Excerpt from Permodello Modeling: A Handbook in the Use of "Permodello, " the Permanent Modeling ClayThe tin can in which Permodello is packed should never be left open, and if it is necessary for the worker to leave his task before the model ing is completed, a damp cloth should always be laid over the work, to prevent the evaporation which results from undue exposure to the air.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.