I just read this thread tonight. I found the Quilting Board & in the last 6 weeks I've acquired a 401 & 66-18. Your stand and projects would be impossible for me to build, yet the pictures are so clear and helpful it almost seems as if I could.
You gave me good advice on another thread. My father was a brilliant tool & die engineer of the old opinion that such things weren't suitable for me to learn because I'm "a girl." Your posts remind me of his works which were so measured and precise. When he required a wheelchair he designed & had made parts to retrofit and customize it until it was exactly as he wanted it. I have a box of his design templates which I've used for art, and now to cut fabric. Sincerest hanks for all your sharing: it was memory lane and process fascination and wishful thinking all rolled into one.
I will go on propping my machines on a stack of fabric - and checking back to see if you ever sell these stands!