I joined the forum today after following a search engine result for a key word "aircraft exhaust" and read through an older post and replies on building custom exhaust. Some of the advice being shared had me thinking I should use my experience in manufacturing experimental exhaust (and Certified) to be sure those interested and seeking knowledge on the subject get Honest advice. I do not intend to sell my products here, I have enough marketing avenues and word of mouth sales from past and current customers. Rather my intentions are to use my 20 years of fabrication experience (8 in aerospace) to be sure good advice is given. I look forward to freely giving advice, maybe learning something new too....