NY40-DM35 SUNNEN Diamond Honing Stone Set

Review SUNNEN Aftermarket 100mm Diamond Honing Stone Set

The Sunnen NY40-DM35 100mm Diamond Honing Stone Set is a professional-grade tool designed for precision surface finishing and restoration. This set includes three honing stones, each with a different grit size, to cater to various stages of the honing process.

The first stone in the set, the coarse 120 grit diamond stone, is perfect for removing heavy scratches and rough spots from the surface. Its aggressive diamond particles efficiently cut through the metal, allowing you to quickly restore the base material.

The second stone, the medium 600 grit diamond stone, refines the surface and begins to eliminate finer scratches. Its finer diamond particles work more delicately, preparing the surface for the final finishing stage.

The third and final stone in the set, the fine 3000 grit diamond stone, is used for the final polishing stage. Its ultra-fine diamond particles create an incredibly smooth surface, leaving a mirror-like finish.

Each stone in the set measures 100mm (4 inches) in diameter and 19mm (3/4 inch) in thickness. They are designed to fit standard honing machines and come with a convenient storage box for easy organization and transportation.

Made of high-quality, durable materials, the Sunnens NY40-DM35 100mm Diamond Honing Stone Set is an essential tool for any automotive or industrial workshop. It allows for efficient and precise metal finishing, resulting in restored surfaces with a high degree of shine and smoothness.

The diamond particles are tightly bonded to the stone body, ensuring long-lasting performance and minimal wear. The stones are also resistant to water and oils, making them ideal for use in various applications, including engine blocks, cylinder heads, and other metal components.

With this versatile and effective honing stone set, you can restore the appearance and performance of your metal surfaces, ensuring they are ready for their next use.

The Sunnen NY40-DM35 100mm Diamond Honing Set is a popular choice for engine builders and mechanic shops for cylinder bore honing. Here are some pros and cons that might help you decide if this honing set is the right one for you:

1. High-performance diamonds: The set includes diamonds that offer superior cutting ability and durability, ensuring a precise and accurate bore finish.

2. Versatile: The set comes with various grit sizes, allowing users to hone from coarse to fine, making it suitable for various engine applications.

3. Cost-effective: Compared to other honing sets, this Sunnen diamond set is more affordable, making it an excellent choice for those on a budget.

4. Consistent results: The Sunnen honing process is known for producing consistent and accurate bore finishes, which is essential for optimal engine performance.

1. Requires experience: Diamond honing can be a complex process, and this set might not be suitable for beginners. Proper technique and equipment are necessary to achieve the desired results.

2. Limited to specific applications: Diamond honing is not recommended for aluminum blocks or engines with cast-iron blocks that have been machined to close tolerances.

3. Maintenance: Diamond hones require regular maintenance and sharpening to maintain their cutting performance, which can be time-consuming and costly.

In conclusion, the Sunnen NY40-DM35 100mm Diamond Honing Set offers high-performance, versatility, and cost-effectiveness, making it an excellent choice for engine builders and mechanic shops with experience in diamond honing. However, it might not be suitable for beginners due to the complex process and limited applications.

Recommendation: If you are an experienced engine builder or mechanic shop looking for a cost-effective and high-performance honing solution, the Sunnen NY40-DM35 100mm Diamond Honing Set is an excellent choice. However, if you are a beginner or have limited experience with diamond honing, we recommend considering other honing options that are more forgiving and easier to use.

Details:

Range: 4.0 - 5.6 or 102mm 142mm. Aftermarket Sunnen NY40-DM35 100mm diamond honing stone set, manufacturer. Part number: NY40-DM35. One of the mounted stones didn't get beveled ends at factory, check pics.

Diamond length : 100mm.

specifications lightument:

• brand: Sunnen
• mpn: Ny40-dm35
• country of origin: China

seller lightument:

• rating: 100.0%
• # reviews: 4287
• city: council grove, kansas

returns lightument:

• policy: returns accepted
• method: money back
• paid by: buyer
• time: 30 days

general lightument:

• category: Business & Industrial > Light Equipment Tools

offer lightument:

• best offers: true
• availability: in stock
• prices: $125.00–$225.00
• item condition: New
• sold #: 14
• started: december 2, 2025
• options: ship-to-home
• in stock #: 5

payments lightument:

• other
• credit card: discover
• wallet: google-pay

shipping lightument:

• service: usps priority mail
• class: expedited
• carrier: usps
• type: calculated
• transit: 3-7 days