This is a forge I built for Aaron Cain the tattoo machine maker. He makes custom tattoo machines out of a variety of materials, but mostly mosaic damascus steel. He wants to give damascus steel making a try and I recommended a forced air forge.
I think they get much hotter than the venturi type, but of course that is just an opinion.
Here is Aaron's website it is well worth checking it out http://www.aaroncain.com/