How to Get Nightmare Pickaxe in Terraria | Nightmare Pickaxe craft Terraria

I'll show you how to get Nightmare Pickaxe in Terraria.
The Nightmare Pickaxe is a relatively early-game pickaxe.
Its Crimson counterpart is the Deathbringer Pickaxe.
And in order to craft it, we need 12 Demonite Bars and 6 Shadow
Scales.
Which can be obtained by killing the Eater of Worlds.
So let's kill him quickly.
We melt the Demonite Ore we got from the boss on the furnace and
get a Demonite Bar.
And now, having received the resources we need, we go to Iron or Lead Anvil and craft the Pickaxe for which we did all this.
Thank you for watching.
And goodbye.

[Some]

If i need the nightmare pickaxe tk break the weird stone, to break the weird balls, to spawn the boss, to get the scales, to craft the pickaxe, THEN HOW DO I CRAFT THE PICKAXE