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SKU 7010369377
Legacy SKU 66000202763
UPC 00051141538730
Product Number 875705

The Standard Abrasives MD Mini-Brush features medium density (MD) Buff and Blend material for efficient restoration of original, high-quality finishes on fabricated steel parts. While welds or other imperfections might detract from a fine finish, the original luster can still be salvaged even revitalized and renewed with the help of this abrasive brush.

  • Delivers high-quality finishes with sharp cutting and self-renewing aluminum oxide mineral
  • Open web is load resistant, prolonging abrasive service life
  • Non-woven material is spongy and responsive, conforming to most surface geometries
  • Resin bond is heat resistant and withstands repeated wear
  • High Strength Buff and Blend material has great tear resistance
  • Easy to use
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On it's way to you April 5   

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Minimum Order 1 Item
Order Increment 1 Item
  High-Quality Materials
  Multi-Functional
  Adaptable
  Industry Low Price
Product Dimensions
Imperial Metric
Width 4 in 101.6 mm
Diameter 4-1/2 in 114.3 mm
Shipping Dimensions
Weight 1.259 lb
Length 5.125 in
Width 5.125 in
Height 6 in
Color Gray
Maximum Speed 3,500 rpm

PRODUCT FAQ

  1. What is the 3M Standard Abrasives™ MD Mini-Brush used for?

    The Standard Abrasives™ MD Mini-Brush is designed for removing rust, paint, and coatings on metal surfaces.

  2. What are the dimensions of the brush?

    The brush measures 4-1/2 inches in diameter by 4 inches in length with a 5/8-11 internal thread attachment.

  3. What type of density does this mini-brush have?

    This product has medium density which makes it suitable for general purpose blending, finishing and cleaning applications.

  4. . How many brushes come in a pack or case?

    . There is one Standard Abrasive™ MD Mini Brush that comes per case.

  5. . Can I use this mini-brush on a grinder?

    . Yes! It can be attached to an angle grinder or sander with its threaded attachment so that you can get into intricate spaces and hard-to-reach areas for more efficient work results.

For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Restoring Original Finishes

Conventional methods for blending weld traces and other imperfections can be time consuming and unpredictable. The Standard Abrasives™ MD Mini-Brush restores the original appearance of metal parts quickly and easily. Users begin by welding and setting the grain as normal. Then, the Standard Abrasives™ MD Mini-Brush follows to deliver stainless finishes.

The brush is constructed by attaching thin flaps of abrasive material mounted to a fiberglass core. Its design utilizes the ˝face˝ of the material rather than the ˝edge.˝ resulting in fine finishes without leaving the traces of lines associated with ganged arbor hole discs. The flaps are buoyant and responsive, so, rotating on the workpiece they splay out subtly and cover more surface area to eliminate gaps. The brush easily attaches to a die grinder or rotary tool and can be brought to the workpiece if necessary.

Medium Density Material Produces Fine Finishes

The MD Mini-Brush utilizes Standard Abrasives™ Buff and Blend medium density non-woven material. Among Buff and Blend products, the Mini-Brush is the least aggressive, making it ideal for producing fine finishes on irregular shaped parts.

Benefits of Open Web Abrasives

The Standard Abrasives™ MD Mini-Brush is constructed with aluminum oxide mineral and nonwoven nylon fibers bonded with resin, resulting in a dense open web. Resin bonds tolerate heat and help enhance overall durability of the abrasive. Aluminum oxide mineral cuts sharp and is friable, fragmenting under heat and pressure to reveal sharp cutting edges, offering a consistent cut throughout the life of the abrasive.

Gaps between the nonwoven nylon fibers allow swarf and debris to escape, so the abrasive does not get clogged with buildup and keeps cutting sharper for longer. Moreover, the nylon fibers are buoyant and responsive, so you get a consistent cut without gouging or marring the workpiece. Given that maintaining part geometry – especially on fabricated steel parts – is often a top concern, the mini-brush's ability to conform to the substrate without compromising part geometry is one of its key benefits. It helps reduce the likelihood of having to discard scrap parts due to incorrect tolerances, as well as minimizes the need for rework.

Broad Range of Grades

The Mini-Brush is color coded by grade to help users quickly identify the right grade for their application. Available grades range from very fine to extra coarse to meet the needs of many different surfaces. Medium and fine grades will cut less aggressively but leave a finer scratch pattern, whereas coarse grades will cut more aggressively and leave a rougher scratch pattern.

Altogether, the Mini-Brushes provide a quality, fast and easy solution for restoring original steel finishes.

Quality Standard Abrasives™ Solutions for Industrial Applications

The Standard Abrasives brand has supplied quality abrasives to the metalworking industry for over 50 years. Customers rely on our broad offering of high performance products including coated, bonded, and non-woven abrasive lines.

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