Merryland FC1107414-10 4.5 inch 80 Grit Flap Disc 🛠

This 4.5 inch flap disc from Merryland speeds up metal surface work while keeping control for intermediate grinding and finishing. It is designed for use on angle grinders to remove material, smooth welds, and prepare metal for painting, offering faster stock removal and consistent results according to the manufacturer.

Key Points

The flap wheel comes in a 10-pack and uses blue zirconium corundum abrasive, which delivers steady cutting on stainless steel, iron, and general steel. It is shaped in a T29 profile, so the angled flaps follow contours and curved surfaces more easily than flat discs, making it useful for edges and recessed areas. 🛠️

A reinforced fiberglass backing is included to absorb vibration and reduce chatter during use, which helps maintain a smoother finish and extends the usable life of each disc. Keep in mind that the grit 80 option is aimed at intermediate material removal and smoothing after coarser grits, rather than fine polishing. ⚠️

The pack includes safety information in the box and is intended for common angle grinder sizes with a 22.23 mm arbor hole. Performance characteristics like maximum rotational speed are provided according to applicable European standards, listed in the technical section below.

Technical Specifications

• Name: Merryland Flap Disc 4 1/2 inch Metal FC1107414-10
• Diameter: - 115 mm (4.5 inch)
• Grit: - 80 Grit
• Profile and type: - T29 flap wheel, zirconia alumina (blue zirconium corundum)
• Arbor hole: - 22.23 mm, fits standard angle grinders
• Maximum speed: - MAX RPM 13300 (according to EN 13743 and MPA certification)

Usage Recommendations

Use moderate pressure and keep the disc moving to avoid heat buildup and premature wear, especially when working stainless steel or thin sheet metal. For best results when preparing a surface for paint or removing weld seams, follow a progression from coarser to medium grits; this 80 grit disc works well after an initial 40 or 60 grit pass. Wear appropriate PPE including eye protection and a respirator when grinding metal to limit exposure to dust and particles. 🧤

Consider storing the discs in a dry place away from extreme humidity to preserve the abrasive bond and backing integrity. Note that very fine finishing or mirror polishing will require finer abrasives or polishing pads, since this flap disc focuses on material removal and surface leveling rather than final polish.