I am new to vacuum bagging hand layup carbon fiber. I have watched many videos and successfully made some components. The question I have is how much vacuum to pull for a hand layup, 4 layers of 2x2 3K twill, epoxy resin. It is on a relatively flat surface 38 inches x 12 inches. Height above sea level is 800 ft and I can pull -28 inches with my pump. I am looking for max strength with max lightness, lightness taking preference. I have heard everything from max vacuum you can pull to -10 Hg. Is there an easy answer to this? Thanks Don
