Under a spreading chestnut tree the
The village smithy stands;
The smith a mighty man is he, with large and sinewy hands;
And the muscles of his brawny arms are strong as iron bands.
by Robert Louis Stevenson
If you look in the bowl on the forge you will see a ring that is cracked in half. That ring goes around a damper in the center and the forge wont work right without it.
This is the new part for my coal forge to replace the cracked one in the picture above, I made it out of a old iron skillet, I couldn't use steel because it would melt. 
This is a cobblers shoe stake that I found down the road from our house at an abandoned farm and the owner said we can have any thing we want from there.
