The present invention relates to a manufacturing method of the master motel to make the overall shape as the drawing designed for the development of new cars, by using a plywood to make a cross-sectional shape at a predetermined interval (about 200mm) bonded to each other and wrapped around the outer plywood Working to produce a skeleton; Attaching a styrofoam 110 of a predetermined thickness over the framework; A primary molding step of transversely attaching the attached stirrer product 110 to the NC machine 200; Applying a resin on the rolled styrofoam 110 to a predetermined thickness; The master model is manufactured in the secondary molding step of processing the skin surface using the NC machine 200 in the shape of the programmed vehicle using the cured resin 120, and according to the development of the new car by reducing the amount of resin used and shortening the air. It is to reduce the cost.
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