Running an fan through the middle to blow air up the pipes would help it radiate out. Bend the pipes around a 55 gallon barrel and make a rocket style insulation around it with sand and plaster. Place some sort of central blower to control speed of air
Crawford Push Pick -- The blade is and the knurled handle is anodized hard aluminum. The blade screws in and out so that it can be made into an ice pick, a push dagger, or the blade will store inside the handle to make a kubaton. Very light and strong.