DO IT BEST 335989 Arbored Hole Saw Mk Morse 009326304311 1-7/8

( Brand: Do It Best ), ( Manufacturer Part Number: 335989 ), ( Part Type: Saw ), ( Blade Material: Bi-metal ), ( Blade Diameter: 8 In ), ( Country Of Origin: United States ), ( UPC: 009326304311 )

Review DO IT BEST 1-7/8 Inch Bi metal Self arbored Hole Saw Mk Morse

The **MK Morse 335989 1-7/8" Bi-Metal Self-Arboring Hole Saw** is a precision-engineered power tool accessory designed to deliver clean, accurate cuts through a variety of materials with minimal effort. Crafted from high-quality **bi-metal alloy**, this hole saw combines the durability of hardened steel with the flexibility of a spring-tempered blade, ensuring extended tool life and consistent performance even when tackling tougher materials like wood, drywall, plastic, or thin metal. The **self-arboring design** eliminates the need for pre-drilling a pilot hole, as the saw s built-in arbor sleeve securely locks onto the drill chuck, providing a stable and centered cutting action that reduces wandering and improves hole accuracy. With a **1-7/8-inch diameter**, this hole saw is ideal for applications requiring medium-sized openings, such as installing pipes, vents, electrical conduits, or mounting fixtures in construction, plumbing, or DIY projects. The sharp, serrated teeth are engineered to cut efficiently while minimizing splintering and tear-out, making it a versatile choice for both professionals and hobbyists. Its robust construction and ergonomic design ensure smooth operation with standard drill presses or hand drills, while the durable arbor sleeve resists wear and maintains a tight grip for reliable performance over countless cuts. Whether used in residential remodeling, commercial installations, or workshop fabrication, this hole saw delivers the precision and efficiency needed to complete tasks with confidence and precision.

The **MK Morse 335989 1-7/8" Bi-Metal Self-Arbor Hole Saw** is a popular choice for cutting large holes in wood, metal, plastic, and composite materials. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High-Quality Bi-Metal Construction**

- The saw features a bi-metal blade, combining high-speed steel (HSS) with a softer steel backing. This design provides superior durability and heat resistance compared to standard carbon steel or HSS-only blades. The HSS edge maintains sharpness longer, reducing the need for frequent sharpening.

2. **Self-Arbor Design**

- The self-arbor design eliminates the need for an arbor ring, simplifying installation. The blade is pre-mounted on a threaded arbor shaft, making it easier to attach to a drill or hole saw attachment. This reduces setup time and minimizes the risk of misalignment.

3. **Versatility**

- Cutting holes for electrical outlets, vents, or plumbing in drywall, wood, or thin metal.

- Installing cabinetry, shelving, or trim work.

- Working with composite materials like MDF, plywood, or particleboard.

- It can also handle softer metals (e.g., aluminum, copper) and plastics, though heavier metals (e.g., steel) may require slower speeds and coolant.

4. **Smooth Cutting Performance**

- The bi-metal design reduces chipping and splintering, especially in wood and composite materials. The blade tends to produce cleaner edges, which is beneficial for finish work or when aesthetics matter.

5. **Durability**

- MK Morse is a well-regarded brand known for producing reliable power tools and accessories. This blade is built to last through multiple uses, especially when used within its intended material range.

6. **Compatibility**

- The threaded arbor (typically 1/2" or 5/8" shank, depending on the drill attachment) is standard, making it compatible with most drills and hole saw attachments. Users with existing setups can easily integrate this blade.

7. **Cost-Effective for Heavy Use**

- While not the cheapest option, the blade s longevity and performance make it cost-effective for frequent use. It often outlasts cheaper alternatives, reducing the need for frequent replacements.

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### **Cons**

1. **Limited Use on Hard Metals**

- While the bi-metal design improves performance on softer metals, it is **not ideal for cutting hard metals** (e.g., stainless steel, carbon steel, or cast iron). For these materials, a dedicated metal hole saw (often with a carbide-tipped edge) is required. Attempting to cut hard metals with this blade may result in rapid dulling, excessive heat, or blade failure.

2. **Requires Proper Drill Speed and Technique**

- Cutting too quickly or applying excessive pressure can cause the blade to overheat, warp, or break. The blade performs best at moderate speeds (typically 500 1,000 RPM, depending on the material). Using it at high speeds (e.g., for wood) without proper technique can lead to poor results.

3. **Dust and Debris Buildup**

- Like all hole saws, this blade can clog with debris, especially when cutting dense materials. Regular cleaning and occasional sharpening are necessary to maintain performance. Some users may need to use a vacuum or brush to clear the blade during operation.

4. **Weight and Fatigue**

- The 1-7/8" size is relatively large, making the blade heavier than smaller hole saws. Prolonged use can lead to hand or arm fatigue, particularly if cutting multiple holes. A drill with a variable speed trigger and a hole saw guide can help mitigate this.

5. **Cost**

- While not excessively expensive, this blade is more costly than basic carbon steel hole saws. For occasional use or very light-duty projects, a cheaper alternative might suffice. However, the investment is justified for frequent or professional use.

6. **Arbor Compatibility Issues**

- If the user s drill or hole saw attachment does not have the correct arbor size (e.g., 1/2" vs. 5/8"), the blade may not fit properly. Always verify compatibility before purchase.

7. **Potential for Warping**

- Like all hole saws, this blade can warp over time, especially if overheated or used improperly. While bi-metal blades are more resistant to warping than carbon steel, they are not immune. Users should store the blade properly (e.g., in a dry place, away from extreme temperatures) to prolong its life.

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### **Conclusion**

The **MK Morse 335989 1-7/8" Bi-Metal Self-Arbor Hole Saw** is a high-quality, versatile tool that excels in cutting wood, composite materials, and softer metals. Its bi-metal construction ensures durability and sharpness, while the self-arbor design simplifies installation. However, it is not suitable for hard metals and requires careful use to avoid overheating or damage. For users who frequently cut large holes in non-metallic or soft metallic materials, this blade offers an excellent balance of performance and longevity.

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### **Recommendation**

- You frequently cut large holes in wood, drywall, plastic, or soft metals (e.g., aluminum, copper).

- You prioritize durability and clean cuts over cost.

- You already have a compatible drill or hole saw attachment.

- You are willing to follow proper speed and technique guidelines to avoid overheating.

- You primarily work with hard metals (e.g., steel, cast iron) and need a dedicated metal hole saw.

- You are on a tight budget and only need occasional use.

- Your drill lacks variable speed control or a hole saw guide, which are essential for proper use.

- For **wood/drywall only**, a cheaper carbon steel or HSS hole saw may suffice.

- For **hard metals**, invest in a carbide-tipped hole saw.

- For **portability**, consider a smaller size (e.g., 1-1/8" or 1-1/4") if 1-7/8" is too cumbersome.

Overall, this is a **strong choice for DIYers, contractors, and hobbyists** who need a reliable, high-performance hole saw for non-metallic and soft metallic materials.

Details:

This high-quality hole saw is designed for precision cutting and made with durable bi-metal material. Manufactured in the USA, model number for this product is 335989.

part #: 335989 prices

• $12.00-$22.00

specifications sawbladeother:

• brand: Do It Best
• mpn: 335989
• part type: Saw
• blade material: Bi-metal
• blade diameter: 8 In
• country of origin: United States
• upc: 009326304311

seller sawbladeother:

• rating: 100.0%
• city: Dexter, Missouri
• # reviews: 261

payments sawbladeother:

• credit card: Discover
• wallet: Apple-pay
• other

returns sawbladeother:

• policy: No Returns

general sawbladeother:

• condition: New
• Power Tool Air Tool Accessories > Saw Blades > Other Saw Blades

offer sawbladeother:

• sold: 0
• quantity: 1
• started: May 18, 2026
• options: Ship-to-home
• availability: In Stock

shipping sawbladeother:

• type: Fixed
• transit: 4-9 Days
• service: USPS Ground Advantage
• carrier: USPS
• cost: $10.00
• class: Standard

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