Tolerance in laser cutting is the maximum permissible deviation of the manufactured part from the dimensions specified in the technical drawing.
Factors Affecting Tolerance
- Material thickness: As thickness increases, cutting tolerance also widens.
- Focal distance: Correct focus adjustment directly affects edge quality.
- Cutting speed: High speed causes low quality, low speed causes high heat input.
- Assist gas: The choice of oxygen, nitrogen or compressed air changes edge quality.
Practical Recommendations
Typically ±0.1 mm tolerance can be achieved in 1–3 mm sheet, ±0.2 mm in 4–8 mm, and ±0.3 mm in sheets above 10 mm.
