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Author Topic: cardboard hulls  (Read 4126 times)

lighterman

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cardboard hulls
« on: March 21, 2010, 10:30:57 am »

well since my forced internet loss i have been building again, Yeah More lighterage tugs!! i had an idea, this is always a danger with me! i cut some frames out and to make sure i had the stations plotted right and the shape was faired well i did them in card and pasted a board with the keel line and then using paper scored and glued. now this was pva and was setting real quick but to get an idea of the line i added a deck line knuckle  so cut some slots and added more buttock line beams and i found this was growing stronger....


then went on to cut plates and add them all the time the shape was fine so i kept going..
 well in the end i had a nice half hull with a good run to it so decided to add some 1 inch squares of newspaper painted with pva all over... well next day when it dried it had the hardness or plyboard! HANG ON A MIN... this will make a plug.... so i did it's mirror image on another board the same way and then did a bit of filling with polyfiller and smoothed it and painted it and BY THUNDER! i had a two part plug! which has since been used  to make a mould and i have since drawn a full hull from the clamped two halves and it has come out well!
i have started work on this hull for a mate that wants a tosher (launch) tug so will make a nice 1/ 24 boat or a 1/48 ship towing hull.... i know this may seem a long winded way but i took the idea from the shipbuilding industry in the war... BUILD EM BY THE MILE.... CHOP EM OFF BY THE YARD! i now have a rather smart way of knocking out a nice tug shape hull that can be adapted with a little thought and some glue! so if anyone wants to borrow a 2 part mould or have a hull cast give me a shout! now i fancy a 12 inch to the foot scale model of the first tug i worked on.... wonder if the catering manager  would mind if i moved the kitchen and the dining room


 









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Patrick Henry

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Re: cardboard hulls
« Reply #1 on: March 21, 2010, 10:36:34 am »

What a good idea...now, if you could knock up a 1/32nd scale USS Ohio for me?  %)


Rich
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lighterman

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Re: cardboard hulls
« Reply #2 on: March 21, 2010, 11:09:43 am »

how long would that come out at?:)
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Patrick Henry

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Re: cardboard hulls
« Reply #3 on: March 21, 2010, 11:32:40 am »

err...you'd need an awful lot of paper!

Can't find my calculator, but around ten feet or so...big!!


Rich
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lighterman

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Re: cardboard hulls
« Reply #4 on: March 21, 2010, 11:55:04 am »

now whats that russian word i am looking for.... ends in OV.. ok2
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The Antipodean

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Re: cardboard hulls
« Reply #5 on: March 21, 2010, 02:10:52 pm »

That is great, and I bet it will be strong when finished.
I used cardboard on the first Plaudit hull I built, ply frames, cardboard clinker hull wirh epoxy resin coating inside and out, only leak it ever had was through the stuffing tube.

I look forward to seeing how it goes.
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Umi_Ryuzuki

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Re: cardboard hulls
« Reply #6 on: March 21, 2010, 04:23:27 pm »

Greenseaships did several ships using cardboard...

Check out one of his builds here...
http://www.rcgroups.com/forums/showthread.php?t=531343

Or click on his profile to see a few more.

 8)
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lighterman

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Re: cardboard hulls
« Reply #7 on: March 22, 2010, 09:58:10 am »

thanks for all the great reply's ! so far i have drawn two hulls from the mould in fibre glass and no i am itching to have a bash at a truly cardboard full hull! watch this space..
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chingdevil

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Re: cardboard hulls
« Reply #8 on: March 22, 2010, 01:22:04 pm »

Can you do a 1/32 hull of Regain,  She would come out at about 32"


Brian
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lighterman

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Re: cardboard hulls
« Reply #9 on: March 22, 2010, 07:06:44 pm »

Hi Brian. have you seen the plans for the new tugs? the recruit and the mersina will be going when they come over. the regain would make a loverly model for steering matches. hows youe one coming along?
Martin
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chingdevil

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Re: cardboard hulls
« Reply #10 on: March 22, 2010, 07:51:23 pm »

Martin
I had to put it on hold last year due to family issues and having central heating fitted plus the decorating after that. Also Shwmbo noticed the kit that she had brought me was not moving on, so I am just finishing the Clyde Puffer then back on with Regain. Will need to go down to the dock to get some more measurments of the superstructure, later this year.

The new tugs come in May if my memory serves me well, are the plans for the new tugs available anywhere, might be my next model ;) ;)
Brian
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nemesis

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Re: cardboard hulls
« Reply #11 on: March 22, 2010, 08:50:37 pm »

Hi, Vic Smeed designed the 36 yacht "Krispie" using, guess what, rice krispie packets cut into strips. It worked well when it was all sealed with paint. Also the "Velarde" cargo / reefer was made with gum strip paper, quite strong when dry & very light. As you say it is another way.
                                              Nemesis
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Colin Bishop

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Re: cardboard hulls
« Reply #12 on: March 22, 2010, 09:08:18 pm »

I still use gumstrip paper, it's a very versatile material and, if Martin will forgive the plug, we are featuring it in the forthcoming Model Boats Commemorative Issue to be published in May. Properly treated and finished, it will outlast styrene comfortably.

Colin
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lighterman

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Re: cardboard hulls
« Reply #13 on: March 22, 2010, 09:08:57 pm »

i think our barge yard still use fag papers for patches!  ok2
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