Polishing cloths

Identity and construction

Buehler’s MicroCloth has soft long-nap rayon on cotton backing and lists 5–0.02 µm diamond, alumina or silica. ChemoMet has a porous polyurethane face and lists 1–0.02 µm alumina or silica. Buehler cloth descriptions and selection table Cloth texture and separately applied abrasive both affect specimen preparation. Buehler polishing guide, pp. 2–4

Woven cloth, pressed nonwoven and porous polymer are distinct working faces. The mounting system and abrasive dispersion are separate choices. Buehler product descriptions

Three physical parts have different roles. The working face contacts the specimen. A backing or mounting system attaches the consumable to its support. The added suspension or paste supplies abrasive particles. This separation is explanatory synthesis of the supplier descriptions and ordering tables. A mounting adhesive is not evidence of an abrasive binder in the working face. Buehler guide, pp. 3–6 and 15; Allied Chem-Pol

Exact-product comparison

The following is a selected comparison, not a cross-brand equivalence table. Particle values reproduce supplier guidance for added abrasive. They are not cloth pore sizes, nap heights, measured particle distributions, or resulting roughness.

The Struers table also identifies MD-Mol APS for automatic preparation systems. Its MD-Chem NonStick entry is intended for large specimens. These names remain separate variants. The guide does not identify the impregnant in its nonwoven MD-Pan and DP-Pan products, so "impregnated" alone does not establish permanently fixed abrasive. Struers guide, p. 2

Backing, mounting, and size basis

Buehler's table lists TexMet C, MicroCloth, and ChemoMet in pressure-sensitive adhesive, or PSA, and magnetic-backed forms. Each has nominal 8, 10, and 12 in options, displayed as 203, 254, and 305 mm. The respective pack quantities are ten PSA discs and five magnetic discs. Buehler selection table

Allied distinguishes adhesive, flexible magnetic-system, and rigid magnetic-system Chem-Pol discs. Adhesive sizes are 2-7/8, 8, 10, 12, and 14 in. Flexible versions are 8, 10, and 12 in; rigid versions add 14 in. All listed packs contain five. For example, 180-10058, 180-10558, and 180-10758 are the three different 10 in constructions. The page supplies no quantitative backing stiffness. Allied complete ordering table

Struers identifies MD-Chem item 40500093 as nominal 250 mm, displayed as 10 in, in packs of five, for magnetic fixation on MD-Disc. This is a named mounting system, not a promise of fit on every magnetic platen. Struers exact product page

Dimensional synthesis. Ten inches converts to 254 mm using 25.4 mm per inch. A supplier's 250 mm disc and another supplier's 254 mm disc can therefore share a nominal "10 in" label without identical metric dimensions. These pages provide no diameter tolerances or total-stack drawings. Pack count, nominal diameter, and working-face construction answer different questions.

Nap, abrasive size, and preparation outcome

For a fibrous cloth, nap describes its raised fiber layer. Buehler illustrates abrasive resting on a napless face versus penetrating a napped face. Its discussion associates harder napless cloths with more aggressive polishing and softer napped cloths with less aggressive removal. These are qualitative relationships within its preparation guidance, not calibrated hardness or compressibility measurements. Buehler guide, p. 4

Measurement synthesis. A micrometre, µm, is a length unit. Particle diameter, nap height, pore diameter, and roughness may all use length units while describing different quantities. A 1 µm abrasive recommendation does not establish 1 µm roughness. "Soft," "low nap," and "dense" provide no numerical test method, load, conditioning state, or uncertainty in the compared sources. No numerical conversion between these descriptions follows.

The sources do not fully agree. Buehler's guide places Nylon in its coarse group on p. 5 but in the intermediate ordering group on p. 15. The current webpage puts Nylon in its coarse narrative and intermediate table. The guide gives PoliCloth diamond guidance of 6–1 µm; the webpage gives 9–1 µm. The guide's ChemoMet illustration includes diamond as well as alumina and silica, whereas the webpage table lists only alumina and silica. These differences remain source-specific; they do not prove a formulation change. Buehler guide, pp. 5 and 15; Buehler webpage

Buehler defines relief as harder constituents standing above a softer matrix and describes embedding as hard particles retained in softer material, cracks, or voids. It also discusses smearing. Its FAQ warns that mixing abrasive sizes on one cloth can scratch a specimen. Buehler guide, pp. 10–11

Applicability synthesis. Relief, edge rounding, pull-out, smearing, and retained abrasive are distinct specimen outcomes. A cloth name, stage label, or compatible abrasive list does not establish their absence. Finish, flatness, and dimensional preservation require evidence for the actual specimen, cloth, abrasive, support, and preparation conditions. No production sequence or operating settings follow from this comparison.

Adjacent products and coverage limits

A slurry is the particle-bearing preparation liquid, distinct from the contact face receiving it. A diamond lapping film instead supplies diamond coated on polyester film, as in 3M 661X. Its supplied abrasive construction differs from the separately charged cloths above. Buehler guide, pp. 3 and 6; 3M 600X technical data, p. 1

Felt polishing wheels, abrasive sheets, and semiconductor chemical mechanical planarization, or CMP, pads fall outside this specimen-cloth comparison. Shared polishing terminology or a shared polymer does not establish interchangeability. The related felt-wheel reference and diamond-film reference address their own product forms.

No exact-product SDS, chemical-resistance test, or cleaning validation was evaluated here. Generic "chemically resistant" language supplies no solvent list, pH window, exposure duration, or adhesive compatibility. Neither an undisclosed formulation nor an SDS ingredient list would establish the complete textile construction or process recipe. The source set establishes no universal cleaning method, reuse life, contamination-free result, or customer capability.

Reviewed October 29, 2026 PDT. Buehler's downloaded guide bears ©2018 and identifier FN01465_Polishing_Application_Guide; its URL's 0216 is not treated as the document revision. Struers' two-page guide is marked 09.2015 / 40500063. The three-page 3M 600X technical data sheet is dated November 2023. The product webpages are undated retrieval snapshots. Historical guidance and current hosting do not establish current lot properties. No independent matched comparison, lot certificate, quantitative cloth-compliance test, or validated finish dataset was available in this source set.