Amtech Knotted Wire Cup Brush 4 Inch The Knotted Wire Cup Brush 4 Inch is a professional type of wire brush which is intended to remove heavy rust, paint, scale and corrosion. Featuring knotted steel-wire bristles provides two times the bristle points as standard crimped bristles for more aggressive abrasion, the KNOT WIRE WHEEL brush is perfectly suited for penetrating rust and corrosion and the removal of paint, scale and dirt; effectively cleaning and prepping metal surfaces; and for use in hard-to-reach areas, including inside corners and awkward angles.
Its 4-inch diameter makes it ideal for cleaning a larger area at one time, thereby saving time and effort and more effectively. Fits most angle grinders, so the wire cup brush is a great tool for rust removal, wonderful for weld cleaning, heavy paint and scale removal, large area and hard material cleaning, metal grinding, metal cutting, metal welding preparation and so on.
What’s Included
Key Features & Benefits
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Heavy-Duty Knotted Wire Bristles
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Forces itself into attention in even the toughest rust, scale, or paint removal.
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Larger 4-Inch Size
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It covers more space, so it’s good for larger surfaces.
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Hardened Steel Construction
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Durable withstands though use and long lasting even under the toughest conditions.
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Versatile Usage
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Ideal for surface prep, deburring, cleaning weld seams and removing spatter.
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Grinder Compatibility
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Easy to install on most angle grinders.
Application Tips
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· Best used in conjunction with angle grinders.
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· Exert constant pressure—don’t push too deep.
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· Wear goggles, gloves and safety equipment.
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· Perfect for prepping metal prior to welding or painting.
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· Don’t use materials that are soft or easily deformed to avoid material damage.
Product Information
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· Brand: Amtech
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· Style: Knotted Wire Cup Brush
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· Size: 4 Inch
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· Working material: Hard steel (knot wire)
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·Type: hard wood Grinding wheel................. Suitable for carving hard wood.............. Suitable for all types of grinding......... hard wood Grinding wheel.
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· Applications: Rust removal, Removal of paint, cleaning of weld, Scale removal.
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Demonstration Video
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Observe how the Amtech Knotted Wire Cup Brush 4” quickly and efficiently eliminates rust and corrosion from big metal surfaces.
FAQs
1. What is the difference between the 3-inch and 4-inch knotted wire brushes?
The 4-inch model can do bigger work, which is better for large projects.
2. Can it be used on wood?
No, it’s too aggressive for wood or soft wood.
3. Is it compatible with battery grinders?
Yes if the grinder can take the wire brush attachment.
4. Can I use this brush to clean welds?
Sure, it’s great for post-welding clean up.
5. May I use it on stone or masonry?
Yes it will work on block, but it is a metallic product.
6. Will it scratch stainless steel?
It could — try it on a small patch of skin first.
7. Do the wires get loose while in use?
They may shed a little, but the knotted pattern keeps them in place.
8. At what speed should I plow it?
at a moderate to high speed, depending on your grinder.
9. How can I avoid damaging the surface?
Just don’t go overboard on the pressure — let the tool do the work.
10. Is protective gear necessary?
You should generally wear goggles, gloves and clothes that cover your skin.
