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Old 13 October 2008, 15:37   #11
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Andy what about an anchor bag .
I got fed up with a bucket but did like the way a rope easily flakes into it .
I found an Arborists rope bag on ebay and its great , I just clip the top of it to the ropes on top of the tube in the bow and the rope in the bottom of bag makes a great shock absorber to stop the anchor damaging things .
If i have kit bags in the bow then the anchor bag gets clipped somewhere else so its easy to get at without moving all the bags . Cost me 12
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Old 14 October 2008, 05:47   #12
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If you are concerned with using polyester resin, your searider is made of it and the deck and transom are ply wood.
As long as the fibreglass surface is roughened with sandpaper then cleaned with acetone before glassing you shouldn't have too much problem. Epoxy does stick better but it is not really necessary.
Any good fibreglass supplier should be able to steer you wright.
regard
rm
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Old 14 October 2008, 05:54   #13
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Quote:
Originally Posted by doggypaddle View Post
as long as you dont expect any great mechanical strength from the wood to resin bond polyester will be fine. IE encase the wood completley in matt then glass in.
or paint the wood with some west systems epoxy as a "primer" then just glass it in with the polyester resin.
a small west systemsis kit, enough to use as a primer is about a tenner.
Polyester resin won't stick to epoxy resin very well. But epoxy will stick to polyester resin really well.
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Old 14 October 2008, 12:25   #14
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thanks for that i can now go and buy some resin and i think i will need a lot as the matting we got was 1800 gramms or something like that, and will take a lot to soak in properly.
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Old 15 October 2008, 06:36   #15
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1800grams of glass will need about 4.5 litres of resin using 2.5:1 resin to glass ratio.
I am presuming one square metre of chop strand mat (CSM). Just weigh the glass you are going to use an multiply the weight by 2.5 and that is how many litres you need.
You will need to round any sharp corners , prime the wood with a coat of resin first so when you apply the glass, the resin doesn't soak into the wood and starve the glass of resin. A glass roller will come in handy for consolidating the resin into the glass.
I miss my searider.
rm
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Old 15 October 2008, 07:35   #16
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Polyester Resin Bonding

If you are concerned about the bond strength of polyester resin to the marine ply that you are using, paint the ply with G4. This is a lot thinner the resin but has a similar composition to resin. So it soaks well into the wood and also provides a good bond to the fibreglass. Apply the fibreglass before the G4 has completely dried.
I have done it this way myself and the bond strength is very good.
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