Common Problems
There are some problems encountered in the vacuum forming process. Absorbed moisture can expand, forming bubbles within the plastic's inner layers. This can be solved by drying the plastic for an extended period at high but sub-melting temperature. Webs can form around the mold, which is due to overheating the plastic and so must be carefully monitored. Webbing can also occur when a mold is too large or parts of the mold are too close together. Finally, objects that are formed often stick to the mold, which is remedied by using an angle of three degrees or more in the mold.
Read more about this topic: Vacuum Forming
Famous quotes containing the words common and/or problems:
“It is to be presumed, that a man of common sense, who does not desire to please, desires nothing at all; since he must know that he cannot obtain anything without it.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“Those great ideas which come to you in your sleep just before you awake in morning, those solutions to the world’s problems which, in the light of day, turn out to be duds of the puniest order, couldn’t they be put to some use, after all?”
—Robert Benchley (1889–1945)