Forget crafting pickaxes now imagine mining them. You can mine every pickaxe with Pickaxe Ores mod. Stone pickaxe ore is mined with a stone pickaxe and over. Wooden Pickaxe ore is mined with a wooden pickaxe and over. Iron Pickaxe Ore is mined with a stone pickaxe and over. Gold Pickaxe Ore is mined with a stone pickaxe and over. Diamond pickaxe ore is mined with a iron pickaxe and over. Every pickaxe ore (apart diamond) is on the layer of there ore there made out of. diamond in the nether is rare but is around the stage of iron height.
Download link: Pickaxe Ores Mod 1.7.10