Parts-In-Progress is a design methodology centered around assembly and disassembly, using standard dimensional lumber connected with custom digitally fabricated parts. The assemblies of this design experiment are at the scale of architectural components and furniture. These prototypes are constructed from the same set of materials with a range of connections and joints. Digitally fabricated parts are used as smart jigs that are tools for fabricating said assemblies and guide bolted connections. Standardization in joints between materials are designed as a range of possible connections around specific dimensional constraints. These variations in connections allow for unpredictable outcomes in their respective assemblies, making it possible to construct the most standard appearing assemblies to the most abnormal assemblies. The fabrication techniques of Parts-In-Progress requires minimal amounts of manipulations to stock materials, in order to preserve them for maximum reassembly possibilities or alternative reuse.