Menzerna Heavy Cut Compound 400 (FG400) is an aggressive professional cutting compound. It cuts paint back quickly and easily, and is thus ideal for tackling deep scratches and severe etching. Unlike many cutting compounds, it also finishes down well to give a sharp, high gloss finish that, in most cases, needs only minor refining with a finishing polish afterwards. Menzerna Heavy Cut Compound 400 (FG400) uses ultra-fine, precision-milled aluminium oxide particles suspended in a base of lubricating oils. Like its siblings, it contains no fillers of any kind. Although designed with scratch-resistant clearcoats in mind, it's also suitable for use on conventional hard paint finishes in situations where maximum cut is required. You should only use Menzerna Heavy Cut Compound 400 (FG400) by machine. For best results using a dual action polisher, work it with a Lake Country 140 mm Hydro-Tech Cutting Pad. Only 3-4 pea-sized drops of product are required per 18” x 18” area. After spreading, work it thoroughly at 4000-5000 orbits per minute (speed 4-5 on most dual action machine polishers) until only an oily film remains. Buff off the film carefully using a PB Super Buffing Towel. For best results using a rotary polisher, you should work Menzerna Heavy Cut Compound 400 (FG400) using a Lake Country 140 mm Rotary H-T Cutting Pad. Only 1-2 pea-sized drops of product are required per 18” x 18” area. You should work it thoroughly at 1500-2000 revolutions per minute (speed 3-4 on most rotary polishers) using the zenith method until only an oily film remains. Cut level: 8/10 Gloss level:8/10