Head to head
Bona FlexiSand 1.9 vs Stihl TS 420
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine. The Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
Last reviewed 13 September 2026
Specifications side by side
| Bona FlexiSand 1.9 | Stihl TS 420 | |
|---|---|---|
| Power | 1.9kW | 3.20 kW |
| Weight | 50kg (plus optional 11kg magnetic weight) | 9.8 kg |
| Voltage | 230V, 50Hz, 11A | - |
| Disc diameter | 407mm (16in) | - |
| Displacement | - | 66.7 cm3 |
| Cutting wheel | - | 350 mm |
Sources: Bona FlexiSand 1.9, Stihl TS 420. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the FlexiSand 1.9 if...
A single-disc rotary sander used for buffing, screening and light sanding rather than heavy stock removal, which is why floor contractors keep one alongside a belt or drum sander rather than instead of one. Its 407mm disc and 1.9kW motor put it in the same bracket as other single-phase rotary buffers sold through UK flooring trade counters.
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Buy or hire the TS 420 if...
A hand-held petrol cut-off saw for cutting concrete, stone, kerbs and pipe. Used by groundworkers, utilities crews and landscapers on road and paving jobs.
Full TS 420 specifications →Common questions
What is the difference between the Bona FlexiSand 1.9 and the Stihl TS 420?
The Bona FlexiSand 1.9 is a single-disc rotary floor sanding and buffing machine; the Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
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