Whether above the doors, on old frames or trumeaux, many moldings and rosettes were once made of plaster. Relatively fragile, subject, especially for frames, to frequent shocks, these decorations are quickly damaged. Do not panic in front of one of these golden frames with damaged molding: it is relatively easy to repair!
Step by step: Make an impression
1 Dust nests, moldings and various decorations must first be cleaned with a soft brush. 2 To achieve a perfect imprint of the molding, choose industrial plasticine like Plastiline, in the composition of which additives are used which give it its flexibility. 3 Knead the dough well in the palm of your hand to heat it, then locate in a healthy part of your room a pattern identical to the one you need to repair. 4 Using a brush, apply petroleum jelly or, failing that, cooking oil, over the molding of which you want to take the imprint. This precaution prevents the dough from "sticking" to the support and damaging the finest ornaments. 5 Place the dough on the oiled part and flatten it so that it matches all the shapes and details of the mold. 6 Carefully remove the dough, place it on a flat surface and, with two other dumplings, close the ends of your imprint. In this way, at the time of casting, the plaster to be molded cannot escape from the sides. 7 Prepare the plaster for modeling and pour it into the mold. So that it settles in all the interstices, even the smallest ones, do not forget to "vibrate" it, that is to say with the help of a screwdriver small blows on the wall of the mold. 8 Leave to set overnight before removing from the mold. 9 Adjust your molded part according to the chipped part of your frame. To make it fit perfectly, cut it with a saw, then lightly file it with fine sandpaper. 10 Brush the piece to get rid of any traces of dust, then glue the two surfaces with a wallpaper glue which, once dry, will not leave a trace. For heavy and wide moldings, choose a neoprene adhesive and carefully avoid drips. 11 Make the connections between the parts with a fluid slip, that is to say a little modeling plaster, diluted with 50% water. Brush this mixture and let it dry. 12 To find the original shade, mix methylated spirits with a tenth of its volume of white pad varnish. To this base, gently add the dyes necessary to obtain the correct shade. For the golden frames, use a liquid or paste gilding, all ready. Purists will get gold leaf and the right varnish for a brushing pose ... Long and delicate, but very spectacular!
Good to know
The Napoleon III frames are generally either gold or black ... You can also opt for color and, after painting the background in a light color, enhance all the small decorations. Know-how - home decor © La maison rustique - éditions Flammarion, 2006