The growing adoption of digital fabrication technologies in localized production environments, such as Fab Labs (Fabrication Laboratories), presents opportunities for sustainable manufacturing practices. However, the integration of repairability principles into digital fabrication processes remains a challenge. This research develops a framework that combines Design for Repairability (DfR) principles with the Lean Six Sigma DMAIC (Define, Measure, Analyze, Improve, Control) methodology to optimize designs for enhanced repairability in digital fabrication. Focusing on additive and subtractive manufacturing technologies at a local Fab Lab, the study follows the DMAIC approach to define the problem of poor repairability, measure key metrics, analyze root causes, improve the design process, and control implementation. The framework leverages digital tools to identify potential failure points and optimize part geometry. Case studies are conducted to validate the framework and quantify the benefits in terms of reduced repair time, material savings, and extended product life. Results demonstrate significant improvements in repairability metrics, with repair time reduced by 37% and material waste decreased by 42% on average. This research contributes to the advancement of sustainable manufacturing by integrating DfR principles with Lean Six Sigma methodology in the context of digital fabrication.