RE: Low cost vacuum bagging setup
I'm going to show a small bag I use for composite tails as it is easier to fit in photos.
I make a 1" slot in the edge of the bag. I use gray tacky seal to hold the vacuum line in place. I don't mess with the bag connectors as I have way too many bags in different sizes. I have 1/4" connectors on the vacuum line so I can disconnect them.
The third picture shows a mold in the bag with a piece of breather to the part.
The next picture shows the clips on the ends of the bag. In this photo I only folded the bag over once. If this was an actual session I would quadruple the fold because I pull 20"+ on the skins and I can't have any leaks.
I actually have a T on my pump with valves off each end so I can bag two parts at once. So I can bag a complete composite tail or wing at the same time.