7in Electroplated Diamond Grinding/Polishing Pad 400 Grit - Velcro

In this review of the 7in electroplated diamond pad the bottom line is simple: this tool is for professionals and experienced DIYers who need a durable, medium-fine abrasive for surface refinement. The reviewer found the pad especially useful for transition grinding and early-stage polishing on concrete, granite, marble, terrazzo and pool plaster because the electroplated diamond segments maintain aggressive contact while resisting rapid wear. It attaches via a hook-and-loop backer to standard polishers and performs well wet or dry when used as recommended.

Key Features

• Electroplated construction: provides strong, consistent cutting power for longer periods compared with bonded alternatives, reducing pad changes during runs.
• Velcro-backed design: allows quick attachment and removal from compatible polishers so setup and disc swaps are fast on the job.
• #400 grit: offers a medium-fine finish suitable for smoothing scratches and preparing surfaces for higher-grit polishing steps.
• 3mm segment height: gives a balanced wear profile that keeps diamond exposure effective through multiple passes.
• Wet or dry use: accepts both wet and dry operation, giving flexibility depending on the substrate and site conditions.

Who It's For

The pad is aimed at stone and masonry contractors, concrete finishers, and serious DIYers who run angle grinders or polishers and need a 7in pad that bridges grinding and polishing steps. It suits work on concrete, granite, marble, terrazzo and pool plaster where a controlled medium-fine cut is required before moving to finer polishing stages.

Those who should look elsewhere include users needing a very coarse grinding pad for rapid material removal or those requiring ultra-fine finishing pads only; this 400 grit electroplated pad is a transitional abrasive, not a final polish or heavy stock remover.

Pros & Cons

Pros

• Durable electroplated diamonds deliver steady cutting action and slower wear over routine jobs.
• Hook-and-loop backing speeds tool changes and keeps the pad secure during operation.
• Versatile wet or dry rating lets the operator adapt to substrate needs and site constraints.
• 3mm segments balance aggressive bite with usable service life for medium-fine work.

Cons

• Not designed as a final polishing pad, so expect to follow with finer grits for a high-gloss finish.
• Electroplated pads can be less forgiving on delicate edges compared with softer bonds, so careful technique is required.

Specifications

Diameter	7in
Grit Size	#400 grit
Segment Height	3mm
Backing	Hook-and-loop (velcro)
Construction	Electroplated diamond
Recommended Use	Wet or dry with polishers

Our Verdict

The 7in electroplated 400 grit diamond pad is a practical, value-minded choice for professionals and experienced hobbyists needing a reliable transitional abrasive. It offers durable electroplated diamonds and convenient velcro mounting, making it worthwhile for smoothing and pre-polish work on stone and masonry when followed by finer grits for final sheen.

Frequently Asked Questions

Can I use this pad wet and dry?
Yes, the pad is rated for both wet and dry use and performs well either way when mounted on a compatible polisher.

What materials will it work on?
It is suitable for concrete, granite, marble, terrazzo, other natural stone and pool plaster as stated by the manufacturer.

How does the 3mm segment height affect performance?
The 3mm segments provide a balance of cutting life and exposure, so the pad keeps effective diamond contact over multiple passes without wearing out extremely fast.