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Orbital, Belt and Random Orbit Sanders Compared
Quick answer: A belt sander removes material fast on large flat surfaces (levelling boards, removing old paint) but can gouge if held still. A sheet (finishing) orbital sander is gentle and cheap for final smoothing and corners. A random orbit sander combines spinning and orbiting for a fast, swirl-free finish, so it is the best all-rounder. Many workshops own a belt sander for heavy work and a random orbit sander for finishing. H-TECH sanders from KSh 6,990.
Key facts
- Belt = fastest removal
- Orbital = gentle finishing
- Random orbit = best all-rounder
- Work up through grits
On this page
Sanders Compared
| Belt sander | Sheet orbital | Random orbit | |
|---|---|---|---|
| Motion | Continuous belt | Small orbits | Orbit + rotation |
| Speed of removal | Very fast | Slow | Medium–fast |
| Finish | Coarse; needs finishing | Smooth; can leave tiny swirls | Smooth, swirl-free |
| Corners | No | Yes (square pad) | No (round pad) |
| Best for | Levelling, stripping, doors, tabletops | Final finish, cabinets, between coats | Furniture, doors, general finishing |
Sanders at H-TECH
GBS 75 AE PROFESSIONAL BELT SANDERKSh 43,440
Bosch GSS 140 Orbital Sander Professional 220WKSh 6,990
Bosch Orbital Sander GSS 2300KSh 12,700
GEX 40-150 PROFESSIONAL RANDOM ORBIT SANDERKSh 40,200
BOSCH GPO 950 POLISHERKSh 21,370| Product | Price |
|---|---|
| GBS 75 AE PROFESSIONAL BELT SANDER | KSh 43,440 |
| Bosch GSS 140 Orbital Sander Professional 220W | KSh 6,990 |
| Bosch Orbital Sander GSS 2300 | KSh 12,700 |
| GEX 40-150 PROFESSIONAL RANDOM ORBIT SANDER | KSh 40,200 |
| BOSCH GPO 950 POLISHER | KSh 21,370 |
Current listed prices incl. VAT (updated 10 November 2026).
Sandpaper Grits
| Grit | Use |
|---|---|
| 40–60 | Heavy removal, old paint |
| 80–120 | Shaping and smoothing |
| 150–180 | Before painting or varnish |
| 220+ | Between coats, final finish |
Tips for a Good Finish
- Work up through grits without skipping more than one step.
- Keep the sander moving and flat; let its weight do the work.
- Use dust extraction or a vacuum; dust spoils finishes and lungs.
- For metal finishing, see how to polish stainless steel.
Keep tools running: replacing carbon brushes.
Safety: wear a dust mask, eye and hearing protection; unplug before changing paper or belts.
Watch: Fabrication and components
Frequently asked questions
What is the difference between an orbital sander and a random orbit sander?
A sheet orbital moves in small orbits only; a random orbit sander also rotates, giving a faster, swirl-free finish.
Which sander is best for furniture?
A random orbit sander for most surfaces, with a sheet orbital for corners.
When should I use a belt sander?
For fast removal on large flat surfaces such as doors, tabletops and floors.
Which sander is best for beginners?
A random orbit sander: forgiving and versatile.
What grit should I start with?
Coarse (60–80) for rough surfaces, then work up to 120–180 before finishing.