Agrarian Skies 2:Hammer Time !

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Basic Hammer Use NEI to find the recipe for a wooden hammer. Craft it.

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Gravel Use your new not-so-shiny hammer to beat a piece of cobble into gravel. Once you have a cobble generator set up you can use the hammer to mine the cobble, turning it directly into gravel.

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Sand Now break the gravel with your hammer. This will turn it into sand.

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Dust And the final round of hammering is to turn sand into dust. You can process other materials with a hammer to get different resources but gravel, sand, and dust are your 3 most important blocks in the begining.