The purpose of the present invention is to provide a spin jig for machining a lens deco. The spin jig for machining a lens deco according to the present invention comprises: a support body (10) having first vacuum holes (22) which penetrate to the top of a die unit (16) inside and second vacuum holes (24) outside; collets (20) which are placed at a location where an outer circumferential surface of a lens deco mounted on the die unit (16) is positioned; and a grip body (30) which is coupled to the support body (10) to be able to relatively move and which adjusts the collets (20) to be narrower towards the center of the support body (10) by descending by vacuum acting from the second vacuum holes (24).
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