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DESIGN       43
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          is  set per material, and  the part's  cost is  that base  price   containing six-view photographs for each part, the minimum
          multiplied by the computed volume.                 board size required to cut each part, and the estimated
            Each aligned object is photographed from six directions;   material cost per part.
          because  other  objects  would otherwise  obstruct  the  shot,   Using the exported blueprint, the parts were ordered
          every object except the current target is temporarily hidden   through the wood custom-cut service. The ordering process
          before each capture, and  the on-screen dimension label  is   relied exclusively on the dimensions provided in the blueprint;

          rotated to face the camera so that dimensions remain legible   no additional measurements or design adjustments were
          from any direction.                                made at this stage.
            The captured images, required material dimensions, and   Once the cut wood parts arrived, they were assembled
          cost are then laid out across two PDF pages per object.  into a physical chair using nails and adhesive—the closest
                                                             physical equivalents to the FixedJoint connections used in VR.
          From Virtual Design to Real Chair                     The chair designed in VR was successfully reproduced
          To evaluate the reproduction-support functions, one of the   in  the  physical  world.  The  physical  assembly  corresponded
          authors built a chair using the proposed system, exported its   visually and structurally to the virtual design, demonstrating
          blueprint, ordered the required parts through a wood custom-  that the blueprint provided sufficient information to procure

          cut  service  using  the  exported dimensions,  and  assembled   the necessary materials and assemble the intended object.
          the delivered parts.                                  The blueprint's estimated total material cost was ¥15,254,
            The resulting physical chair was then compared against   compared with the actual order cost of ¥16,490—a difference
          the in-VR design. This trial was deliberately designed as a   of ¥1,236, representing approximately 7.5 percent of the
          proof-of-concept study rather than a controlled experiment   actual cost.
          with multiple participants or conditions.             This difference is attributable to two factors. First, the
            The research question at this stage is one of feasibility—  cost calculation is based on an approximation of wood

          whether the proposed reproduction-support functions can   volume  that  does not  fully account for the  specific  cutting
          bridge the virtual and the physical at all—rather than one of   and machining fees charged by the service; the calculated
          relative performance or user preference.           cost used a simplified volume-based formula that did not
            Accordingly, usability testing with general users and   include processing fees such as edge finishing or additional
          comparative evaluation against existing design and DIY   cutting complexity.
          tools lie outside the scope of this study and are identified   Second, the actual ordering service charges for machining
          as future work.
            The author used the system's object generation, cutting,
          and joining functions to construct a chair entirely within the                                      www.magnific.com

          VR environment. The design incorporated multiple parts of
          varying sizes and shapes, assembled into a functional seating
          structure. After completing the VR design, the part-alignment
          function was activated.
            The system automatically disassembled the chair into
          its constituent parts, arranged them in descending order of
          volume with dimensions labelled, and exported a PDF blueprint
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