Formation of cracks
Cracks in the veneer due to water damage
Cracks forming due to the coat being too thick
Cracks forming in solid wood
Cracks forming on the MDF edge due to not enough material being applied
Web-shaped cracks forming due to old lacquer/hardener mixture
Cracks forming in the veneer - microtome cut
Cracks forming in the veneer - microtome cut
Crack in the MDF, processed without insulating primer
Description of the defect
Longitudinal cracks along the pores or web-shaped cracks spread over either part or all of the surface.
Cause of the defect
Longitudinal cracks along the pores, mostly cracks in the veneer due to:
- unsuitable veneer, for example multiplex or too much veneer
- veneer insufficiently bonded
- swelling of the veneer/shrink cracks
Web-shaped cracks, mostly cracks in the lacquer due to:
- too much lacquer applied, lacquer system too brittle
- with polyurethane lacquers: hardener forgotten
- lacquer/hardener mixture too old
cracks in the MDF edge
Defect solution
If the cause of cracks forming lies with the coating, sand the lacquer down to the raw wood and recoat with a suitable system, otherwise re-treat the object.