has been removed it is placed on a special stand 31 with its long leg lying on a steeply inclined surface 32 and its short leg on an only slightly inclined surface 33 in both cases the simulated brick is formed of a resin mixed with sufficient limestone filler to give a dull clay like appearance and also mixed with a color in the case of a simulated brick which is to have an antique appearance while the brick is on the stand 21 in the case of the brick 10 and the stand 31 in the case of the brick 28 it is subjected to burning with a blow torch or the like which acts to give a slightly black or tinged appearance this antique appearance may also be accomplished by using a black spray paint and just passing it lightly so that certain points of the brick are high lighted by the paint in the case of the mastic 20 a suitable formula for forming about 80 gallons of mastic is as follows 22 gallons of dupont 34 elvacet 1440 34 which is a polyvinyl acetate copolymer emulsion 200 lbs of an 34 o 34 sand this is a very fine dry sand the plastic used in the brick is a polyester manufactured by reichold chemical inc under the trade name of 34 polylite 34 and it is used with a catalyst known as 34 mek 60 34 which is methyl ethyl ketone a plasticizer of dibutyl phthylate is used the coloring material is selected from those known as 34 earth 34 colors such a coloring material is iron oxide red in order to fireproof the brick antimony oxide may be used in the case of the mold the elastomer is polyvinyl chloride as manufactured by b f.