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Old 07 February 2015, 06:24   #11
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A little story for you...

Recently a lad round here thought it would be good to fill the hull of his Pioneer tender with expanding foam, he duly emptied several can into the hull via pre drilled holes on the deck, after the foam had expanded he plastic welded the holes, unfortunately both him and his boat were blown clean out of the water when the blow torch he used for welding ignited the trapped fumes in the hull.

The left over bits of the boat are lying on the shore here. You would think a hand grenade had been dropped in it. Luckily only the lads pride was hurt.
I thought that was going to end with a picture of a huge pile of expanded foam with bits of boat sticking to it!
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Old 07 February 2015, 06:44   #12
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Quote:
Originally Posted by A1an View Post
A little story for you...

Recently a lad round here thought it would be good to fill the hull of his Pioneer tender with expanding foam, he duly emptied several can into the hull via pre drilled holes on the deck, after the foam had expanded he plastic welded the holes, unfortunately both him and his boat were blown clean out of the water when the blow torch he used for welding ignited the trapped fumes in the hull.

The left over bits of the boat are lying on the shore here. You would think a hand grenade had been dropped in it. Luckily only the lads pride was hurt.
BLIMEY Nice!
I think the main reason some manufacturers inject Foam is because it's a cheap way to reinforce/stabilise and add rigidity to what is often a pretty light layup in the first place
Like most Cheap Fixes...best avoided!
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Old 07 February 2015, 06:46   #13
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would avoid foam like the plague! We have cut the decks out of so many boats in our boat club to remove water logged " closed cell" foam that we are getting quite good at it. Get a few guys on the deck in a choppy sea compressing the foam underneath and it breaks down and soaks up every bit of water it can find. Don't go there.
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Old 07 February 2015, 09:31   #14
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would avoid foam like the plague!
That said, judging by the photo, I'd say Boston Wailer may be using the right technique.

I mean with the chainsaw - obviously
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Old 07 February 2015, 09:52   #15
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Originally Posted by A1an View Post
A little story for you...

Recently a lad round here thought it would be good to fill the hull of his Pioneer tender with expanding foam, he duly emptied several can into the hull via pre drilled holes on the deck, after the foam had expanded he plastic welded the holes, unfortunately both him and his boat were blown clean out of the water when the blow torch he used for welding ignited the trapped fumes in the hull.

The left over bits of the boat are lying on the shore here. You would think a hand grenade had been dropped in it. Luckily only the lads pride was hurt.
Oh yes, those fumes can prove costly if they go up...

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Old 07 February 2015, 10:57   #16
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That said, judging by the photo, I'd say Boston Wailer may be using the right technique.

I mean with the chainsaw - obviously
Duh.... OBVIOUSLY!!
Maybe it's a Half Share Boat???
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Old 09 February 2015, 09:49   #17
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Now I am confused. The tubes attach to the hull, so did the hull break in two and leave part of itself attached to the tubes? Was it a fiberglass failure?

Either way the tubes were still floating so technically the boat was still floating above the water
It was a 6 or 6,5m rib used for diving.
The hull must have had a crack and water came inside so it lost it buoyancy.
The glue was obviously starting to fail, it was PVC floats with all of the Mediterranean sun 6 months a year.
The engine was 120hp (I mean, rather heavy).
Hull and engine and bow unglued away in one single piece while floats remained tied to the mooring buoy.

All in one night.
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