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A detailed buying guide: how to choose a pneumatic polisher.
This section covers pneumatic polishers — rotary and random orbital (dual-action) models with 75–180 mm backing pads for polishing paint, clear coat, fibreglass, stone and metal. They are used in car detailing, in paint shops to remove scratches and dust nibs after painting, and in restoring boat and furniture surfaces. An air polisher is light, does not overheat in long work and is safe in damp conditions, but it needs a high-output electric or petrol compressor.
A rotary polisher quickly removes deep scratches but needs experience, as it can overheat and burn through the paint. A dual-action (DA) polisher combines rotation and oscillation, leaves no holograms and is safer for beginners. Read what pneumatic tools are and how they work and how to choose a polisher.
A 75 mm pad suits small areas and spot repair, 125–150 mm suits main body polishing, and 180 mm suits large flat surfaces. Check the spindle thread (M14 or 5/16") and hook-and-loop attachment, and choose foam, felt and wool pads by stage. See how to choose a polishing disc.
Rotary air polishers usually run at 1500–2500 rpm, while dual-action models run faster with an 8–21 mm orbit. A smooth speed regulator lets you spread compound at low speed and polish without overheating the paint. Read polisher speed control and how to choose it.
Polishers consume about 250–450 l/min and run long and continuously, which makes them among the most demanding air tools. Choose a compressor whose real delivery exceeds this consumption by about 30–50 %, with a tank of sufficient size. Read how to choose an air compressor and how to calculate compressor air delivery.
The rated pressure is 6.2–6.3 bar and should be measured at the tool, as pressure drops noticeably in a long, narrow hose. The tools have a 1/4" inlet for a EURO, ORION or RAPID coupler, and a hose with an 8–10 mm inner diameter is preferred. See how to choose compressor working pressure and how to choose an air hose and quick couplers.
When working on paint, the air must be dry and clean, so fit a filter-water separator and regulator. Do not feed oil through a shared line also used for painting; instead put a few drops directly into the tool inlet and run it away from the surface. Read how to prepare compressed air: condensate, filters, regulators, and lubricators.
Choose a light model (about 1–2 kg) with a side or D-handle and rear exhaust that does not blow dust and compound onto the surface. A balanced mechanism reduces vibration, but ear protection is needed for long work. See what is vibration level and how to choose hearing protection.
Start the polisher only with the pad resting on the surface so the compound does not spatter, and disconnect the air when changing pads. Backing pads, vanes, bearings and seals are replaceable parts. Read how to use pneumatic tools safely and how to choose spare parts for pneumatic and hydraulic tools.
At ToolsArmenia you can compare pneumatic polishers by type, pad diameter, speed, air consumption and weight and choose the right model for your detailing and polishing work.
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