Adze-Carved Wood Surface in Rhino for CNC Machining

I need a single solid surface in Rhino (.3dm format) that replicates the appearance of adze-carved wood. The file will be used for CNC machining purposes, so precision is key.

Requirements:
- Size: 50 cm x 50 cm
- Dent width: approximately 0.5-1.5 cm (not depth) – high accuracy required
- Tolerance must adhere to DIN ISO 2768 fH standards
- No wood texture required, just the chiseling shape

Ideal Skills & Experience:
- Proficient in Rhino (any version)
- Expertise in creating surfaces suited for CNC machining
- Knowledge and experience in organic surface modeling