Grinders

Grinders and sandersare widely used for finishing works. For example, they are used to remove old paint from the body, eliminate small scratches on a fresh coating, flatten the welds and make the surface of the parts smooth. Depending on the work that needs to be done, the tool is fitted with specific replacement pads and heads.

Types of grinders and sanders

• Disc sanders. They are characterised by a low level of vibration, they are light and compact. A working part is a disc which is fitted with pads made from different materials. Abrasive ones are needed for rough grinding and soft (fur, fleece, foam, felt) for polishing the lacquer or paint. There are also eccentric devices. They have a rotary disc that makes oscillatory motions, which impact positively on the quality of the processing.
• Belt sanders. These are characterised by a high performance, they help to polish large areas in a short amount of time. They function due to the sanding belt mounted on several pulleys. These tools are used to grind flat surfaces.
• Orbital sanders. They are fitted with a rectangular or triangular base, and using clamps or a hook-and-loop system, abrasive material is attached to it. The treatment is carried out by the working part moving back and forth.
• Angle grinder. The grinding wheel is at the right angles to the body. With the help of these instruments it is convenient to grind items with narrow recesses. Besides, these tools can be fitted with different heads: wire brushes for removing dirt from a part, and a cutting wheel for cutting metal etc.

Tools can be air-powered or electric. The first ones are connected to a compressor, are lightweight and have a relatively low price. Besides, they almost don’t get heated while in use and are suitable for working with wet surfaces. Tools of the second type weigh more and are prone to overheating when working continuously, but they do not require any additional equipment.

Grinder and sander maintenance tips

1. Use the items according to the manufacturer's instructions and do not forget about safety measures. In particular, you should wear protective goggles.
2. When working with plastic, switch on the grinder or sander to the minimum speed. It can’t withstand high temperatures that occur due to the excessive friction.
3. Do not push on the body while using the item. Otherwise, it is possible to damage the coating you’re treating.
4. Always make sure that the replacement heads are securely set.
5. Timely remove discharged particles of the material from the spare. Empty the dust bag regularly if there is any.

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