I suspect that the veneer is simply not flexible enough to form around the tight corners of the recess without splitting.
You might try steaming or boiling the veneer to soften it. This would probably require a glue that cures in the presence of moisture, similar to the 'Gorrilla Glue' original.
Veneering is not my thing, maybe a better answer will appear shortly.
We have a problem in MDF panel natural wood veneering.
We intend to natural wood veneering cabinet and CNC machined 3d panel (with MDF core). We tested it with 0.3mm back fleeced wood veneer and the following glue: http://www.glue4u.com/index.php/data-sheets/tds-a-msds/jowat/436-150-90-tds
We also use membrane hot press machine without vacuum capability. Unfortunately it didn’t work correctly. The wood veneer didn’t form well, especially in the concave area. You can see the final result of our failed test in the following link:
Can someone help me? Should I change the type of veneer or glue? Do you have any idea?
Thank you in advance.