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Blev
#1 Posted : 25 June 2013 12:37:33

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I've now received postings up to Issue 17 and I think it's time, as a wooden ship modelling noob, to start building. I suspect that others are far enough down that route to scout any construction problems I will come across so it's safe to travel.

A couple of questions tho' if you gentlemen would be so kind :-

1) PVA or aliphatic glue? It appears that both will be used but I'm just wondering why. Aliphatic appears to be superior and I have a bit of a downer on PVA anyway.

2) Tools? As a maker of brass loco models (and also as a tool junkie) I've a fair pile of tools available to me so I've just been making up a tool kit appropriate for working with wood (sanding blocks, fret saw, plank bender thingie and so on) and I'll borrow other tools as needed - plus getting the various fillers and primers that I'll need. The question - reading through Issue 8 (Ship modeller's tools: the basic equipment), I'm just wondering how much of that list I'll actually need? I mean, a heart peg? A HEART PEG? Try googling that and see how far you get!

Your assistance would be helpful and you have my thanks in anticipation.

B
arpurchase
#2 Posted : 25 June 2013 12:56:49

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BigGrin Hi Blev
And welcome to the forum, PVA or Alphatic I generaly use PVA which sits on the surfaces of the joint to be glued so not so strong a bond but alphatic has been designed to soak into the joints and the surrounding wood being glued therefore giving a stronger bond the only downside with alphatic is some brands can stain the surrounding area of the joints yellow where it is used so be wary with it when laying the top layer of planks if its a light wood like say lime
As for your tools I wouldn't be too worried it sounds like you have more than enough to cover most needs, I would just buy the odd tool you really need when and if its needed. Hope this helps
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AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

karl1113
#3 Posted : 25 June 2013 14:41:41

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hi blev. a little more info, regards aliphatic v pva. Aliphatic, although described as weather proof(water resistant)I have found it NOT so, can be softened with hot water for fast separation,cold/warm for longer softening.
which is handy for mistake/misalignment, and most importantly it is easier to sand. I always wipe any excess glue with a clean damp cloth. I do use pva for fixing metal to wood as it dries clear. I haven't noticed any yellow staining,only when you coat the face of wood(re-inforcing)I think the drying time(cure rate) is faster,and a better grab rate, hope this helps. k.BigGrin
Current builds: SotS, USS Consitution, San Felipe, D51 loco, HMS Surprise, RB7, Arab Dhow, Jotika HMS Victory
Completed builds: HMS Pickel, Thermopylae, Mississipi river boat, Mary Rose, Cutty Sark, San Francisco II, HMS Victory x5, Titanic Lifeboat, Panart HMS Victory Launch, Hachette Titanic, Virginia Schooner, Endeavour Longboat.

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stujue
#4 Posted : 25 June 2013 16:46:45

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Hello Blev and welcome to the build. I started with PVA then changed to aliphatic, when i started the planking, found it was quicker drying. Some of the other builders have used super glue for the second planking, jury is still out for me as im not there quite yet. And i would recommend superglue gel for the launch planking, you need something quick to hold.

As for the tools. make sure you add a thimble to your kit, this is great for lightly pushing the pins into the planks. you will need to drill every pin position if you intend to use the bamboo supplied, so thats a lot off pins for an un protected index finger.

Good idea to start late and if you check out some of the members build diaries, there is loads of extra info.

Happy building

Stu
Cheers Stu
Blev
#5 Posted : 27 June 2013 20:05:21

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OK chaps, thanks for the advice so far. However ....

I've started construction (apart from the small stuff like cannons which I'll be saving up and doing in batches to reduce paint wastage, etc.) but I've noticed that at least half the timber in the build to date has a twist or a bend in it. I knew that some had found one or two of the frame extensions on the cross pieces were a bit wonky but I've just noticed that the front piece of my keel bends like a banana. And that made me look a bit closer at the rest.

Now it's been a few decades since my woodwork 'O' level and I've been messing around with brass for a few years now so are my expectations for the tolerances for the ply too high or do I have a problem?

B

Captain David
#6 Posted : 27 June 2013 21:17:58

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Ask Customer Services for replacement parts.
Some ply pieces can be straightened by soaking and then pressing - but the keel is critical. A keel jig will not straighten out faulty parts.
Blev
#7 Posted : 27 June 2013 22:58:52

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Quote:
Ask Customer Services for replacement parts.

But there's the rub - I'm only on Issue 3 and there are bent bits in each one. I could open up a few more and check them but it's possible that I could be asking for a replacement for every issue with plywood in it. And there's no guarantee that the replacement pieces won't be knackered too if it's such a widespread problem.

I'll get the straight edge out and check every piece properly.

B

Edit - (1) I shouldn't have done that - the more I looked, the more I found.

(2) Right, done a bit of searching on the site and found a thread in the Victory forum. Pretty much a widespread problem. Anything bigger than a postage stamp = soak it for a few hours and do the wood equivalent of pressing flowers. Or just live with it. Or not. Decision to be made.

B
Blev
#8 Posted : 28 July 2013 09:37:11

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Ok then, taking it slow and steady, I've just about finished the hull up to planking. Now I've gone back and started finishing off all the non-hull bits and pieces.

So - part 1 - if you've still got it, have a look at Issue 16, page 12, photo 12. If you look closely, you'll see that the left hand side of the stern deck extension finishes outside the rib frame while the right hand side finishes inside the rib frame edge. Well, my keel has developed a bit of a twist and replicates that perfectly. I'm hoping that an excess of sanding will solve the problem.

Question 1 :- Am I right or am I goosed?

Part 2 - I've just received my monthly posting which was Issues 18 - 21 and therefore a big pile of planking. Taking them from the packets ready to put them in storage, I noticed that some had a kink in them. A closer inspection revealed that this problem is widespread with only 11 of the 132 bamboo planks received so far being unblemished. The kink can vary between a bit of a double bend thru to a fair old dog leg with, perhaps, a loss of material on the inside of the bend.

Question 2a, is this normal?

Question 2b, as a cure, are we talking the old hot water and a soak job? I ask because this wasn't particularly successful with the ply used in the hull construction.

Question 2c, I'll probably manage to use some of the worst where the kink is near the end in places where trimming of the plank will remove it. And for some of the smallest kinks, another bout of sanding will get rid. However, should the worst happen, are there enough bamboo planks issued to allow me to discard them?

Thanks,

B
karl1113
#9 Posted : 28 July 2013 17:44:44

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right blev. I need to spell a few answers for you.
A. you are working with wood and not brass.
B. wood will shrink and warp with changes in the atmosphere.
c. as you haven't built a jig are you not surprised that the keel is banana shaped?
d. the planking is bambo, so you will have knots and blemishes. is was supplied to aid in the bending for beginners.
e. have you checked tomicks excellent official build diary? he covers all the faults, and is very helpful in the build itself.
f. And finally,have you considered putting up some pics so we can judge what needs to be done to bring it up to something that you will be proud of, this model and ship modelling in general has a very sharp learning curve, weither your young or older.we all have to learn new skills. k.
Current builds: SotS, USS Consitution, San Felipe, D51 loco, HMS Surprise, RB7, Arab Dhow, Jotika HMS Victory
Completed builds: HMS Pickel, Thermopylae, Mississipi river boat, Mary Rose, Cutty Sark, San Francisco II, HMS Victory x5, Titanic Lifeboat, Panart HMS Victory Launch, Hachette Titanic, Virginia Schooner, Endeavour Longboat.

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Blev
#10 Posted : 28 July 2013 21:40:17

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A. you are working with wood and not brass.

Thank you but I'm already aware of that as I've mentioned in #5.

B. wood will shrink and warp with changes in the atmosphere.

Thank you but that was why I was removing the planks from their wrapping. And that point raises another concern as in :- unless the bamboo planks were cut in 98% humidity in a factory in Jakarta, it's entirely possible that any changes in the atmosphere will make the warp worse.

c. as you haven't built a jig are you not surprised that the keel is banana shaped?

Aren't I using a jig? And the keel isn't banana shaped, the front piece of the keel was. If the keel was banana shaped then the stern deck extension wouldn't be offset laterally, it would have an angled gap between it and the decking. It appears that the rear piece of the keel is warped vertically and the sanding undertaken during construction has part hidden the defect - it has flattened out the deck extension but left the offset. The photo in the magazine is far better than I can take.

d. the planking is bambo, so you will have knots and blemishes. is was supplied to aid in the bending for beginners.

So all the knots, blemishes and warping are normal?

e. have you checked tomicks excellent official build diary? he covers all the faults, and is very helpful in the build itself.

Yes, I have.

f. And finally,have you considered putting up some pics so we can judge what needs to be done to bring it up to something that you will be proud of, this model and ship modelling in general has a very sharp learning curve, weither your young or older.we all have to learn new skills.

Unfortunately my camera is unavailable. And I have yet to come across the common misnomer of a "steep learning curve"*, what I do lack are experience in standards of materials and knowledge of the nautical terms used - and the second one is a matter of reading.

B

* A "steep learning curve" is one where lots of stuff can be learnt in a short time. On the other hand, a "shallow learning curve" should be feared.
karl1113
#11 Posted : 28 July 2013 22:50:56

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sorry to have bothered you.
Current builds: SotS, USS Consitution, San Felipe, D51 loco, HMS Surprise, RB7, Arab Dhow, Jotika HMS Victory
Completed builds: HMS Pickel, Thermopylae, Mississipi river boat, Mary Rose, Cutty Sark, San Francisco II, HMS Victory x5, Titanic Lifeboat, Panart HMS Victory Launch, Hachette Titanic, Virginia Schooner, Endeavour Longboat.

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Captain David
#12 Posted : 29 July 2013 10:38:36

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Can I add my two pence worth, Blev?
I am at an early stage, like you, having just received issues 22-25.

First, your issue with the stern deck extension.
I found, as you have, that this will not fit correctly. Lengthening the slots in this piece gives you the leeway to glue it in centrally. Otherwise, it puts a strain on the no. 49 pieces which will not glue flat to the keel. My build diary shows this.

Second, the bamboo - quality and quantity.
Yes, many of the pieces contain knots/nodes.
Some of them lie flat, some cause a waviness in the planks.
I agree with you, that you need to avoid using the knots where possible, by selecting planks where the knots will be cut away with the waste.
This is especially important in the first five rows that you place. These cover the area where you will later be cutting gunports. Knots here might make the hole-cutting difficult.
Being a fussy person with offcuts and waste, I have selected planks where the knot will only just fall outside the plank that I want, so the offcut does not have a knot in the middle, but at one end where it can be cut off - leaving the longest possible good offcut.
Offcuts come in very useful later on for infills etc.
Check out issue 46 in the official build diary - a whole pack of 22 planks, all to be cut to 47mm lengths.
The total amount supplied will be 352 planks. This is 16 packs of 22: issues 17-21, 23-28, 31-34, 46.
I reckon you will need 241 for the lower planking - from the middle deck (where you start planking) down to the keel. 36 layers x 3 planks x 2 sides.
Later on, you will add 8 rows above that deck, using 40 planks: 8 rows x 2.5 planks x 2 sides.
Then a few for the stern and the upper works, say another 20.
Total, about 300.

Third, your issue about a bend in the keel.
I was lucky to have good straight bits and did not use a keel jig.
If you have a slight bend, please do not use infills at this stage as they will set the keel solid. Fit the first deck and let it pull the keel into line. The rib slots are cut perfectly in the deck - do not enlarge them and they will do the straightening for you.
My method was then to let the second deck perform the same action, pulling the ribs straight a bit higher up. If you do this, don't glue the stringers in place to the ribs, or again they will set any fault solid. My build diary shows this too.
At this point, you could add balsa infills if you want. I didn't.
Of course, if your keel pieces are too bad, you can ask for free replacements.


Blev
#13 Posted : 30 July 2013 00:49:34

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Thanks for all that info.

Now I don't mind all the sanding, bevelling, tapering, glueing, drilling, pinning, unpinning, filling and final sanding but it's the thought of all that hot water and flattening and waiting for it to dry that's putting me off. Now I read somewhere on the DeAg site about substituting another wood for bamboo so that could be an option. Just looking at the Cornwall Model Boats site, they're selling 5mm * 2mm lime strips for 44p a metre strip. So, assuming 300 strips at 300mm required ....

1m has 3 * 300mm

= 300/3 = 100 lime strips required = 100 * 0.44 = £44 for a complete bamboo replacement. Which isn't much in the general scheme of things - particularly if it saves work.

So - would there be any problems in using lime planking? For example :- Does it come as blemished as the bamboo and therefore be a waste of money? Is it easier or harder to work?

Assuming there aren't any pitfalls in this option, does anybody know of any alternative suppliers please?

As for the offset, I'm thinking that it's just going to be an expansion of the expected sanding and filling programme for the frames. I've yet to fit the rear superstructure and that, without any sanding or filing, is a very sloppy fit and I suspect that will be a bigger problem to get square.

Again, many thanks.

B
NMBROOK
#14 Posted : 30 July 2013 01:15:44

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Hi Blev
If you don't mind paying,then lime first planking will make the job 100 times easier.It will come straight and shouldn't have any knots.I didn't even unrap the bamboo I got.Another problem with bamboo is it won't bend into a smooth curve if there is a knot or node in the bend.Another good thing about using the lime is you can fit it in full lengths,avoiding any kinks around the joints.Cutting the gunports will be easier and you should only have to predrill for pins when you have a narrow taper.I did mine in 5x2mm lime and didn't have to predrill any pin holes.As regards price,for limewood,everywhere is the same give or take a penny or two.
Rgds Nigel
Blev
#15 Posted : 30 July 2013 11:18:57

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Thanks for that.

So no there's no real argument about it then, better job all round. It's time to raid the piggy bank and order 100m of limewood planking. Now that does sound a lot - 100m.

Thanks.

B
jase
#16 Posted : 30 July 2013 14:01:25

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Hi Bev,

you have an interesting thread any chance of you putting som pics in it so as to illustright your points and chosen solutions.

will be watching with interest

P.S. nice to be chatting with a local BigGrin
“Whenever you find yourself on the side of the majority, it is time to pause and reflect.”
-Mark Twain
Blev
#17 Posted : 02 August 2013 16:27:25

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Right then - limewood planking arrived today.

First impression is that it is a far superior product.

Colour - it's slightly lighter than the bamboo.
Knots - are a rarity. There are some but mebbe only one in 10m and no loss of material or kink associated with it.
Straightness - the lime has no warp and fewer and smaller bends in it and it's 1m long, not 300mm so that's a big improvement.
Corners - The corners on the lime are sharp as opposed to the bamboo which are rounded. I suspect it'll be easier to put a bevel on it and to get full body contact.

If it's easy to bend and work - proper job.

Meanwhile I'm starting to think about giving the constructed hull a good soaking to break it down and try (again) to get rid of any twists and then rebuild. It's only a matter of more time and glue and I've got plenty of both.

B
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