We split into 2 teams. One did the floors and the other one laminated bulkheads.
It looks simple to work on floors but it needs more hands so we decided to have 4 people on it, whereas 2 for bulkheads.
Pulling out the hose we used for blocking yesterday, we connected longer hoses to the manifold. Laminating yesterday was perfect, I didn't take a photo though.
We've got seperated vacuum bags for each floor so we vacuum them seperately using individual hose in them. Prior to do the same method yesterday, when one is ready to go we open it one by one.
Stack being ready. EDB and carbon uni need to be cut accurate as much as possible. Peel ply and the other stack doesn't really have to be perfect one instead we cut them half a length so that can be lapped over to work easy because of the shape on hull especially on the bow.
Vac tape in pleats on vacuum bag. Make the pleats reasonably enough to have good shrink. I was concerned about the shortage of its width. There wasn't a problem but I will cut it wider than I did.
The MDF for bulkheads has been coated three times and PVA spreaded on. The hose has another tube bored holes in it and we wrapped the wind break cloth up on it.
The reason we used bleeder instead of wind break cloth is that it allows us to see the progress of resin migrating and it is cheaper.
It took less time to get ready to vacuum than yesterday. One advantage of vacuuming is that we can use less resin because the resin on the material can spread evenly further by vacuuming.
Upforward part of bow has been covered by fibreglass. We are going to give it a lap for 40mm on the centreline and right after the nosecone so that can be more stiff because we haven't got a stem.
Hose used for bulkheads laminating was put longitudinally following the edge with covered by bleeder. We have to make sure there is not a disconnection point of bleeder bridge to make vacuuming evenly.
Owing to the stiff shape on bottom of bow, we struggled to laminate fibreglass and the peel ply was even worse to make shape. It has to be better because we don't vacuum it.
1st coat which obviously is way cleaner than above. It has to be as flat as possible. We can check it by the reflection of lights.
Organic fibre which is cheap and pretty strong and can be made in mold. I don't know the name...
dart/pleat
span
The reason why we bore holes on the foam when laminating is to get air out and to spread the resin well.
water-soluble
split
prepreg
pre-impregnated
indentation
NZ flex
organic fibre
Talking about what kind of work we have, how we can deal with it, how many people we need.
It looks simple to work on floors but it needs more hands so we decided to have 4 people on it, whereas 2 for bulkheads.
Pulling out the hose we used for blocking yesterday, we connected longer hoses to the manifold. Laminating yesterday was perfect, I didn't take a photo though.
Vac tape on before hand
We've got seperated vacuum bags for each floor so we vacuum them seperately using individual hose in them. Prior to do the same method yesterday, when one is ready to go we open it one by one.
Stack being ready. EDB and carbon uni need to be cut accurate as much as possible. Peel ply and the other stack doesn't really have to be perfect one instead we cut them half a length so that can be lapped over to work easy because of the shape on hull especially on the bow.
Vac tape in pleats on vacuum bag. Make the pleats reasonably enough to have good shrink. I was concerned about the shortage of its width. There wasn't a problem but I will cut it wider than I did.
The MDF for bulkheads has been coated three times and PVA spreaded on. The hose has another tube bored holes in it and we wrapped the wind break cloth up on it.
The collision bulkhead and glass for it being ready to be cut
Glass for another bulkhead cutting
a pressure gauge for the bulkheads laminating
on cutting perforated release film
Vac tape on MDF. This has a couple of holes on the edge, which part can't be used
just inside the tape diagonally
ready to go. Hull will be way more stiff after doing this job
The reason we used bleeder instead of wind break cloth is that it allows us to see the progress of resin migrating and it is cheaper.
It took less time to get ready to vacuum than yesterday. One advantage of vacuuming is that we can use less resin because the resin on the material can spread evenly further by vacuuming.
vacuum on
Upforward part of bow has been covered by fibreglass. We are going to give it a lap for 40mm on the centreline and right after the nosecone so that can be more stiff because we haven't got a stem.
Hose used for bulkheads laminating was put longitudinally following the edge with covered by bleeder. We have to make sure there is not a disconnection point of bleeder bridge to make vacuuming evenly.
They all connected with each other by bleeder.
Owing to the stiff shape on bottom of bow, we struggled to laminate fibreglass and the peel ply was even worse to make shape. It has to be better because we don't vacuum it.
cut where the big span on it
Talking about the girder laminating. I don't know what the sheet is made of.
1st coat which obviously is way cleaner than above. It has to be as flat as possible. We can check it by the reflection of lights.
Vacuum goes well. Checking the pressure gauge. If there is a leak, just give it a hand on it.
Organic fibre which is cheap and pretty strong and can be made in mold. I don't know the name...
dart/pleat
span
The reason why we bore holes on the foam when laminating is to get air out and to spread the resin well.
water-soluble
split
prepreg
pre-impregnated
indentation
NZ flex
organic fibre
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