Diabolical1... Thanks very much. I like to develop things, design things, try things... Even ones that really fail miserably. Its a lifelong avocation. I've spent a lost of time over the past 16 years playing with these and I have had a lot of help from and gotten to know so many great guys who have helped me think ideas through.
My guy welded 5 of the 6 runners to the plenum and is calling it a day. Tomorrow he will finish the last runner and put on the 2 end pieces. I am going to try to get him to emboss the "7" from the emblems he's making for me. He did a "G" on the first ones he showed me (below as well). The ends will be close to a semi circle on each end.
Gordon
Here are some pictures of the first end piece for the plenum. They were too shallow, but it gives you an idea of what they might look like.
