I have a homemade bandsaw made from mostly wood. I think my saw length is around 63 inches.
I bought it about 15 years ago from an old retired machinist. The only drawback I have with it is its narrow cutting area. (about 4-5 inches), otherwise it will cut all day, including titanium using a 14-18 bimetal blade.
He told me he made it from plans that were printed in a Popular Mechanics book. If there even exists a web site for old Popular Mechanics articles, I would start looking back at least 20 years.
It's a little late tonight to take pictures, but if you don't find the plans I can snap a few photos for you.
Good luck
Pat