The plasterer? at this time cast all their ornaments in plaster of Paris, whereas originally they were performed by hand, ... When it is finished and got somewhat ~firm, it is oiled all over, and put into a wooden frame, which it is adapted to fit into ;anbsp;...
|Title||:||The Circle of the Mechanical Arts; Containing Practical Treatises on the Various Manual Arts, Trades, and Manufactures. 2. Ed. -London, Rees 1815|