It's been quite a long time since I last posted and I have a question for a charcoal forge I'll start building this weekend. For the foreseeable future, the forge will be used to make chisels and maybe a few short blades.
I'm planning to use Ytong blocks (porous concrete) as the base structure of the forge body, jointed with fire cement and covered with a layer of adobe. The hearth maximum size would be around 8" by 16", with probably only 4" by 8" used most of the time (using firebricks to reduce the hearth size).
While thinking about the design, I had a (probably) whacky idea 2 independent air supply circuits, each with 2 tuyeres (with their own stop valve). The idea would be able to supply air not only to the restricted zone I'll use most of the time, but also to the whole hearth when required. If it works out, it could be very versatile and quite fuel efficient as well.
So the question is... I am out of my mind or could that work?
Thanks in advance for all opinions on the subject