In my experience, form boards are used for the layout and construction of electrical wiring harnesses. Locations are identified on the board for connectors, wire harness branch points, installations markers, and possibly sensors, switches, terminal blocks, or other wire-terminating devices. Wires are laid along a route identified on the form board, and tied together at places identified. The finished wire bundle may be left on the form board until use, or it may be coiled up and bagged for storage until it is needed.
Such a form board is typically a piece of plywood with pegs or pins in it at specific locations. It may be painted or printed with information showing the desired layout, or it may have a plastic overlay for that purpose.
A complex assembly may require construction of hundreds (or thousands) of form boards, some with many variations to accommodate particular customer needs or engineering changes.
I can imagine that form boards may be used for construction of tubing or plumbing assemblies, or anything else where it is useful to create an assembly or subassembly from things laid or formed into a particular pattern.
Such a form board is typically a piece of plywood with pegs or pins in it at specific locations. It may be painted or printed with information showing the desired layout, or it may have a plastic overlay for that purpose.
A complex assembly may require construction of hundreds (or thousands) of form boards, some with many variations to accommodate particular customer needs or engineering changes.
I can imagine that form boards may be used for construction of tubing or plumbing assemblies, or anything else where it is useful to create an assembly or subassembly from things laid or formed into a particular pattern.