Koch-Chemie Heavy Cut 9.02

Maximum cut compound

Koch-Chemie Heavy Cut 9.02

SKU KC-458250 Rated 5.0 out of 5.0. 1 review Ask a question

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£17.99

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Size 250ml

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Koch-Chemie Heavy Cut 9.02 Koch-Chemie Heavy Cut 9.02 £17.99

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Koch-Chemie Heavy Cut 9.02 is a silicone-oil-free coarse polishing compound, aimed at detailers reworking heavily weathered paint with deep scratches.

  • Removes severe paint defects
  • Cuts P1200 sanding marks
  • Corrects deep scratches
  • Restores weathered paintwork
  • Removes paint mist
  • Low dust working behaviour
  • Silicone-oil-free formula
Read the full description

Full Description

Koch-Chemie Heavy Cut 9.02 is a silicone-oil-free coarse polishing compound, aimed at detailers reworking heavily weathered paint with deep scratches.

Innovative machine polish for fast reworking of heavily weathered paintwork, elimination of deep scratches, and effective removal of paint mists and sanding traces of up to 1,200 grain. With its extremely homogeneous abrasive grain, Heavy Cut 9.02 achieves an extremely high level of cut with an excellent gloss level. Can be polished for prolonged periods without sticking and with low dust formation.

Key features:

  • Removes paint mist and 1,200 grain sanding traces
  • Abrasion level 9,0, gloss level 6,0
  • Extremely homogeneous abrasive grain
  • Low dust formation

More in Heavy Cut Compounds and from Koch-Chemie.

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Key features

  • Cut 9.0
  • Gloss 6.0
  • P1200 Mark Removal
  • Heavy Cut Compound

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Expert Notes

Koch-Chemie Heavy Cut H9.02 is the stronger compound choice for correction work where Heavy Cut H8.02 or Fine Cut F6.01 are not aggressive enough. It is built for heavily weathered paint, deep scratches, paint mist and sanding traces up to P1200, using a very uniform abrasive system that delivers high cut without becoming sticky too quickly. The Gloss 6.0 rating is strong for a compound this aggressive, but H9.02 is still a cutting compound, not a final finishing polish. On most dark, soft or sensitive paints it should be refined afterwards with Koch-Chemie Micro Cut M3.02 or Micro Cut & Finish P3.01. Pad selection controls how hard it cuts. Lambskin gives maximum correction, while the Heavy Cut Pad gives a more controlled approach on finer sanding marks.

Perfect For / Suitable Surfaces

  • Automotive paintwork
  • Gloss painted panels
  • Weathered paintwork
  • Soft paint systems
  • Refinished paint with testing
  • Commercial vehicle paintwork
  • Motorcycle paintwork

Caution: Check paint thickness, suitability and compatibility before machine polishing. Do not use on hot surfaces. Avoid matte paint, satin paint, textured plastics, rubber trim, unpainted plastics, vinyl wraps, PPF and sensitive trims. Mask edges and adjacent trim before correction work.

Technical Specifications

Product Type
Coarse Polishing Compound
Brand
Koch-Chemie
Product Name
Heavy Cut H9.02
Product Code
H9.02
Formula Type
Silicone-Oil-Free Machine Polish
Cut Rating
9.0
Gloss Rating
6.0
Sanding Mark Removal
Up To P1200
Primary Use
Heavy Defect Removal And Paint Correction
Application Method
Machine Polishing
Recommended Machine
Rotary Polisher
Recommended Pad For P1200-P2500
Lambskin Pad
Recommended Pad For P1500-P3000
Heavy Cut Pad
Paint Type
Soft And Scratch-Resistant Paint Systems
Dust Behaviour
Low Dust Formation
Working Behaviour
Long Polishing Cycle
Follow-Up Polish
Micro Cut M3.02 Or Micro Cut & Finish P3.01
Available Sizes
250ml And 1L
250ml Article Number
458250
1L Article Number
458001
Protection Product
No

How To Use

Paintwork preparation

  1. Wash the vehicle thoroughly.
  2. Remove bonded contamination before polishing.
  3. Dry the paintwork completely.
  4. Inspect defects under suitable lighting.
  5. Measure paint depth where required.
  6. Mask sensitive trims, edges and adjacent surfaces.
  7. Choose a small test section before polishing the full vehicle.
  8. Shake the bottle before use.

Heavy correction

  1. Apply Heavy Cut H9.02 to a lambskin pad for maximum cut.
  2. Spread the compound across a small section before increasing speed.
  3. Work the polish in a crosswise pattern.
  4. Use medium machine speed and medium pressure.
  5. Keep the pad moving to control heat.
  6. Check the panel temperature regularly.
  7. Remove residue with a clean microfibre cloth.
  8. Repeat only where defects remain.

Controlled correction

  1. Use the Koch-Chemie Heavy Cut Pad where a more controlled cut is required.
  2. Apply a small amount of compound to the pad.
  3. Work one section at a time.
  4. Use slow overlapping passes.
  5. Reduce pressure towards the end of the polishing cycle.
  6. Wipe residue away fully.
  7. Inspect the finish before moving to the next section.

Refining after H9.02

  1. Inspect the paint for haze, trails or compound marks.
  2. Refine with Koch-Chemie Micro Cut M3.02 for maximum clarity.
  3. Use Micro Cut & Finish P3.01 where light refining and finish improvement are required.
  4. Use a clean finishing pad for the refining stage.
  5. Panel wipe before applying ceramic coating.
  6. Apply wax, sealant or coating after final surface preparation.

Top Tip: Use H9.02 only when the paint actually needs maximum cut. Start with a test section, then refine afterwards to remove compound haze and improve final gloss.

Performance Benefits

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

Frequently Asked Questions

What is Koch-Chemie Heavy Cut H9.02 used for?

H9.02 is used for heavy machine polishing, deep scratch removal, paint mist removal, weathered paint correction and sanding mark removal up to P1200.

What are the cut and gloss ratings?

Koch-Chemie rates Heavy Cut H9.02 at Cut 9.0 and Gloss 6.0.

How is H9.02 different from H8.02?

H9.02 offers higher cut and is rated for sanding traces up to P1200, while H8.02 is slightly less aggressive and rated up to P1500.

Is Heavy Cut H9.02 silicone-oil-free?

Yes, Koch-Chemie lists H9.02 as a silicone-oil-free coarse polishing compound.

Can H9.02 remove sanding marks?

Yes, it is designed to remove sanding traces up to P1200 when used with the correct machine and pad.

Which pad should I use with H9.02?

Use a lambwool pad for P1200 to P2500 sanding marks or a Heavy Cut Pad for P1500 to P3000 sanding marks.

Can I use H9.02 by hand?

No, it is designed for machine polishing, especially rotary polishing.

Does H9.02 leave protection behind?

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

Should I polish again after H9.02?

Yes, refine with Micro Cut M3.02 or Micro Cut & Finish P3.01 for the best final gloss.

What sizes are available?

Koch-Chemie Heavy Cut H9.02 is available in 250ml and 1L sizes.

HQ Suggests Tips & Insights

  1. Use H9.02 for serious defect removal only.
  2. Complete a test section before full correction.
  3. Measure paint depth before heavy cutting.
  4. Use lambskin when maximum cut is required.
  5. Use the Heavy Cut Pad for more control.
  6. Keep pads clean during polishing.
  7. Mask trim, edges and delicate areas.
  8. Refine afterwards for better final gloss.

From the Advice Centre

Guides Featuring This Product

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Koch-Chemie polishes explained: Koch-Chemie Heavy Cut H9.02 on The Drivers HQ display plinth in front of a red Hyundai hatchback covered in snow foam Koch-Chemie Polishes Explained: H9.02, M2.02 and P3.01We explain the differences between Koch-Chemie H9.02, M2.02 and P3.01, including cut, finishing and built-in protection. Our guide helps you choose a...

The Brand

Koch-Chemie

Koch-Chemie (often written Koch Chemie) is a German car care maker from Unna. Hans Koch, a trained carpenter unhappy with the vehicle care products of the time, began mixing his own polishes in his garage in 1968 and founded Koch-Chemie GmbH. The company moved to its Unna headquarters in 1971, developed its Star range in 1990, and has been part of the French Novarc Group since June 2017. It is one of the few companies in the trade that researches, produces and sells its own products, with development and production in Unna, and many of its products are tested and approved by car manufacturers.

At The Drivers HQ we stock Koch-Chemie online with UK delivery and in our Ilkeston shop. Our customers' favourites are Green Star, Gentle Snow Foam, Pol Star, Micro Cut M3.02 and One Cut & Finish P6.02.

Shop all Koch-Chemie
Koch-Chemie Micro Cut and Finish P3.01, Heavy Cut H9.02, Micro Cut M2.02 and Headlight Polish 1 on a black display plinth in a photo studio

Koch-Chemie products by job

Pre-wash and wash. Gentle Snow Foam is a pH-neutral, cherry-scented foam that does not attack waxed or sealed paint. Use about 20ml per litre of water in a foam sprayer, or 50ml in 10 litres as a hand-wash shampoo, and add 10 to 30ml of Green Star to the mix for an active foam on stubborn dirt and insects. Green Star is the alkaline universal cleaner: 1:5 to 1:30 for exteriors and engines, 1:10 to 1:20 for interiors and textiles. Never let it dry or use it on hot panels. Active Foam, Autoshampoo and Ceramic Effect Shampoo complete the wash range, and Magic Wheel Cleaner is the wheel cleaner.

Decontamination and preparation. Eulex and Eulex M remove adhesive and stains, Orange Power lifts adhesive, tree resin and rubber marks, and Panel Preparation Spray cleans the paint before polishing or coating.

Machine polishing. Koch-Chemie gives its machine polishes a cut and gloss rating, and Heavy Cut H9.02, Fine Cut F6.01 and Micro Cut M3.02 are silicone-oil-free. Heavy Cut H9.02 (cut 9.0, gloss 6.0) takes out deep scratches and sanding marks up to 1,200 grit, Fine Cut F6.01 (cut 6.0, gloss 7.0) removes wash marks and 2500-grade sanding marks, and Micro Cut M3.02 (cut 3.2, gloss 9.0) removes holograms, fine scratches and P3000 sanding marks for the final gloss. One Cut & Finish P6.02 (cut 6.0, gloss 8.0) corrects and seals in one step. We also stock Heavy Cut H8.02, Heavy Quick Cut B9.01, Micro Cut M2.02, Micro Cut & Finish P3.01 and the P1.03 and P2.03 finish polishes, plus Headlight Polish 1 and 2 for clouded lenses.

Gloss and protection. ProtectorWax, QF Quick Finish, Quick & Shine and Finish Spray Exterior keep the gloss up between details, and the Coating Towel 5 Pack wipes off residue.

Interior, plastics and glass. Pol Star cleans textiles, leather and Alcantara, COLOURLOCK Leather Care looks after leather, and Allround Surface Cleaner and MZR clean hard interior surfaces. Plast Star is a silicone-free plastic care, alongside Gummifix, Motorplast and Hydro Plast Care. Glas Star and Glass Cleaner Pro clean glass, and Fresh Up tackles odours.

Shop Koch-Chemie by type: snow foam, all purpose cleaners, heavy cut compounds, finishing polishes, quick detailers and glass cleaners.

Koch-Chemie Micro Cut and Finish P3.01 and Heavy Cut H9.02 on a detailing trolley in front of a black BMW M2 Competition having its bonnet machine polished

Choosing a Koch-Chemie polish

Koch-Chemie rates its machine polishes for cut (how much they remove) and gloss (how much shine they leave), so you can pick the stage that matches the paint.

  • Heavy Cut H9.02 (cut 9.0, gloss 6.0) is the first stage on heavily weathered paint, deep scratches and sanding marks up to 1,200 grit. It suits soft and scratch-resistant paint. Koch-Chemie recommends a rotary polisher at medium speed and pressure, then a finishing stage with Micro Cut M3.02 or Micro Cut & Finish P3.01.
  • Fine Cut F6.01 (cut 6.0, gloss 7.0) is the middle stage for medium to heavily weathered paint and wash marks, at no more than 2,000rpm. Remove any streaks it leaves with Micro Cut M3.02.
  • Micro Cut M3.02 (cut 3.2, gloss 9.0) is the finishing polish. It removes holograms and fine scratches rather than filling them, which makes it the one to finish dark and sensitive colours.
  • One Cut & Finish P6.02 (cut 6.0, gloss 8.0) corrects and seals in one step, with carnauba wax, on a dual action polisher with at least a 15mm stroke: five pea-sized drops on the pad. Keep it off painted plastics and rubber.

Use a separate pad for each polish, keep off hot panels and store polishes away from frost and heat. For the pads and machines, see our polishing pads and polishing machines.

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