[TheForge] re:burner question

[John Emmerling]

I've always been a fan of the blown burner school. A recent storm here 
on the N.OR coast cost me 4-5 hrs today of lost forge time while the 
power co and our local electricitian repaired the damage. So I've 
decided to build a venturi forge and just sent LZ an order for stainless 
burner flares. Thanks Larry! Any helpful construction hints? Do the 
burners work better angled up? Some venturi forges I've seen  have hot 
spots under the burners when they are mounted on top. Is there an 
optimal distance to reduce that effect?  How many burners on a 12"l  x 
10" dia pipe forge using 2" kaowool?
Thanks
John Emmerling
Gearhart Ironwerks