menzerna Heavy Cut 400 automotive polish 250 ml (8 oz) — heavy-cut correction with high gloss in one step

Menzerna Heavy Cut 400 is a high-performance heavy-cut automotive polish that removes moderate scratches and sanding marks while delivering strong gloss in a single-step process.

Designed for professional detailers and serious enthusiasts, this concentrated formula (250 ml / 8 fl oz) blends aggressive abrasion with refined finishing agents to reduce defects quickly without demanding multiple products. Formerly known as Fast Gloss 400, Menzerna Heavy Cut 400 balances cut and shine so you can correct paintwork and reveal a deep, reflective finish faster than using separate compounds and polishes.

How quickly does it remove scratches and sanding marks?

Heavy Cut 400 uses an engineered abrasive matrix to tackle moderate scratches, swirl marks, and P1500–P2500 sanding haze efficiently. Expect visible defect reduction in one pass with a rotary or orbital polisher when used with the recommended pads and speeds.

• Cut rating: 8/10 — high material removal for correction
• Works well on clearcoats needing heavy leveling
• Best results with compatible cutting pads
• Follow-up refining step may be used for ultra-fine gloss

What machines and speeds should I use for best results?

Menzerna Heavy Cut 400 supports both rotary and orbital machines; adjust RPMs as you progress from heavy correction to finish. Start at lower speeds to spread product, then increase to recommended ranges to maximize cutting action while monitoring heat build-up.

• Rotary: start 800–1,500 rpm, finish 1,800–2,000 rpm
• Orbital: use a lower-to-upper rotational speed range
• Use heavier pressure for stubborn defects, then lighten to finish
• Work in overlapping passes for uniform correction

Will it leave a glossy finish or do I need a separate polish?

This formula provides both substantial cutting power and a strong gloss yield, rated 8/10 for shine. In many cases it removes defects and leaves a showroom-quality surface in one step, though some users opt for a fine finishing polish for absolute mirror clarity.

• Gloss rating: 8/10 — high reflective quality
• Combines cutting abrasives with gloss-enhancing agents
• Ideal when time or product count needs to be minimized
• Follow with a fine polish if pushing for flawless clarity

How should I apply it to get consistent, repeatable results?

Consistent technique and correct pad choice are key. Apply a small amount to the pad, work in sections, and inspect under good light. Wipe residue with a clean microfiber and check for remaining defects before moving on.

• Apply pea-sized drops across the pad for even dispersion
• Work 60–90 cm2 (hand-sized) sections at a time
• Use clean, dedicated cutting pads to avoid contamination
• Finish with a microfiber cloth and optional refining polish

Who is this for? Menzerna Heavy Cut 400 is aimed at professional detailers, restoration shops, paint correction specialists, and committed car enthusiasts who need a single-product solution for significant defect removal without sacrificing gloss. If you regularly correct clearcoat damage, wet-sanding marks, or pronounced swirl marks and want a time-saving, powerful polish with predictable machine settings, this product delivers a strong balance of cut and shine in a compact 250 ml container.