Calculate what a dull knife costs you:
Used to calculate the savings from reduced changeover time, assuming a 20-minute savings per knife change with reversible knives.
1.4×
1.3×
2.0×
Default: a conservative value from experience. Many customers report a factor of 1.5–2.0×.
| Item | Unit price | Quantity | Total |
|---|---|---|---|
| New solid planer knives | €30.61 | 4 pcs | €122.44 |
| Regrinding | €5.82 | 52 × | €302.64 |
| Full cycle, solid planer knives | €425.08 |
| Item | Unit price | Quantity | Total |
|---|---|---|---|
| Initial set (carriers incl. knives) | €22.97 | 4 pcs | €91.88 |
| Replacement reversible knives, without carriers | €8.63 | 24 × | €207.12 |
| Full cycle, reversible knives | €299.00 |
Material savings — full cycle
€126.08
per cutterhead and full cycle, with the same number of cutting edges. Lower cost from the very first knife change.
Note on ongoing costs: €14.34
* Calculated using actual BARKE unit prices (2026). The stated tool life advantages (30–50%) are based on experience from customer surveys and internal comparative tests. Actual tool life is affected by wood species, feed speed, machine condition and cutting hardness. Assumed changeover time: 30 min for solid planer knives and 10 min for reversible knives. Your individual savings may vary.
- It takes time: 15–30 minutes per change
- It costs money: €5–€10 per knife for the sharpening service
- It costs productivity: The machine is idle
These hidden costs add up.
And this is exactly where BARKE comes in.
