Koch-Chemie Gelcoat Ultra Heavy Cut "Gh9.01" Very Coarse Cutting Compound for Gelcoat and Boat Paint (Marine Line) 3000ml

Very coarse cutting compound for gelcoat and boat paint Koch-Chemie Gelcoat Ultra Heavy Cut "Gh9.01"

Gelcoat Ultra Heavy Cut "Gh9.01" is the heavy hitter when you're bringing badly weathered gelcoat and boat paint back to life. This high-cut machine polish pulls out deep scratches, oxidation and scuff marks — say, from fenders rubbing the hull — and sets the surface up nicely for the next polishing steps. Thanks to its silicone-oil-free formula and minimal dust and sling, it's easy to work with and keeps your station clean. It delivers solid results on dark gelcoat and paint colours too.

• Extremely high cutting power: Reliably cuts through deep scratches and heavy weathering.

• Silicone-oil-free: Perfect prep before any follow-up polishing or sealing steps.

• Clean to work with: Low dust and sling for comfortable working.

Maximum cut for heavily abused surfaces

Koch-Chemie Gelcoat Ultra Heavy Cut "Gh9.01" was built specifically for what marine restoration throws at you. With its extremely high cut, it takes out even the deepest scratches, heavy oxidation and stubborn scuff marks. It's made for the first stage of a multi-step polishing job and gets the surface dialled in for whatever comes next.

Efficient to use, with pro-level results

You can run Gelcoat Ultra Heavy Cut "Gh9.01" on both rotary and dual-action machines. For best results, drop five pea-sized blobs onto a suitable pad (e.g. Heavy Cut Pad, Lambswool Pad short or Twisted Wool Pad) and spread the product evenly in a crosshatch pattern at low speed. Then work it out with a rotary at max 1000 rpm or a dual-action on its top setting. Any residue wipes off easily with a microfibre cloth.

Solid prep for the rest of the polishing job

After running Gelcoat Ultra Heavy Cut "Gh9.01", follow up with a finer polish like Gelcoat Heavy Cut "Gh8.01" or Gelcoat Fine Cut "Gf6.01" to bring out a proper high-gloss finish. For lasting protection and a durable seal, reach for products like Gelcoat Finish "Gp1.01", Marine Protective Sealant or Ceramic Boat Hull. These close up the surface pores and protect it from fresh dirt and weathering.