RE: ViperDog Build Thread
The sheeting and wing cores are placed between the shucks.
Adjust parts to fit and then temporarily pin the parts together.
Tape the parts together, insuring parts are straight, and then remove the pins.
I used vacuum bags made from 4 mil thick pieces of plastic tarp. Commercial vacuum bags also work fine.
The edges were sealed with inexpensive latex caulking.
A picture of my Vacuum Pump is also shown. It was made from a refrigerator compressor, a few pieces of PVC, and uses a vacuum switch to shut off. It turns off at about 6" of vacuum.