teeth design became apparent. This design is supposed to pulverize material more effectively, and I found that it did an admirable job at making clean cuts through concrete and masonry. The cutting efficiency is one of the highlights of using this tool. It felt like less effort was required from my end to achieve precise cuts compared to other core bits I've used in the past.

Another positive aspect of the Milwaukee core bit is its dual compatibility with both SDS-Max and Spline shanks. This compatibility offers flexibility, allowing me to use it with different drills without needing to switch out the core bit. This adaptability can save time and effort, particularly on job sites where multiple tools are in use.

However, the core bit is not without its shortcomings. One of the most frustrating issues I encountered was with the pilot bit. The pilot bit fell out after just a few uses, rendering it ineffective. This consistent issue indicates a design flaw that Milwaukee needs to address. The pilot bit appears to be driven in without a set screw, which could have prevented it from falling out. Having to stop work to reattach or replace the pilot bit is an inconvenience that disrupts workflow and leads to unnecessary downtime.

Furthermore, the arbor, which is supposed to hold everything together, also posed problems. Despite attempts to secure it, including setting it with a hammer, the arbor repeatedly fell out. This issue was incredibly frustrating and diminished the overall usability of the tool. In one instance, I even tried welding the arbor to keep it in place, but this only weakened it further, causing it to snap. Such issues undermine the tool's reliability and can lead to significant delays and expenses on a project.

On a positive note, when the core bit functioned as it should, it delivered impressive results. The optional centering tip, for instance, was quite useful in improving drilling accuracy. It allowed me to start holes more precisely, which is crucial when working on projects that require exact measurements.

Another point worth mentioning is the length of the core bit. At 11-3/8 inches, the core bit is suitable for relatively shallow drilling. However, for deeper holes, you'll need to manually remove the inside core before continuing, which can be time-consuming. This limitation might not be suitable for all projects, especially those that require deeper drilling.

It's also important to note the bit's performance and price. While some users might find it on the expensive side, I believe that it does offer value for money—provided the issues with the pilot bit and arbor are resolved. The tool's performance, when not hindered by these problems, is quite satisfactory and can justify the cost for those who require a durable and efficient core bit for their work.

In conclusion, the Milwaukee 3-9/16" X 11-3/8" One Piece SDS-MAX Core Bit has the potential to be an excellent tool for professionals who need to drill large, shallow holes in concrete and masonry. Its durability, cutting efficiency, and dual compatibility are commendable. However, the recurring issues with the pilot bit and arbor significantly detract from its overall usability and reliability.

Would I recommend this tool? With some reservations, yes. If Milwaukee can address the issues with the pilot bit and arbor, this core bit could be a valuable addition to any professional's toolkit. As it stands, it's a tool with potential but also with notable flaws. For those who prioritize durability and cutting efficiency and are willing to work around the pilot bit and arbor issues, this core bit could still be worth considering. However, if reliability and hassle-free operation are your top priorities, you might want to look for alternative options until these design flaws are addressed.