The pattern has been dusted with parting dust and the sprue (right) and vents (center and left) are placed by hand. The sprue is the passage that the molten aluminum will be poured through and the vents allow air to escape out of the mold as well as providing a reservoir of metal that can help to fill the cavities as the aluminum cools and shrinks. After the sprue and vents are held in place by the greensand collars will be placed on the vents to make a larger reservoir.
Previous Picture
10
of 52 
Next Picture
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 26A 26B
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
42 43 44 45 46 47 48 49 50 51 52
Return to First Page of This Set