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cbcblaze View Drop Down
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Post Options Post Options   Quote cbcblaze Quote  Post ReplyReply Direct Link To This Post Topic: Leaky Laser
    Posted: 11 May 08 at 10:14am
Has anyone got advice on how to fix a laser with a really bad leak where the deck is joined to the hull at the gunwhale? I've tried levering the crack apart and using epoxy resin which fixed one bit, but it's now developed a very big split further along.  The hull is about to be scrapped but I can't help thinking there must be a way to fix it - like, is there a way of using a very thin router along the whole join instead of levering it apart?
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radixon View Drop Down
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Post Options Post Options   Quote radixon Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 5:58pm
Have you tried using epoxy resin as well as fibreglassing over the top using fibre glass webbing to hold it and stop it spreading.

(only a suggestion, not had to do it myself)
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Post Options Post Options   Quote 29er397 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 6:21pm
I had this problem with my lase, its very common. Initially i pcked the crack with epoxy and squeezed it shut, unfortunately it came apart again only a couple of weeks later. I put the boat into Ovi's so they could do a 'proper' job on it and they did a very good job indeed. They did basically the same thing as you suggest i think... cleared out the old epoxy from the join and re glued the length of the crack. It was a very reasonable price too.
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Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 8:52pm

Epoxy isnt the right glue for lasers you should be using polyester resin i think! Try cleaning out the crack with a junior hacksaw blade first and make sure its bone dry befor you glue.

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Post Options Post Options   Quote djdhi Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 8:52pm

laser deck/ hull join

Hi,

I have had this problem too, on and of , though not with a Laser but a Streaker. I have managed a temporary repair by carefully sawing between the join with a junior hacksaw blade with the pins at the end knocked out. I glued up with epoxy after the edges were roughened in this way, using Bulldog clips, some-one said if it is a polyester boat then I shoudn't be using epoxy, as it does not stick too well with polyester,  I think boat builders use Unibond or something similiar.I try and avoid levering up my dinghy now if I get it stuck in the mud after a capsize. The leverage forces are tremendous.

Good luck with your repair

djdhi

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cbcblaze View Drop Down
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Post Options Post Options   Quote cbcblaze Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 9:21pm

Thanks guys,  that's helped a lot.

I'll try the hacksaw blade method first with polyester resin and Bulldog clips. the boat isn't worth a professional repair so it's my repair or the dump..!!

cheers,

Angus....

 

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radixon View Drop Down
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Post Options Post Options   Quote radixon Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 9:24pm
Originally posted by cbcblaze

Thanks guys,  that's helped a lot.

I'll try the hacksaw blade method first with polyester resin and Bulldog clips. the boat isn't worth a professional repair so it's my repair or the dump..!



You may be suprised what goes on ebay, especially if someone near you is looking and wants a cheap boat and is prepared to do some work on it.
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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 10:12pm
Originally posted by Merlinboy

Epoxy isnt the right glue for lasers you should be using polyester resin i think! Try cleaning out the crack with a junior hacksaw blade first and make sure its bone dry befor you glue.



Lasers are polyester, but epoxy can be used for repairs on polyester. The reverse isn't true though.
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Merlinboy View Drop Down
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Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 08 at 10:16pm
In my experience though polyester resin works best, epoxy eventually fails.  I was always taught to use the right tool for the job!
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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 08 at 7:34am
Epoxy failure's usually an indication of poor surface prep or deviating from the mix ratio on the pack.
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