Koch Chemie Gelcoat Heavy Cut for Oxidized Marine Gelcoat | Fort Myers

Gelcoat Heavy Cut is the abrasive machine polish for heavily weathered, grayed, and stressed gelcoats and boat paints. When Southwest Florida sun has chalked a hull, Fort Myers correction techs reach for Heavy Cut with a Heavy Cut or wool pad before refining with Fine Cut or Finish.

Features / Why Pros Use It

• High sanding power for heavily oxidized and grayed gelcoat
• Silicone oil-free; easy wipe-off after machine work
• Rotary or DA compatible with Heavy Cut Pad, short lambswool, or twist wool
• Step-one compound in serious gelcoat restoration sequences

How to Use

• Shake well; apply ~5 pea-sized drops to Heavy Cut Pad or appropriate wool pad
• Work crosswise; wipe and inspect cut before stepping down abrasives
• Follow with Fine Cut / Micro Cut / Finish for clarity
• Do not polish hot gelcoat; check compatibility on sensitive finishes

Shop Koch Chemie Marine at MDSC

Marine Detail Supply Co. stocks the full Koch Chemie Marine Line for professional boat detailing across Fort Myers and Southwest Florida. Pick up at HQ — 14231 Jetport Loop, Fort Myers — or order for same-day shipping when you qualify. Ask our team about pads, machines, and the right cut level for your gelcoat or paint correction job.

• FREE Shipping on all domestic U.S. orders over $200
• Orders under $200 ship for a flat rate of just $5
• Same-Day Shipping on orders placed before 2:00 PM ET, Monday–Friday (business days)
• All orders ship via UPS Ground or USPS Priority Mail
• Discounted UPS Overnight shipping rates available
• Questions? Call us at 800-248-6130