When I first discovered wanting to take up blacksmithing as a hobby, I searched and searched for designs and a website to help me get started. Then i discovered AnvilFire
, they have some F.A.Q.'s and a whole bunch of info on starting up. They also have a help section called "Guru's Den" you ask questions and they will answer them.
As a begainner at Blacksmithing they recommend to build a forge out of a Brake Drum
I decided against it because I really didn't want to be using a rusty piece of junk to hold 3,000 degree charcoal and white hot iron.
So i asked the guru guy a lot of questions.
And I made plans on it
Basically its fire brick in a square pillar shape stacked like a brick wall