Ok first of all This is a work in progress, as is the equipment.  At the present time I have only the some what incomplete article covering my attempt to make a compact forced air manifold for a small forge, and the box that it melted.  It is not the best writing but then again your here voluntarily right?

First attempt Gas Forge Stage 1

My next attempt will be using a much better approach. Venturi burner, and high temperature batting for insulation. No fan. Portable. The blower will be over hauled and used for foundry work.