Sanders & Grinders
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Sanders and grinders: match the surface, removal rate and accessory
Sanding furniture, preparing a corner and grinding metal are not variations of the same job. Sanders and grinders use different movements and carry different risks. Decide whether you need surface finishing, material removal or approved polishing, and identify the surface involved. The right machine must accept the correct consumable and allow safe workpiece support and control of dust and flying debris.
Choose the motion for the surface
A random-orbit sander can suit broad surfaces and progressive finishing; a detail sander reaches corners with a smaller working area. A belt sander prioritises material removal and needs more care to avoid changing the workpiece's shape. A grinder is not a universal sander: it needs discs and guards specified for each operation.
- For polishing, check that both machine and accessory are approved for it and that the speed range is appropriate.
Dimensions and speeds must agree
For sanding consumables, check format, fastening and extraction-hole layout. On a grinder, verify permitted disc diameter, thickness, mounting and type. The accessory's speed rating must accommodate the machine's speed according to its documentation. Do not improvise adapters or apply side pressure with a cutting disc that is not designed for that use.
Dust and consumables affect ownership cost
Abrasive availability matters if you need several grit grades. The material and intended finish determine the progression, rather than one sequence for everything. An integrated bag does not necessarily provide suitable extraction for every dust. Check the connection and capability of the extraction system; old coatings and unidentified materials require assessment before sanding.
Control, maintenance and jobs to decline
Compare grip, weight and switch access in your actual working position. A larger model may remove material quickly but be harder to handle at edges or in small spaces. Check replacement backing pads, brushes where applicable and other spares. Clean vents and replace consumables with power disconnected.
Keep specified guards and handles fitted, clamp the workpiece and use suitable eye, hearing and respiratory protection. For flying fragments, add the specified face protection without replacing eye protection. Keep flammable materials away from possible sparks. Do not work on structural elements or suspect materials without qualified assessment; a compatible accessory does not establish that the job is appropriate for home DIY.