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Body-in-White vehicle body

Surface Preparation Solutions for Body-in-White

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Solutions for the Basic Places in Automotive Design

When the surface really matters – as a physical foundation for your automotive designs and in appearance and production efficiency – 3M delivers. Our wide variety of abrasive solutions includes micron-graded diamond mineral abrasive and our Precision-Shaped Grain (PSG) technology – microreplicated structures that contain abrasive minerals and enable extremely precise, consistent finishes. They are indicated in manual applications and can be configured into your robotic systems to maximize production efficiency.

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    Cloth Discs

    3M cloth-backed discs have been helping automotive OEM professionals improve both finishes and process efficiency for decades. Our 3M™ Wetordry™ discs were originally introduced for wet sanding, which helped operators keep the work clean and visible during sanding. Today, a range of cloth-backed 3M abrasive discs meets specific needs for automotive sanding and grinding applications requiring refinement and durability.

    • 3M™ Cubitron™ II Hookit™ Cloth Disc 947A
      Combining our PSG abrasive grains with an anti-friction grinding aid and a durable, X-weight cloth backing, 3M™ Cubitron™ II Hookit™ Cloth Disc 947A is ideal for use on substrates including carbon steel, nickel alloys, aluminum and composites. 3M™ Hookit™ hook-and-loop attachment won’t collect dust, as adhesives can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ WetorDry™ Cloth Disc 481W
      These discs are designed for use in paint prep and defect highlighting. The 481W features silicone carbine mineral abrasive and a durable, water-resistant polyester screen backing. This disc suits a versatile range of automotive applications.
    • 3M™ Hookit™ Clean Sanding Disc 900DZ
      Featuring a ceramic abrasive grain and a light, flexible J-weight cloth backing, 3M™ Hookit™ Clean Sanding Disc 900DZ is ideal for sanding harder automotive metals such as carbon steel, stainless steel and exotic alloys. A multi-hole pattern that evacuates dust at a higher rate versus traditional five- or six-hole constructions, as well as an anti-static coating helps reduce disc loading. 3M™ Hookit™ hook-and-loop attachment won’t collect dust, as adhesives can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ Wetordry™ Cloth Disc 281W
      These discs were designed for use for either dry or wet applications when sanding metal surfaces. Available in grades from P1000 to P500, for jobs such as finishing e-coat primer and metal, the 281W features an aluminum oxide mineral abrasive and a durable, waterproof cloth mesh backing.
    • 3M™ Stikit™ Cloth Disc Roll 202DZ
      Combining an aluminum oxide abrasive, light and flexible J-weight cloth backing and a static-resistant coating that resists loading, 3M™ Stikit™ Cloth Disc Roll 202DZ delivers durability and long disc life even when sanding around contours. Disc rolls are ideal for fast access in high-production environments, and pressure-sensitive adhesive attachment makes changing the discs almost effortless during multi-step finishing processes.

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    Film Discs

    Our portfolio of flexible, durable discs is available with conventional abrasives, our PSG technology or diamond abrasives. Combined with the uniformity and conformability of a film backings, our abrasives produce consistent finishes on flat surfaces and around even subtle curves or contours.

    • 3M™ Cubitron™ II Hookit™ Film Disc 775L
      These discs are ideal for a broad range of stock removal applications on a wide variety of substrates. They feature our PSG abrasive technology for consistency and high performance. The 3M Clean Sanding hole pattern evacuates dust at a higher rate compared to conventional patterns, which preserves disc life. This design doesn’t require alignment with disc pads, making disc changes quick and simple. 3M™ Hookit™ hook-and-loop attachment won’t collect dust, as adhesive backings can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ Hookit™ Clean Sanding Disc 360L
      Featuring a 3 mil film backing, this disc is ideal for surface preparation on primers, base coats and hard or soft composites. In addition to standard five-hole or six-hole configuration, it features a multi-hole pattern that evacuates dust at a higher rate, which preserves disc life. 3M™ Hookit™ (hook-and-loop attachment) won’t collect dust, as adhesive backings can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ Hookit™ Clean Sanding Film Disc 375L
      For use on metal, this film-backed abrasive disc combines toughness with finesse. The aluminum oxide abrasive removes stock quickly and efficiently, and the film backing is both flexible and tear resistant. It features a multi-hole pattern that evacuates dust at a higher rate versus traditional five- or six-hole constructions, which preserves disc life. 3M™ Hookit™ hook-and-loop attachment won’t collect dust, as adhesives can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ Diamond Microfinishing Film PSA Disc 675L
      This disc is ideal for extremely precise stock removal on applications requiring close tolerances on hard surfaces. It features a sharp diamond mineral abrasive on a tough, flexible polyester film backing. A pressure-sensitive adhesive attachment makes changing discs almost effortless during multi-step finishing processes. The 675L is available in grades from 9 microns to 125 microns.
    • 3M™ Microfinishing PSA Film Disc Roll 366L
      Featuring micron-graded aluminum oxide abrasive, these polyester film-backed discs are designed for precise, consistent finishing on contoured metals and composites. Disc rolls are ideal for fast access in high-production environments, and the pressure-sensitive adhesive attachment makes changing the discs almost effortless during multi-step finishing processes. 3M™ Microfinishing PSA Film Disc Roll 366L is available in grades from 80 microns to 200 microns.

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    Melt Sealing Tapes

    Designed for flowability when heated in conventional paint ovens, our melt sealing tapes are ideal for filling holes and seams and creating smooth, consistent surfaces. We provide these tapes for design flexibility, including thicker tapes for use on uneven spaces and thin, .5 mm tapes for applications where packaging space is a particular challenge.

    • 3M™ Melt Sealing Tape 5230
      This white .5 mm conformable structural sealing tape is free of polyvinyl chloride (PVC) and formulated to seal automotive body joints on hidden surfaces. It is ideal for sealing roof ditches, combined panel edge seals, holes and body joints.
    • 3M™ Melt Sealing Tape 5231
      This white 1.0 mm conformable, PVC-free structural sealing tape is formulated to seal automotive body joints on hidden surfaces. It is ideal for sealing roof ditches, combined panel edge seals, holes and body joints.
    • 3M™ Melt Sealing Tape 5232
      This white 1.5 mm conformable, PVC-free structural sealing tape is formulated to seal automotive body joints on hidden surfaces. It is ideal for sealing roof ditches, combined panel edge seals, holes and body joints.

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    Paper Discs

    For automotive surface prep applications requiring durable, precise abrasives with a conformable paper backing, 3M incorporates our high abrasive technologies into paper-backed discs. They are available with conventional abrasives and with our PSG technology. They are also available in multi-hole dust extraction patterns including our Clean Sanding configuration. Our Hookit™ and Stikit™ attachment or convenient disc roll packaging saves time and money. Many of these paper discs can be used for aggressive stock removal.

    • 3M™ Cubitron™ II Hookit™ Clean Sanding Paper Disc 732U
      Great for applications focused primarily on stock removal where edge retention is not a primary concern, 3M™ Cubitron™ II Hookit™ Clean Sanding Paper Disc 732U is suitable for use on a wide range of metals and composites. These C-weight, paper-backed discs feature our PSG abrasive technology for excellent consistency. The 3M Clean Sanding hole pattern evacuates dust at a higher rate, preserving disc life. This design doesn’t require alignment with disc pads, making disc changes quick and simple. 3M™ Hookit™ hook-and-loop attachment won’t collect dust, as adhesives can, and makes disc attachment, removal and reattachment clean and easy.
    • 3M™ Stikit™ Paper Disc Roll 751I
      Well-suited for medium- to heavy-duty metalworking on a variety of substrates, 3M™ Stikit™ Paper Disc Roll 751I features a ceramic blend abrasive grain and a durable E-weight paper backing that resists edge shelling and is less likely to yield or deflect during use. Disc rolls are ideal for fast access in high-production environments, and the pressure-sensitive adhesive attachment makes changing the discs almost effortless during multi-step finishing processes.
    • 3M™ Stikit™ Paper Disc Roll 763U
      Suitable for heavy-duty surface prep and metal finishing, 3M™ Stikit™ Paper Disc Roll 763U contains a ceramic/aluminum oxide abrasive blend on a heavy F-weight paper backing. Disc rolls are ideal for fast access in high-production environments, and the pressure-sensitive adhesive attachment makes changing the discs almost effortless during multi-step finishing processes.

Need Help Finding the Right Solution?

3M is constantly working to meet the evolving challenges of automotive OEM and Tier suppliers worldwide. If you need help finding an existing solution or would like to talk about specific ideas you’re working on, get in touch with us.
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