The blanks or raw friezes for the production of parquet are often bought in the trade. When they arrive at the factory, they usually do not have right-angled ends. Early in the production process of two- and three-layer parquet or also mosaic parquet the blanks are therefore cut at right angles.
Multilayer parquet
If it is desired that the blanks pass through the subsequent flow process without any gaps between them, the ends are already cut in the first step. If the blanks maintain a distance to each other when passing through the line, this step can be omitted. After planing at the latest, the ends of the blanks are cut at right angles. After this processing step the blanks have a precise cuboid shape with defined dimensions (width/height/length).
A double crosscut saw is used to cut both sides at a constant distance. The blank is guided across the machine, which processes both ends simultaneously. The principle corresponds to that of a simple double-end tenoner; in some cases, corresponding machines are also referred to as such. To prevent the wood from tearing out, two saw blades are often used to saw from the top and bottom side at the same time.
In the case of varying lengths, as is the case in the production of three-layer parquet, only one side is cut at a time with a machine working on one side. Alternatively, a crosscut saw can be used, which the blanks pass in longitudinal direction.
Mosaic Parquet
With a multi-blade saw, the blanks are cut crosswise into blocks that already have the length of the finished parquet lamellas. The blanks have a length of up to one meter, typical finished lamellas are 160 mm long. By cutting them into several pieces, even blanks with a curvature can be processed. In this way the wood yield is optimised.