Laser cutting is accurate, but the physical result can differ slightly from the digital drawing. The kerf has width, sheet thickness varies and thicker cuts can taper.
Where do dimensional differences come from?
- Kerf: the laser removes a narrow strip of material.
- Thickness: actual sheet thickness can differ from the nominal value.
- Material behaviour: heat and stress affect materials differently.
- Geometry: small holes, fine details and joints are more sensitive.
Choose a fit for the actual application
A press-fit, sliding fit or clearance fit depends on material, thickness, shape and purpose. One universal compensation value will not suit every design.
Make a small fit test
Draw several slot or hole sizes and produce them in the final material and thickness. Use the physical results to select the dimension before ordering a production run.
Test the complete construction
Assemble the trial as it will be used. Check fit without force and the joint's response to loading. A suitable slot is only one part of assessing a load-bearing or safety-critical construction.
Prepare the production file
Compare materials and use the drawing guidelines before ordering.