Finger jointing lines can be categorized according to various aspects:

Technical design according to end product:

• Depending on the alignment of the zinc (Zn) in the completed finger-jointed lamella, the following can be distinguished flat finger-jointing line and systems for upright finger jointing. The terms refer to the position of the workpieces in the milling machine. However, many systems are suitable for both variants.
• Depending on the length and use of the end product, a distinction can be made between long-wood finger jointing line (from approx. 12 m lamella length) for timber and short timber lines (usually up to 6 m lamella length) for furniture panels and window scantlings.

Technical design according to technical type:

• System consisting of single machines: All components of the system are individual machines. The transport of the workpieces between the machines is not automated.
• Compact type: All components of the system are integrated into one machine, which mills, glues and presses the individual joints cyclically. Compact systems systems are primarily used for the production of lumber with large cross-sections and long length; they would be too slow for other applications.
• Package system: The milling machine is decisive for the designation here. The individual pieces of wood are combined into packages and an entire package is milled in one cycle. Either the table with the workpieces can be moved past the hogger and milling unit or the workpiece package is firmly clamped and the entire support with hogger and milling machine moves.
• Single board line: Here too, the milling machine is decisive for the designation. This type of system is basically only application for flat galvanizing. The workpieces are fed individually through interlinked single-sided profiling machine and processed in the process. The workpiece pass-through device extends over the entire processing length. There is a zone between the two roll profiling machine in which the workpieces are transported from one side to the other. The highest production capacity can be achieved with this type of system at corresponding feedrate.