Crisol

Abstract

I use the spatulas to practice a groove that communicates the space left by the model with The one that occupied the lingo. The groove must have a profile and depth sufficient to Allowing the passage of a flowing flow as equal as possible to that of the sprue. Surfaces must be thinned Of the groove neatly, to avoid turbulence and landslides to the passage of the metal. Having communicated the lingo with the space of the model in the base of the mold, step to the Cover, which lay. Lying down identify what will be the upper parts of the cavity of the Model, where air and vapors trapped by incoming material would accumulate, if not Practicing the gas outlets. With the lid in the upside down position the high points Come to be the lowest points, where, to pour some liquid, it would run to make puddles. The example model gives me the opportunity to point out one important observation: some models In their geometry high points of complex form, that require several outputs of Gases to avoid any bubbles.