I have found many threads on how to make a vertical forge. Some with pics and some just text. There is a lot of information out there. With that said I still can't find the answers to my questions. I'm going to open this up with the hopes of a little help from the lady's and gentlemen here. The rough tub is 12" dia x18" long. I will put 2" of Inswool HTZ on all sides topped off with some satanite and ITC-100. Just the basic forge. Now for my questions. After reading the FAQ at High Temp I see this stuff is bad for you. For the top lid, is it better to seal it or go with the kaowool that is ok not to seal. I am concerned about sealing between the sides and top if it all has satanite on it. It might not sit flat enough. I know the inlet pipe has to be off center. Should it also be tipped up ??? 10°/15° or ?? to help in the movement of heat. The 4x4" inlet window will start 4" down from the top. With the Inswool going 2" down from the top that leaves 2" to the start of the opening. Is that enough?? This is my first forge. I truly appreciate any help or suggestions you can offer. Thank you very much for your time.