Buying a Sander: You Probably Need Two, Not One
2026-09-05
"Sander" isn't really one category of tool — a random orbital sander, a belt sander, and a stationary spindle or disc sander solve different problems, and buying the wrong one first is a common early mistake.
Random orbital sanders: buy this one first
A random orbital sander moves its pad in a small, randomized orbit rather than a fixed circle, which is what lets it sand aggressively without leaving the swirl marks a fixed-orbit sander does. For finish sanding on furniture-scale work — the last step before finish goes on — this is the tool you reach for almost every time. If you only own one sander, it should be this one.
What to check: variable speed (lets you back off on softer woods or delicate veneer), a comfortable low-vibration grip for long sessions, and dust collection that actually connects to a vacuum rather than relying on the built-in bag, which catches a fraction of what a real vacuum does.
Belt sanders: for stock removal, not finishing
A belt sander runs a continuous abrasive loop at speed and removes material fast — genuinely fast, to the point that it's easy to gouge a low spot into a workpiece if you're not paying attention. It's the right tool for leveling glued-up panels, knocking down rough stock, or removing serious material quickly. It is not a finishing tool, and using one as your last sanding step will leave a surface a random orbital sander should have finished instead.
What to check: belt size (3"x21" is a common, versatile size), variable speed, and a flat, rigid platen — a soft or worn platen makes it much easier to sand a wave into your workpiece.
Where a spindle or stationary sander fits in
These handle curved edges and small parts that are awkward to hold against a handheld sander safely — think cabriole legs, curved aprons, or small parts you'd rather not hold near a spinning belt. Not a first purchase for most people, but a real gap-filler once you're doing regular curved work.
The actual buying order
Random orbital first, almost always. Add a belt sander once you're regularly doing your own stock prep instead of buying surfaced lumber. A stationary sander comes later, driven by a specific recurring need (curved parts, small components) rather than as a general-purpose tool.