What is the principle of veneer sawing?

A wood cutting method that uses a saw to cut thin wood along the grain direction of the wood section (or wood square). Sawing is the oldest method in veneer manufacturing. In 2400 BC, the Egyptians used saws to cut veneer to decorate palace furniture. Sawing to make veneers has low productivity and lower wood utilization rate. A large amount of high-quality wood turns into sawdust when sawed, resulting in serious waste. In the modern veneer and plywood industry, veneer sawing has been basically eliminated and replaced by rotary cutting and planing. Only under certain special requirements, such as extremely hard wood that cannot be used to make veneers by rotary cutting or planing, and needs to maintain its natural color and cannot be steamed, veneers with a thickness of more than 5 mm, and special features in the manufacture of musical instruments. The sawing method is only used when veneers with no cracks on the back and high cross-grain tensile strength are required. Sawing equipment mostly uses horizontal gang saws.

In order to obtain the required wood texture and improve the yield rate, different sectioning methods are used according to different diameters before sawing the veneer. The wood texture of sawn veneers is mostly radial section. When slicing the wood section, it is first cut into several radial sections, and then the wood is cut into veneers of required thickness.

The operation method of veneer sawing is similar to that of lumber making, but its accuracy requirements are much higher than that of lumber making. The process is as follows: log scribing and cross-cutting → wood section sectioning → wood square sawing.