. Guide leaflet. to a creamy consistency, is poured over thesurface to a depth of about one inch. Spraying the surface lightly withwater before pouring plaster will prevent bubbles; or brushing on thefirst coat of plaster will bring the same result. When the plaster is*^set, lift it from the clay and remove the leaf; ream out two or three 6 AMERICAN MUSEUM GUIDE LEAFLET keys on the margin of the mold and, after soaking thoroughly inwater, brush the whole surface with heavy soap water, a soft mixture ofstearine and kerosene or with lard oil to prevent sticking. Build a claydam about this and ag
. Guide leaflet. to a creamy consistency, is poured over thesurface to a depth of about one inch. Spraying the surface lightly withwater before pouring plaster will prevent bubbles; or brushing on thefirst coat of plaster will bring the same result. When the plaster is*^set, lift it from the clay and remove the leaf; ream out two or three 6 AMERICAN MUSEUM GUIDE LEAFLET keys on the margin of the mold and, after soaking thoroughly inwater, brush the whole surface with heavy soap water, a soft mixture ofstearine and kerosene or with lard oil to prevent sticking. Build a claydam about this and again flow with an inch of plaster. When this is set,you will have a two-piece mold with surfaces in perfect contact. Wherethe under side of a leaf will show in the Group, the leaf should be lefton the first mold and the second layer of plaster flowed over this. How-ever, the leaf is removed preferably where at all possible, because a thin-ner wax impression will result from molds with surfaces in perfect Molds mounted in a clamp. Materials used and successive stages in leaf making. It will be necessary to gouge out the plaster where the midrib occurs onthe half representing the back of the leaf, and in some cases the moreprominent lateral ribs should be accentuated by the same means. Where many leaves are to be made, the molds should be mounted inhinged clamps in perfect alignment. This will eliminate unnecessarywear and imperfect impressions. A plaster mold should stand aboutfifty impressions. Where a great number of leaves are to be made, itwill be found more satisfactory to use type-metal molds. (See Directionsfor Making Metal Molds.) h. Wire is used to support the leaf, and shouldbe cut into lengths about an inch longer than the leaf from tip to end of BVILDINV, THE MlSFAM (IROUP 7 petiole, and of sufficient size to sup|)()it tlie leaf without sa^^in;^;. Thewires should be tapered by tyin^; into bunches and dipping; into nitric;acid and draining alternately until t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
