Hi guys

My question is this. I have tried the prepreg and each time I get pinholes.

My problem may be of my own making. I have 2 vacuum pumps. The oil  bath works to absolute 29.9 HG.

I am reluctant to leave this running over night for fear of burning it up.(Warren said it would be OK I but haven't tried this yet)

My other vaccum pump will only run at 24 HG but is designed for 24 7 running. It is a air vane type.

It is this pump that I have used with both of my preprg tests. Is 24 HG the problem???

I haven't done another test yet.

Thanks

Fred