Originally Posted by David M
Very interesting pics of the vacuum bagging process. I have never seen such detailed pictures.
Are the bags and hoses thrown away after curing because of the cured epoxy inside them or are they reused somehow?
How hard or easy is it to remove the bags from the hull
after the epoxy is cured?
Is it an actual bag that surrounds everything or or is it more like sheets
of plastic that you somehow seal out the atmospheric air at the edges?
Are you left with lots of ridges that have to be ground down because of the wrinkles in the plastic?
This is not vacuum bagging but this is Infusion , very different , with bagging the whole boat or parts
are hand laminated and then a vacuum bag is put on top to draw excess resin out and make sure as little air as possible stays in the laminate. ( some air is always trapped so it is a half way solution )
With Vacuum Infusion the laminate is put in Dry and than covered with a nylon reusable foil and than put under vacuum for 24 hours
After this we start the infusion process that takes about 2 hour 45 minutes all done first with a computer simulation and then in real life.
After the complete wet out we put vacuum to all tubes until the part ( in this case the hull or deck
) is cured. The surface at the end is completely smooth and we need very little filler.
The bag removal
is easy but getting the peel ply of is another story. we use a crane for that.
It is not a bag we have made a 60 ft wide piece of Nylon foil with an elongation of better than 400 % so we have no excess resin build up anywhere.
The hoses are thrown away with some other parts
like t pieces and infusion cloth.
I feel at this moment it is the best way to get a controlled amount of resin threw out the complete boat and we infuse every part however small or large of our cats it is a big weight saver.