Sander Category

Sander Power Tool Frequently Asked Questions

What is the difference between an orbital sander and a random orbital sander?

A standard orbital sander moves in small circular patterns and uses square sheets, making it ideal for getting into corners. A random orbital sander rotates while simultaneously oscillating in an elliptical manner, which prevents swirl marks and provides a much smoother finish on flat surfaces.

Which sandpaper grit should I start with for woodworking projects?

The starting grit depends on the wood's condition; for rough-cut lumber or removing old paint, start with 60 or 80 grit. For general smoothing of relatively flat surfaces, 120 grit is the standard starting point before progressing to finer grits like 180 and 220.

Do I need to apply pressure while using a power sander?

No, you should let the weight of the sander and the speed of the motor do the work. Applying excessive downward pressure can slow the motor, cause uneven sanding, lead to premature motor wear, and create unsightly "pigtail" swirl marks on the wood surface.

Can I use a belt sander for fine finishing work?

Belt sanders are aggressive tools designed for rapid material removal and leveling large, flat areas. They are generally too powerful for fine finishing; it is best to use a belt sander for the initial stage and switch to a random orbital or finish sander for the final smoothing steps.

How often should I change the sandpaper on my power tool?

You should change the sandpaper as soon as you notice a buildup of wood dust (clogging) or when the abrasive feels smooth to the touch. Using worn sandpaper generates heat rather than cutting wood, which can burn the workpiece and damage the hook-and-loop sanding pad.