forming a negative die half 50 see fig3 4 bearing an inverse relief image 52 of the raised design 14 whereby the depression on the negative die half 50 corresponds to the relief image and height thereof on the positive die referring now to fig3 and 4 illustrated are perspective views of a negative die half 50 only the lower and side surfaces of the negative die half 50 are shown for the ease of illustration although it will be understood that the negative die half 50 can and often will be thicker for use in pressing fig3 and 4 each show the inverse relief image 52 of the raised design 14 the corresponding positive die counterpart can be similarly machined alternately the positive die can be formed by taking an impression of the negative die for example a border may be installed surrounding the negative die and optionally a de mold release chemical such as stearic acid eviroshield or watershield brand release agents from zyvax inc of boca raton fla universal mold release u2122 from smooth on company of easton pa or other mold release agent is applied to the negative relief die a liquid casting material which is preferably acrylic or plaster based material known to the skilled artisan can then be introduced into the bordered negative die an exemplary liquid casting material is sold under the brand.