3M Paper Sheet 346U, 2-3/4 in x 17-1/2 in 40 D-weight, 100/Carton, 5 Cartons/Case

• Load resistant open-coat feature enables longer use before replacement
• Sheets are conformable to various workpieces and usable by either hand or machine
• Sheets come in a number of sizes to accommodate various applications
• Strong, D-weight paper backing supports aggressive sanding
• Tough aluminum oxide abrasive cuts fast and performs well on many surfaces

3M Paper Sheet 346U is constructed of aluminum oxide and comes in a range of grades and sizes to accommodate many different projects. The paper backing is durable for coarse sanding, yet flexible enough to be used on curved surfaces. Its cut-rate and durability make this an excellent choice for blending the joints of connecting pieces in wood- and metal-working.

Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.

Trusted 3M Paper Sheet

The 3M Paper Sheet 346U offers reliable quality from a trusted brand. This model is designed with a strong D-weight paper backing, ensuring durability during aggressive sanding tasks. The brand's reputation guarantees consistent performance across projects.

Ideal for professionals and DIYers alike, this sheet supports tough sanding jobs while maintaining flexibility. Its construction suits various surfaces, making it a versatile choice for many applications.

Precise Size And Format

Each sheet measures 2-3/4 inches by 17-1/2 inches, providing a convenient size for detailed work. The format supports both hand and machine sanding, adapting to different working styles and project needs.

This size fits well for sanding curved or flat surfaces, offering control and efficiency. The open-coat feature helps maintain performance by reducing dust buildup during use.

Durable D-Weight Backing

The 40 D-weight paper backing is strong enough to handle aggressive sanding without tearing. This backing supports the aluminum oxide abrasive, allowing the sheet to cut fast and last longer.

Thanks to this backing, the sheets conform well to various workpieces. This flexibility makes them suitable for sanding joints and connecting pieces in wood and metal projects.

Effective Aluminum Oxide Abrasive

The sheets use tough aluminum oxide abrasive, known for its fast cutting and long-lasting sharpness. This mineral maintains sharp points longer than natural abrasives, improving sanding efficiency.

Its open-coat design spaces the abrasive grains to reduce clogging from dust. This feature extends the usable life of each sheet, especially when sanding soft materials.

Convenient Pack Count Options

Each carton contains 100 sheets, and the product is sold in cases of 5 cartons. This pack size ensures you have plenty of sheets for large or multiple projects without frequent reordering.

The bulk packaging suits workshops and professionals who need consistent supply. It also offers good value by reducing the need for frequent purchases.