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Author Topic: card board boats  (Read 1341 times)

warspite

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card board boats
« on: April 22, 2025, 05:42:28 pm »

This is the 2nd time writing this as the wife just switched this PC off mid sentence doh!!!!.
Many years ago about 1992, I part built a cardboard vessel based on the castle class corvette hull form from the 'anatomy' book Agassiz, well due to the cost of living crissis, I am at it again, those of you who remember Howard and his SD14, remember his usual comment about continually cutting out slots, I know how he felt.

The castle class vessel will start to be worked upon later after I have completed this latest project, to get back into CAD I decided to draw up a particular vessel (akin to the Mearsk vessel currently being built elsewhere on the site), I particularly liked the stern and subsequently drew it up, not content with just that, last year I progressed along the hull to see if I could make it look similar to the vessel in question, the plan and the drawings were designed around making the vessel out of plasticard, i.e put the parts together and weld with met, stiffeners from scraps, I have a couple of 1mm and 2mm BIG sheets, so the strength would come from the sides the keel and main deck as single items or composites.

I then looked at the fact that I finished a sail boat in lock down (HMS Victory) and have yet to sail her, this vessel I want to make is 1.611 Metres long, so the car I drive means she would have to be split in two or more parts to sit on the back seat, I suppose that could be achieved.

Well, I had the idea to do test pieces to see how it would look, well I went a little further and over the last week, after getting my pc up and running again tested how to print out the parts, after an initial sucessful print of a frame, I tried another a couple of days later (thing I should have unretired the Brother printer I have) the next print failed as the card is too thick.

Years ago at the North West Model Boat Club, there was a story of a member called Bob I think, who used to love paddle steamers, not your average size - no Bob's were big, built in his front room and needed the front window removing to get it out, on the water the term BOBS Board was adulterated to be bobs aboard, as when kids said who's controlling that boat mister, it was hard to explain that bob was indeed ABOARD the boat as he used to sail it, lifting of the superstructure to reveal the seat and controls, the reason for this little bit of information was what the boats were made of - cardboard - cereal packets to be more precise, and why I built the castle class.

Well here is a couple of pictures of the vessel parts I have constructed, so to be clear, I am using a can of EVO-STIK solvent free IMPACT multi-purpose contact adhesive, bought prior to lockdown (when unsure actually).
To make it scale I have placed parts on a A4 template so that they print out at a uniform scale, all the parts are made by gluing the A$ print to the card collected from cereal packets and pizza boxes (Lidl Alfredo type) then cut out with a stanley knife (sometime requiring several passes to score through the card), the finish is not good but it gives an indication of how the plastic card bits would go together. It takes longer for the glue to go off, otherwise it would have be completed ages ago, I have two more parts to stick on the 2nd block and the plating of the bottom to show what it looks like completed.
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert

minimariner

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Re: card board boats
« Reply #1 on: April 22, 2025, 08:32:24 pm »




                 I think you are talking about Bill who lived in a flat, that`s where he built his boats,
                  Finding most of his building materials out of skips.
                 
                  In the second photo you can see Bills hand giving it the thumbs up.
                  His head is in the wheelhouse.

                 Photo`s taken at Southport boating lake many years ago.
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warspite

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Re: card board boats
« Reply #2 on: April 22, 2025, 10:52:23 pm »

Your right I remember the face from photo's I was shown at the time, it was about 30 years ago and the person telling me may have embelished it a lot, especially about the bob's aboard bit, that and an aging memory.


In CAD the item goes together ok, card not so much, that and I haven't done this for a while, in card that is.


where the wife works they get a material call epoxy glass board, about 0.38 thk, its flexible and looks like the stuff plastic folders are made from, if she gets a sample I will try different glues on it, they also get pertinax a brown plastic kind of board as well, but I am very interested in the palm board she spoke of that is in 1 and 0.5mm thk sheets, apparently if the sheet is damaged in the corners they dont use it and she said she might be able to get a sample of each, at just about 900mm x 800mm, yes please.


The castle class I alluded to was made from a thick cardboard that was used to be the base sheet for A1 pre cut sheets for a dyeline printer a drawing office had at seddon atkinson's, the sheets were precoated with a yellow material that was burn't off with ultravoilet light and the remnants fixed with a amonia solution. the card was very useful.
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert

warspite

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Re: card board boats
« Reply #3 on: April 22, 2025, 11:15:57 pm »

This boat is draw in blocks,
Block 1 is the stern
Block 2 in the area under the superstructure and where the motors would sit,
Block 3 and 4 would be the same as they would be the same length and parts
Block 5 would be the start towards creating the bow
Block 6 & 7 would be the transition to the bow.


I cut some more cereal boxes up for stock, so I could conceivably create blocks 3 and 4, though it does depend on whats left from plating the 1st and 2nd blocks hull.
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert

Ralph

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Re: card board boats
« Reply #4 on: April 23, 2025, 08:34:52 pm »

I seem to remember many years ago there were plans available for a small yacht built from cereal boxes, think it was called Krispie or something similar.


Ralph
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dodgy geezer

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Re: card board boats
« Reply #5 on: April 23, 2025, 08:58:07 pm »

I recall the Krispie - it was plank on frame, and the planks were strips of card. Solid, not corrugated, they were cut from cereal packets and two layers were used, at right angles to one another.


I designed and built a cardboard slope soarer with Jedelski wings - the 'Card Bird', but it was really too heavy. I used cardboard for model boat boxes - they were fairly waterproof with a coat of emulsion - but I eventually went over to using Correx....
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warspite

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Re: card board boats
« Reply #6 on: April 23, 2025, 11:36:55 pm »

Its a versatile material and readily available in various thickness, the bigger the box the thicker the card usually, completely plated the bottom, waiting on the last two pieces to dry, because I was only going to build block 1, I would have assembled it differently, more akin to the whole sheet version, I.e. both sides fabricated as single items and the plating I would have taken a little bit more time doing, but this is a prototype to see if the parts would have gone together as designed.


The answer is no or if I had taken extreme caution - maybe, I have noticed some flaws, like some strips were too thin with bits not sitting where the should as there was not enough material, that's easily rectified, a beam at the back seems to be wider than designed, that needs looking into. and the frames all needed if in card to be double thickness for rigidity, with other stringers designed in (more slot cutting).


If I had plated in plasticard it might not have worked as well as thought as the bends at the sides struggle under tension.


The rudders are really small and the support structure will have to be extremely rigid, will be looking at how I would have fitted the shafts means getting back on cad to create a template to mark out how to cut the slots, some of you may have noticed a couple of circles on the frames as to where they pass through them, these would have been cut out prior to fitting if in plasticard, if I decide that the palm sheet (not sure if thats correct spelling or name) if the wife gets some, is ideal, I might try version two, using the prototype to form the plating as it's not far of what it should be - I have an idea - LOL.


heres another two pictures
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert

Circlip

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Re: card board boats
« Reply #7 on: Yesterday at 07:04:12 am »

"Krispie" so named for being skinned using big K's corn flake packets. Another from the immortal pen of Vic.


 Wanna copy? knee male addresses via PM.


 Regards  Ian
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warspite

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Re: card board boats
« Reply #8 on: Yesterday at 11:11:21 am »

I'm have enough problems with this one, lol, thanks anyway.


Here are the last 4 pictures of the prototype, the right way up,, if the wife does manage to get the card I will look at posting the update.


cutting the shaft slots will be the next step and seeing if they line up reasonably, constructing the rudders and their support mechanism will be a challenge in itself.


The photo is what I am going for
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert

warspite

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Re: card board boats
« Reply #9 on: Today at 12:10:48 am »

well surprised, I created a template of the area of the hull where the shaft comes throughand marked it on the hull, incorrectly at first, but while I was cutting out it matched perfectly with the circle on the frame, after cutting the other frame with a slot (i couldn't get the knife to penetrate so it was easier to slot it) and laying the shaft, it seemed to all line up, I will see how the motor lies in the space to determine what structure to construct to support it.


Oh, and the wife didn't bring home any sheets of material, so onto the completion of the hull of the castle class - it was always destined to be a recovery vessel, I was planning on a luffing frame, then I wanted to modify a toy trucks telescopic crane or at least create one, this would deploy a recovery ball to bring vessels in.
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Operational - 1/72 LCMIII, 1/180 Sovereign, HMS Victory to be sailed
Non Operational - 1/72 Corvette, 1/72 E-Boat, 1/72 vosper mtb
incomplete, tug, cardboard castle class convert
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