Systems and methods to design part weld processes are disclosed. An example system to generate weld instructions for display to a weld operator during a welding sequence includes: a processor and machine readable instructions which cause the processor to: provide an interface to define a weld program including a sequence of weld instructions for display to a weld operator during a weld sequence, the weld program including a plurality of properties; determine, for each of the weld instructions, respective values for one or more properties that are defined via the interface; and generate the weld program including the sequence of weld instructions by, for each of the weld instructions in the sequence of weld instructions: determining default values for the properties that have not been defined for the weld instruction,; and generating a visual representation of the weld instruction using the defined values and using the determined default values.