Here's mine. I just finished building it last week out of some scrap hardwood floor boards that were in my new home. I use a bobbin for thread tension and there are small rings spaced 2 inches apart to hold the bobbin. With the adjustable uprights, the wrapping positions are almost infinite. Also, I spaced the boards that hold the uprights so that the carriage bolt would ride in the groove/track in the boards and the uprights can be slid out the sides if I need to replace them for some reason. It's the same design as my old wrapper, but much nicer and the third (middle) upright will help with those longer sections when you are trying to control the flex while wrapping those tip most guides.

Here's a few pics:

The Track/ Groove Created by spacing the boards just far enough for the carriage bolt to slide into.



The rings to hold the bobbin



Far right upright



This is about 30" wide and it's perfect for those multi-piece blanks and I also use a few free standing uprights for longer blanks.

Lou