SamGurdus Posted November 12, 2018 Share Posted November 12, 2018 I have heard of 4fg and 2fa, I understand that the g or a means if it is for guns or blasting, but which mesh screens correspond to the 4 and 2? Link to comment Share on other sites More sharing options...
dagabu Posted November 12, 2018 Share Posted November 12, 2018 (edited) We use FA for fireworks, please google the chart for FG. FG is glazed, not gun. Commonly used Black Powder Grain Mesh Sizes GRADE MESH RANGE FA 3 - 5 2FA 4 - 12 3FA 10 - 16 4FA 12 - 20 5FA 20 - 50 6FA 30 - 50 7FA 40 - 100 Meal D + 50 Fine Meal + 100 X-Fine Meal +140 Edited November 12, 2018 by dagabu 1 Link to comment Share on other sites More sharing options...
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