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Polish for P1200 sanding marks and paint mist

Koch-Chemie Heavy Quick Cut B9.01 Polishing Compound

Koch-Chemie

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Sale price £17.99
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Innovative silicone-free machine polish for the simple and fast removal of paint mists and sanding traces from 1,200 grit and higher.

  • Removes heavy sanding marks
  • Cuts paint mist quickly
  • Works on fresh paint
  • Suitable for original paint
  • Silicone-free formula
  • Low dust working behaviour
  • No spraying during use
  • Prepares paint for refining

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  • Cut 9.0
  • P1200 Mark Removal
  • Heavy Cut Compound
  • Gloss 5.5

The Drivers HQ

Expert Notes

Koch-Chemie Heavy Quick Cut B9.01 is a fast-cutting machine compound for repair paintwork, original paintwork and situations where strong correction is needed without excessive dust or product spray. It is designed to remove paint mist and sanding traces from P1200 grit and finer, making it useful after sanding, refinishing and heavier correction work. Compared with lighter polishes, B9.01 is a serious cutting compound, so it should be used on a test section first and refined afterwards where maximum gloss is required. Koch-Chemie recommends machine polishing in a crosswise motion at medium speed and medium pressure, then repolishing with Micro Cut for the best surface finish.
Simon Hole Simon HoleFounder, The Drivers HQ

Perfect For / Suitable Surfaces

  • Automotive paintwork
  • Gloss painted panels
  • Weathered paintwork
  • Soft paint systems
  • Refinished paint with testing
  • Paint mist contamination
  • Repair coatings

Do not apply to hot surfaces. Avoid matte paint, satin paint, textured plastics, rubber trim, unpainted plastics, vinyl wraps and PPF. Mask trim and panel edges before machine polishing.

Technical Specifications

Product Type
Strong Polishing Compound
Brand
Koch-Chemie
Product Name
Heavy Quick Cut B9.01
Product Code
B9.01
Container Size
250ml
Article Number
419250
Formula Type
Silicone-Free Machine Polish
Cut Rating
9.0
Gloss Rating
5.5
Sanding Mark Removal
From P1200 Grit And Finer
Primary Use
Paint Mist And Sanding Trace Removal
Paint Suitability
Repair Coatings And Original Coatings
Application Method
Machine Polishing
Recommended Motion
Crosswise Polishing
Machine Speed
Medium Speed
Pressure
Medium Pressure
Follow-Up Polish
Koch-Chemie Micro Cut
Hot Surface Use
Not Suitable
Protection Product
No

Paintwork preparation

  1. Wash the vehicle thoroughly.
  2. Remove bonded contamination where required.
  3. Dry the paintwork completely.
  4. Inspect sanding marks, paint mist or defects under suitable lighting.
  5. Check paint thickness where required.
  6. Mask trim, edges and sensitive areas.
  7. Shake the bottle before use.
  8. Complete a small test section first.

Machine polishing

  1. Apply Heavy Quick Cut B9.01 to a suitable polishing pad.
  2. Spread the compound across a small working area.
  3. Polish in a crosswise motion.
  4. Use medium machine speed.
  5. Use medium pressure during the cutting stage.
  6. Keep the pad moving to manage heat.
  7. Work until the sanding marks or paint mist have been corrected.
  8. Remove residue with a clean microfibre cloth.
  9. Inspect the section before moving on.

Refining stage

  1. Check the finish for haze or compound marks.
  2. Repolish with Koch-Chemie Micro Cut for the best surface finish.
  3. Use a clean finishing pad for refinement.
  4. Remove all polish residue from panel gaps and trim edges.
  5. Panel wipe if preparing for ceramic coating.
  6. Apply protection after final surface preparation.

Top Tip: Use B9.01 where fast heavy correction is actually needed, then refine with Micro Cut to improve final gloss and clarity.

PerformanceBenefits

Removes sanding marks efficiently
Keeps dust levels low
Cuts faster than H8.02

Best Paired With

Frequently Asked Questions

B9.01 is used for machine removal of paint mist and sanding traces from P1200 grit and finer.

Koch-Chemie rates Heavy Quick Cut B9.01 at Cut 9.0 and Gloss 5.5.

Yes, Koch-Chemie lists Heavy Quick Cut B9.01 as silicone-free.

Yes, Koch-Chemie states it is suitable for freshly painted surfaces when used correctly.

No, it is designed for machine polishing.

Yes, it removes sanding traces from P1200 grit and finer.

No, it is a cutting compound, not a wax, sealant or coating.

Yes, Koch-Chemie recommends repolishing with Micro Cut for the best surface finish.

B9.01 focuses on fast correction of paint mist and sanding traces, especially on repair coatings, while H9.02 is the heavier general correction compound for severe weathering and deep scratches.

This listing is for Koch-Chemie Heavy Quick Cut B9.01 in 250ml.

HQ Suggests Tips & Insights

  1. Use a test section before full correction.
  2. Use only on suitable paint systems.
  3. Do not polish hot panels.
  4. Mask trim and sharp edges first.
  5. Keep polishing pads clean.
  6. Use medium speed and pressure.
  7. Refine afterwards with Micro Cut.
  8. Panel wipe before ceramic coating.
  9. Available online with UK-wide delivery from The Drivers HQ.

The Brand

Koch-Chemie

Koch-Chemie began in Germany in 1968 when trained carpenter Hans Koch started developing his own polishing compounds after becoming dissatisfied with the vehicle care products available at the time. His interest in surface finishing became the foundation of the company, with the first Koch-Chemie products moving into serial production during the 1970s. The business has remained based in Unna, Germany since 1971 and has expanded from polishing into vehicle cleaning, preparation, car wash chemistry, workshop products and industrial cleaning.

That history still shows clearly in Koch-Chemie's paint correction range. Heavy Cut, Fine Cut and Micro Cut compounds are designed as defined stages of correction and refinement, supported by corresponding pads and preparation products rather than being treated as isolated bottles of polish.

A Detailing Range Built as a System

A Detailing Range Built as a System

Koch-Chemie approaches vehicle care as a complete chemical and process system. Its detailing catalogue covers pre-cleaners, wheel cleaners, foams, shampoos, fallout and tar removal, polishing compounds, sealants, interior cleaners, glass products and specialist treatments. Familiar products including Green Star, Pol Star, Heavy Cut H9.02, Fine Cut F6.01 and Micro Cut M3.02 each occupy a specific position within that process.

The company's ProductSystem takes this further by dividing its chemistry into ten application groups with individual colour codes. Product abbreviations and technical information are incorporated into the labelling so that users can identify what a product is designed to do and where it belongs within the wider system. This structured approach is one of the most identifiable characteristics of Koch-Chemie.

Developed and Produced in Unna

Developed and Produced in Unna

Koch-Chemie operates its own research and development department at its site in Unna, Germany. Formulations are tested for measurable properties including durability, gloss and hydrophobic behaviour, with development also taking material compatibility, regional conditions and professional working processes into account. The company works directly with the automotive industry, car wash operators and industrial customers when developing and refining its chemistry.

Production is also carried out in Unna, where Koch-Chemie mixes its formulations, fills and labels containers and distributes finished products. Its production operation works within DIN EN ISO 9001 quality management and DIN EN ISO 14001 environmental management systems. This combination of in-house development, manufacturing and a clearly defined product system is a substantial part of what separates Koch-Chemie from brands that primarily source and market third-party formulations.

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