When the log is sliced (see Plywood Slicing) the flinches are matched for color and grain. They are then glue-stitched together in different matching sequences to form a full sheet of veneer the different matching configurations of which create varied appearances and pricing.
Plywood Matching Techniques
There are five various techniques for creating the veneer patterns seen in plywood.
Adjacent veneer sheets are joined side by side, same sides up, for a uniform grain pattern.
One single piece of veneer is used, with continuous grain characteristics running across the sheet.
Medium Density Fiber Core
Veneers are matched by color or similarity, not necessarily by grain characteristics.
Every other piece of adjacent veneer is turned over, resulting in identical, but opposing patterns.
Veneers intentionally do not match at the joints, providing a casual effect.