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The jointing of veneers is carried out in order to provide square, straight edges. So that two or more veneer sheets can be taped or spliced to form a wider sheet with inconspicuous glue joints.
The two types of veneer jointers in common use today are
Both employ rotating, multiple-knife cutter heads.
Many of the difficulties attributed to faulty jointing are really due to lack of moisture control during storage or handling of veneers. Jointed veneers cannot retain straight square edges or give tight glue joints if their moisture content is allowed to increase or decrease excessively prior to gluing.