Cast Iron Skillet Construction

Used in

• Chapter 3 The Knife

The rows that check it

• 7 confirmed
• 1 amended
• 1 dropped
• 2 marked for safety

• K2 amended Safety Molten iron on a damp mould or a drop of water in the crucible turns to steam a thousand times its volume and throws the iron back; everything dry, leather, face shield, three …
• K9 dropped Safety Painted scrap carries lead into the iron and then into the food; enamel carries boron; stainless chromium
• K33 confirmed Grey iron 2.5 to 4 % C, 1 to 3 % Si, graphite flakes; melts about 1,200 °C, poured near 1,400
• K34 confirmed Green sand: 80 to 83 silica, 3 to 5 sodium bentonite, 3 to 5 calcium bentonite, 4 to 6 sea coal, 2.5 to 4 water; squeeze test
• K35 confirmed Sea coal burns to a gas and soot skin that gives the smooth peeling surface
• K36 confirmed Walls 3 mm sides, 4.5 to 5 mm base; iron let in at the rim, the thickest section, through several wide flat gates thinner than the wall; gating 1 : 0.9 : 0.8
• K37 confirmed Ferrosilicon inoculation 0.1 to 0.2 % of melt, late, to avoid chill in thin walls
• K38 confirmed Seasoning: sand, never polish; flaxseed oil in thin films baked past its smoke point for an hour, repeated; saturated fats will not polymerise
• K44 confirmed Pattern a hair larger for shrinkage with sloped sides; grey iron shrinks about 1 %

In the Index

Iron and steel The kitchen and its dishes