• Edge polishing focuses on shaping and finishing part edges (removing burrs, smoothing profiles, creating mirror/gloss/satin finishes) to improve fit, safety, optics, and aesthetics.
• Scratch removal targets surface defects (scratches, scuffs, marring) on faces or edges and may require different abrasives, buffing, or chemical processes to restore surface appearance.
• Processes overlap: polishing often reduces minor scratches on edges, but deep scratches or face damage usually need dedicated repair steps (sanding, filling, re-polishing or recoating).
• Material and damage type determine the correct approach—acrylic typically polishes to near-optical clarity; polycarbonate may require specific compounds and care to avoid heat/crazing.

Yes — many scratches can be removed from polycarbonate, but success depends on scratch depth, location, and part function.

No — flame polishing polycarbonate is not recommended.

• Polycarbonate softens and can rapidly burn, bubble, or craze under open flame, causing optical distortion and weakening.

The best method depends on the material, edge geometry, starting condition, finish requirement, and production quantity. Diamond polishing is effective for many straight production edges, while hand buffing is better for curves, radii, and interior details. Test the process on the specified material grade before full production.

No. Flame polishing works best on a smooth, well-prepared edge. Deep saw marks, chips, and machining defects need mechanical preparation first. It is most commonly used on acrylic, while polycarbonate needs especially careful heat control.

Sanding leaves fine scratches that scatter light and create a frosted appearance. A controlled progression to finer abrasives, followed by an appropriate polishing method, can reduce visible scattering and improve clarity.

Yes. CNC-machined acrylic and polycarbonate can be polished when the machining process controls heat, tool marks, and internal stress. A clean machined edge needs less secondary preparation and supports a more consistent final finish.

Clear cast acrylic is commonly selected for high-clarity polished edges because of its machining and finishing behavior. Extruded acrylic can also be polished, but the final appearance depends on its grade, thickness, geometry, and process control.

Yes. Polycarbonate edges can be polished using suitable mechanical preparation and controlled polishing methods. Because polycarbonate is sensitive to excess heat and stress, material-specific settings and sample approval are important for visible or performance-critical parts.