What is the difference between random orbit and orbital sanders?

A random orbit base spins as well as oscillates; that random path leaves no swirl marks and suits the final surface before paint. An orbital sander only oscillates — it reaches corners but can leave a pattern.

Which grit should I start with?

It depends on the surface: 60-80 on old paint or rough timber, 120 on sound timber. Then 150 and finish at 180-240; skipping steps leaves earlier scratches.

Is dust extraction necessary?

Yes. It stops the abrasive clogging early, so paper lasts longer, and it keeps timber and filler dust out of the air you breathe.

Why does the abrasive clog so quickly?

Usually the surface is damp, the paint is not fully cured, or extraction is not working. On hook-and-loop bases, misaligned holes also cut extraction directly.

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Sanders

Sanders prepare surfaces; which one suits depends on the area and the finish you need. The catalogue holds 34 models.

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Machine types and grit

A random orbit sander both spins and oscillates, leaving no pattern — the standard choice for timber and filler before paint. Orbital (delta or rectangular base) sanders reach corners. Belt sanders remove material fastest and are for rough levelling.

Grit runs coarse to fine, and the work is usually done in three steps: 60-80 to level, 120-150 in between, 180-240 before paint. Skipping a step leaves the previous scratches visible.

Random orbit: broad flat surfaces, swirl-free finish.
Orbital/delta: corners and tight areas.
Belt: rough levelling, fast stock removal.
Dust extraction: for finish quality and for your lungs.

Frequently Asked Questions

What is the difference between random orbit and orbital sanders?
A random orbit base spins as well as oscillates; that random path leaves no swirl marks and suits the final surface before paint. An orbital sander only oscillates — it reaches corners but can leave a pattern.
Which grit should I start with?
It depends on the surface: 60-80 on old paint or rough timber, 120 on sound timber. Then 150 and finish at 180-240; skipping steps leaves earlier scratches.
Is dust extraction necessary?
Yes. It stops the abrasive clogging early, so paper lasts longer, and it keeps timber and filler dust out of the air you breathe.
Why does the abrasive clog so quickly?
Usually the surface is damp, the paint is not fully cured, or extraction is not working. On hook-and-loop bases, misaligned holes also cut extraction directly.