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[John W E]

  Mr Kayem Have you got a new role, working in a clock factory as a winder-upper cos by gum you certainly do some winding up me lad

Pointy, I hope you realise you have 3 of the best model hull manufacturers helping you out here when we can stop the winding up 

aye
john e

bluebird

[PSSHIPS]

Nice one Lawrie, this £$%t had a go at me, but, "Pointy" being a good lad an all, put him right, but, he hasn't appologised!

 We all have our own ways of making and modifying hulls, Kayem's way is just his way.

 We all do it differently, like he says, "each to his own"

  ::)

 

[kayem]

Robin, whats your problem?

Lighten up!

Lawrie

Certainly no problem with you Lawrie, never has been and I hope there never will be, and like you say, we're all on the same side. We all have our own specialist knowledge, and I've never said that my way was the only way. Pointy was being given some advice that wasn't the best, so I was just trying to help him, for example advising him to avoid mixing materials that will by your own admission, react with each other, so where's the harm in that? Hope I won't have to duck next time I pass a Model Slipway stand at a show.

Still friends?

[Pointy]

Please, please, please don't fall out on this thread I value all advice but now worry about asking  :-\

I've never tried to make fibre glass before so forgive me asking what may be silly questions.

I can't find what I need locally so have been looking on the internet at fibre glass suppliers and getting a bit confused as to what I need.

1. Release agent- Needed if I use styrene as a mould?
2. Gel coat- What is this and do I need it? Does it go on then the matting?
3. Matting- Any particular type best for this kind of thing?
4. Resin - What kind? there seems to be an awful lot of choice in the matter!! Does this go on last?
5. P38. For filling then a lot of elbow grease for sanding

[gary r uk]

hi pointy
thanks for the pm
the black park warship squadron will be at kingsbury water park this sunday for warship day i think its a good idea for you to join us.
glad PE is working better now he has proper radio gear glad to hear your rudder now does what it says on the tin.
as you say some advice was better than others and i found what came from slipway & psships worth it
& you should find a kit at halfords made by a company called Holt's its about a tenner.
hope to see you sunday pm me if you need direction
cheers
gary

[Guy Bagley]

gel coat does not go on after the matting gary r UK..... it goes on first, you then lay up the matting with resin after  an application of gel coat, you fully wet out the matting with resin, the gell coaot goes nearest the mould, its the ' outer surface of the hull as it were.

and pointy, there are plenty of fibre glass places locally, the one i use is in desborough road in high wycombe, there is another  i have heard of near uxbbridge/ hayes, but i have not used it, sadly strand  supplies in brentford appear to have gone now..... :(

[Tug]

For a release agent use wax polish, AVOID at all costs anything with silicone's in it.

also cling film works good and just peels off afterwards. [did this with a 14 foot canoo a while back I used timber lathes for added strength glassed in]

spelcheck allowed canoo ButI just know?

[Dan.Lord]

Interesting reading this thread, amusing too. Talking of lengthening ships I thought these pics might be of interest of how the big boys do things. Dan.

[Guy Bagley]

great pictures there !- i wonder if they will re- inforce the joiints with tape and how much GRP will that use up.... and imagine all the rubbing done that is required !!! ::)

[bigH]

  [Even crooked car dealers do it' lets do it, lets all cut and shunt our boats  ( with apologies to Cole Porter)

[cbr900]

Pointy,

It is your boat if thats what you want to do then do it, just take note of the advice posted here, it is your boat to do with what you like, I have lengthened two models so far with no problems just take your time and it will work OK mate....



Roy

[Pointy]

This is proving to be bloody difficult for me. :-[

Three failed attempts so far, two failed at the gel-coat stage. Trying a different method of combining styrene outer hull section with a fibreglass interior surface. Going to have to rely on good old P38 and sanding fibreglass for the bilge curves as I just can't get the outer hull shape right by bending styrene alone. Its a big section I'm inserting and I just cannot match the hull curves without making the rest of section inaccurate somewhere while bending. Thats why I'm using this "mishmash" method.
Don't know if it will work but I'm a stubborn "xxxxx". 

[HS93 (RIP)]

Just a thought and I HAVE NOT TRIED THIS but how about spacing the hull with somethink like 20 mm x 20mm deck supports and a keel support and possibly a support in between glass these in so the hull is rigid then try using this product that I have used on decks and other parts of boats sold by   http://www.mickreevesmodels.co.uk/  its called pro skin and is only 0.2 or 0.3  or 0.4 and this can be overlapped on to the hull on both sides and as its so thin can be faired in .it can then be glassed on the inside to give it strength and it paints well. Peter

[Pointy]

Think I've pulled it off!!
The new section has an outer layer of styrene and an inner layer of fibreglass. I made sure I overlapped the joint and must have used about 3 layers of matting. This has resulted in the section being a lot more ridged than the rest of the hull but don't think its a problem? I used P38 for the bilge curves so I have a lot of sanding to do but figured it gave the whole thing a little extra strenght. Later I plan to put a long bit of strong ply inside the hull using epoxy and P38, this will act as a keel and a bed for the motor etc..

Thank you to everyone who gave advice and encouragement, it all helped and gave me confidence to have a go. Whats even better is that my old coaster is in one piece as using it as I had originally planned, I now realize would have upset me.

[HS93 (RIP)]

good glad to hear so when you are a bit further on how about a picture

Peter