simple question, how mutch vac to use ?
......my concern, once the breather is on, no way to see anything so no wayto see if they are some bubbles !
....... but i'm concerned this would dry out the laminate and transfer all resin into the breather !
any ideas, anyone already done it ?
regardless of vac setting, everything in the bag is supposedly at the same pressure.
The perforated film or peel ply is mechanically forced against the glass cloth.
The resin does not really move much, Its more a function of the release film moving from top of resin to top of the glass.
the only other forces involved that may move excess resin out of the cloth would be
1) gravity (nothing)
2) diffusion (a little)
3) maybe capillary action
4) a leak in your bag ( potentially big effect on transport)
5) slow leak from core (timing issue)
a good test you can do quickly.
wet out 1 square inch of glass and put down on plastic sheet.
add 1 square inch of peel ply
add 1 sqaure inch of breather
add plastic sheet on top
put 15 lb weight (1x1 base) on top of everything
come back in 8 hours to see what happens.