Hi I'm having some real problems achieving full vacuum when I'm bagging. I've found that the flow mesh is puncturing the bag, I've tried adding a layer of peel ply on top of the mesh and this helps a bit but I still seem to get leaks from pin holes out of 8 attempts to mould the part I've only had sucsess once (unfortunately I had a stray strand on the visible side!😠) any help or tips would be very much appreciated because as you can imagine I'm starting to loose heart with producing the part. 

Cheers Tony

I think a very large reason for the bag getting punctured by anything is a direct result of not having enough bag. Bagging film is extremely tough, until it starts to stretch. As soon as it needs to stretch even slightly, then it will puncture very easily as soon as it touches anything sharp.

For me, I virtually stopped getting any leaks as soon as I started making the bag WAY bigger than I expected.