Designed by Koyo-Sha, this buff disc features bias-cut sisal and cloth layers that create a flexible yet effective finishing tool. The open plied design retains abrasive compounds well and supports both cutting and coloring stages, making it suitable for industrial metal polishing and surface refinement applications.

Koyo-Sha Open Double Cloth Bias Sisal Buff Disc

The Open Double Cloth Bias Sisal Buff Disc from Koyo-Sha offers medium-level cutting and polishing, combining the strength of sisal with the flexibility of cotton bias cloth. Optimized for flat and contoured surfaces, it cools efficiently and provides even compound distribution for quality surface finishes.

Features

Open Double Cloth Construction

Two layers of cloth (cotton) sandwiching bias-cut sisal cloth, with an “open” pleating (irregular waves). This allows better conformity to uneven surfaces compared to tightly pleated or flat discs.

Bias-Cut Sisal Cloth

Sisal cloth is cut on the bias (diagonally) before layering, which improves flexibility, reduces fraying, and gives better cooling due to non-aligned fibres.

Moderate Hardness with Mixed Treatment

Uses both treated & untreated cloth. The treated parts help with cutting/performance, untreated parts help preserve finish and reduce heat buildup. Gives balanced cut + finish.

Open Pleat / Irregular Waves

Instead of regular wave pleats, has more irregular wave structure. This helps the disc adapt to surfaces that are not flat, reducing gaps and ensuring more contact.

Thickness ~17 mm

The disc has a substantial thickness (~17 mm) enabling durability and ability to maintain shape under load. Needs matching flanges (sold separately).

Overview

Specification	Detail
Product Name	Koyo-Sha Open Double Cloth Bias Sisal Buff Disc
Material	Bias-cut sisal cloth + cotton cloth layers (double cloth)
Pleat Type	Open pleats — irregular wave style
Treated / Untreated	Mixed: both treated and untreated cloth sections
Thickness	Approx. 17 mm
Use with	Special flanges (sold separately)
Suitability / Applications	All-purpose sisal buff; uniform polishing of wide surfaces; conformity to irregular surfaces; for steel, stainless steel, aluminium and similar metals.
Hardness	Moderate