Mixed Reality Fabrication challenges the conventional focus on automationand precision in digital fabrication, instead advocating for approachesthat bridge the gap between digital design and the wide tolerances,improvisation and non-uniform materials common to traditional craftpractices. This book promotes a humanist philosophy of technology, emphasizing the valueof human labour, craft traditions, and local adaptation while revealingopportunities for reduced documentation complexity, acceleratedknowledge transfer, waste reduction, and increased design freedom.Making by hand in mixed reality opens up a broad space of designscharacterized by stochasticity, formed curves, networks and field conditionsthat would otherwise be impractical to draw and build. Several case-study projects from the scale of sculptural pieces to smallpavilions illustrate how working within immersive mixed realityenvironments can empower skilled craftspeople to realize complex digitaldesigns through subjective interpretation of simple digital models, anddemonstrates the potential of mixed reality to reshape the relationshipbetween designing and making.