What Is a Sander?
A sander is a power tool that uses a motor to sand surfaces through a rotating motion. Most sanders operate with an eccentric rotation, meaning the center of rotation is offset, allowing for more effective and wider area polishing.
Using a sander often generates dust, and many models come equipped with a dust collection bag for convenience.
Uses of Sanders
Sanders are widely used in construction, production, and increasingly in DIY projects. Their primary use is to smooth the surfaces of various materials. They are particularly effective for:
- Removing burrs from cut wood
- Eliminating rust from metal surfaces
- Cleaning deteriorated paint from surfaces
- Chamfering metal materials
For extensive surface treatment or small areas, sandpaper may be used, but sanders provide a more uniform finish.
Principle of Sanders
There are two main types of sanders: those using circular abrasive discs for grinding, and orbital sanders that use sandpaper or cloth files. Orbital sanders, with their elliptical sanding motion, are particularly suited for flat surfaces. Worn-out sandpaper can be easily replaced, and these sanders can be adapted for a range of tasks including glazing and waxing wood surfaces.
How to Choose Sanders
The market offers various types of electric sanders, each suited for specific tasks. Orbital sanders are versatile but less abrasive, while random orbital sanders offer higher efficiency but at a higher cost. When choosing a sander, consider the intended use, the need for dust collection, and the compatibility of sanding paper.
Additional Information on Sanders
1. How to Use Sanders
Proper use of sanders is crucial for safety and effectiveness:
- Cut the sandpaper to fit the sander’s pad size.
- Secure the sandpaper under the pad with the lever lock.
- Ensure the sandpaper is taut and without slack.
- For flat surfaces, keep the entire pad in contact and move the sander back and forth.
Always wear protective gear such as work gloves and safety goggles to prevent injury.
Origin of the Name “Sanders”
The term “sanders” likely originates from its function in sanding or polishing surfaces. However, the exact origin is uncertain. Sanders are sometimes interchangeably referred to as “grinders,” especially when disc grinders are involved.