Levelling Spacer Device for Laying Slab Products for Cladding Laying Surfaces, and a Computer Program Product

A computer program product comprising a non-transitory computer-readable storage medium and computer program code instructions encoded on the non-transitory computer-readable storage medium, that include a digital representation of a levelling spacer device for laying slab products for cladding laying surfaces, comprising:

• a support comprising a base, positionable on the backside of a laying surface of at least two slab products that are adjacent and flanked with respect to a flanking direction, and at least one separator element projecting from said base and configured and arranged to contact at least a portion of facing flanks of the at least two slab products when said support is positioned on the backside of said laying surface of the at least two slab products, said at least one separator element being provided with a through-window with an upper edge destined to be located superiorly of the level of an in-view surface of the at least two slab products and a lower edge destined to be located inferiorly of the level of said in-view surface of the at least two slab products;
• and
• a presser wedge configured and arranged to be inserted in the through-window and to slide restingly on the in-view surface of the at least two slab products, with an upper face cooperating with the upper edge of the through-window to push the at least two slab products towards the base of the support, wherein said upper face of the presser wedge comprises at least two adjacent areas running longitudinally along at least a portion of the length of the pressing wedge and that are tilted downwards towards each other along a common convergent axis, and wherein said upper edge comprises at least two upper tilted sub-edges, each configured and arranged to cooperate with a respective area of the at least two adjacent areas,
• wherein the program code instructions are configured, when run in a processor controlling the operation of a 3D printer, to make said 3D printer manufacture said levelling spacer device.