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Old 04 July 2007, 19:18   #11
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Sooo..are you inviting guess's then..
If you like!

Don't think this is a difficult one though.
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Old 04 July 2007, 19:56   #12
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Marine Grade

The specific grade of aluminum for marine apps is 5086. I used 6063 T6 extrusions in the building of my cabin on my boat, and stick welded it using 4043 rod. The welds are strong, and I haven't had one fail or crack yet, but If I could have I would have used a mig welder.
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Old 05 July 2007, 02:54   #13
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Aux motor mount?

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Old 05 July 2007, 03:35   #14
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Andy

Take a trip down to Pepe marine on Hayling Island, they fabricate the range of Aluminium fishing boats in the shed alongside. Its an amazing process to see, Ali hulls being welded up from sheets over a former then lifted off.

When I was rebuilding transom on my boat they supplied and cut to shape a sheet of Aluminium 15mm thick and about 120 x 75cm for a very reasonable price. It was an off-cut from one of their transoms.

They have lots of off-cuts, are very helpful, and take a genuine interest what you are doing.

Oh, you are probably making your swoopy not an 'A' Frame piece of sculpture for the project.

Nasher.
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Old 05 July 2007, 03:46   #15
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On the money as usual Nasher. Yes an "A" frame, design won't be finalised untill I've got the RIB back home and I've made a cardboard mock up.

I'm off the portsmouth later this morning to rumage though some scrap bins at Elliotts Signs (find some Polycarbonate) might just take a trip down to Pepe after.

Is that the place you told me about Nasher?

Andy
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Old 05 July 2007, 04:19   #16
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Have you considered asling this question on Boatmad for some other input. Theres a lot of knowledge on boatbuilding over there and a few of the members CYCO springs to mind have business's producing marine fabrication. Also Ribnet's nemesis Johhnny Fuller is very knowledgeable about this stuff
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Old 05 July 2007, 04:29   #17
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Have you considered asling this question on Boatmad for some other input. Theres a lot of knowledge on boatbuilding over there and a few of the members CYCO springs to mind have business's producing marine fabrication. Also Ribnet's nemesis Johhnny Fuller is very knowledgeable about this stuff

I'll have a go in a mo Stuart. Thanks.
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Old 05 July 2007, 04:56   #18
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If you like!

Don't think this is a difficult one though.
10mm,

Got me.
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Old 05 July 2007, 18:06   #19
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Went down to Pepe's boatyard and had a chat, they suggest that instead of using two large pieces of plate I should have a welded box section that would be much lighter and be more ridgid. I think that the price will be beond me however.

I will still persue this enquiry however and look forward to hearing from Pepe's with regard the price and design.
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