val chisel = <chisel:chisel>;
val diamond_chisel = <chisel:diamondChisel>;
val obsidian_chisel = <chisel:obsidianChisel>;

val iron = <ore:ingotIron>;
val diamond = <ore:gemDiamond>;
val obsidian = <ore:obsidian>;
val stick = <ore:stickWood>;

recipes.remove(chisel);
recipes.remove(diamond_chisel);
recipes.remove(obsidian_chisel);

recipes.addShaped(chisel, [[iron], [stick]]);
recipes.addShaped(diamond_chisel, [[diamond], [stick]]);
recipes.addShaped(obsidian_chisel, [[obsidian], [stick]]);
