craftingTable.removeRecipe(<item:tconstruct:efln_ball>);
craftingTable.addShaped("efln_ball", <item:tconstruct:efln_ball>,[
[<item:minecraft:redstone_block>,<item:thermal:explosive_grenade>,<item:minecraft:redstone_block>],
[<item:thermal:explosive_grenade>,<item:minecraft:tnt>,<item:thermal:explosive_grenade>],
[<item:minecraft:redstone_block>,<item:thermal:explosive_grenade>,<item:minecraft:redstone_block>],
]);
