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    Mantua Bruma - with possible conversion to sail
    18 Posts ยท 12 Followers ยท 31 Photos ยท 155 Likes
    Began 1 year ago by
    Lieutenant
    United Kingdom
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    Latest Post 29 days ago by
    Lieutenant
    United Kingdom
    Most recent posts shown first   (Show Oldest First) (Print Booklet)
    ๐Ÿ“ 1st coat of primer applied
    29 days ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 32 Views ยท 6 Likes ยท 2 Comments
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    ๐Ÿ’ฌ Add Comment
    Finally managed to complete the double layer of planking in limewood on the Mantua Bruma which is a plank on frame hull. I then did some filling and sanding before applying two coats of sanding sealer. Having 'chewed over' all of discussions about fibre glassing the hull I 'chickened out' and instead just applied a coat of Z-epoxy 2 part finishing resin. Another sand down with 120 grade paper (as advised on the bottles) before applying a Rustins primer & undercoat. This has now shown up some imperfections so I plan to remove these with Holts Knifing putty which is designed to fill small scratches and paint chips. I need to fit the bulwarks but I'm not sure about how to cut a 2mm 'slot' along the limewood planks. The slot is from around 6" from the bow to about 6" from the stern. I've tried a steal ruler and modelling knife but it still seems to follow along the grain of the wood on these 6mm wide limewood strips. Any suggestions gratefully received.

    ๐Ÿ’ฌ Re: 1st coat of primer applied
    28 days ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 29 Views ยท 3 Likes
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    Hi Duncan, I cut the hull with a simple cutter.
    They recommended electric cutters to do it but I didn't trust them, the work was too delicate.
    To follow the line you want and not the grain you can use a steel ruler, or a mark (pencil, marker, tape, etc. etc.) the important thing is that the first grooves are light, then gradually you can sink and push more because the blade will not take other paths.

    "Having 'chewed over' all of discussions about fiber glassing the hull I 'chickened out' and instead just applied a coat of Z-epoxy 2 part finishing resin."
    Excellent decision.
    ๐Ÿ’ฌ Re: 1st coat of primer applied
    29 days ago by ๐Ÿ‡จ๐Ÿ‡ฆ RossM ( Lieutenant Commander)
    โœง 27 Views ยท 4 Likes
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    CUTTING THROUGH LIMEWOOD

    When I was cutting through 3mm pine stock, I found a box cutter had a better grip for control. I would score it 3 to 5 times cutting in about .75mm per stroke
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    ๐Ÿ“ 1st layer completed at last
    3 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 63 Views ยท 9 Likes
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    Finally got some time to work on my model after working on other jobs that needed doing around the home and also a holiday down the Rhine river on a cruise. Weather was good today which enabled me to do the sanding outside and save the mess of dust everywhere in doors! Hopefully the hull is now smooth enough for the second layer of planking. Fingers crossed not too many more interruptions to the build program ! I used for the first time sanding sponges which seemed to work very well. I also did the sanding in a large box lid which kept most of the sanding residue in one place. Unfortunately when I first started sanding I forgot to put the yellow foam supports under the hull and as a consequence it has snapped the plastic tube which will carry the mainsheet off at deck level. It was originally designed to go through the cabin deck which also had the secondary purpose of holding the removable cabin in place. Hey Ho - one step forward and two back!!๐Ÿ˜

    ๐Ÿ“ 1st layer nearing completion
    6 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 95 Views ยท 11 Likes ยท 5 Comments
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    Nearly there with the 1st layer of planking. Been a bit of a challenge especially around the stern. Once the remaining planks have been added I will shape bow and stern, fill between planks and then sand back before starting the second layer. Having planked from the deck towards the waterline I decided to because of the hull curvature the best way to complete the the planking was to then start from the keel and work towards the completed side planking. It seems to have worked out as a good method. Hope this might help future builders of this model. ๐Ÿ˜Š

    ๐Ÿ’ฌ Re: 1st layer nearing completion
    6 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 64 Views ยท 4 Likes
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    Hi Duncan I understand you. It's annoying to interrupt work.
    I don't have grandchildren, but many other reasons prevent me from continuing the model quickly.
    Tonight, if I can, I'll paint the cannons.

    There is another peculiarity in your work.
    You've built the planking around the propeller shafts. I, however, prefer to complete the planking and then drill it.
    The differences in model building techniques are always fascinating and I really enjoy looking at other methods.
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    ๐Ÿ’ฌ Re: 1st layer nearing completion
    6 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 64 Views ยท 4 Likes
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    Hi Len, very interesting observation.
    I would very much like to discuss this topic with you and the other modelers but if the discussion gets too long, as it is likely to happen, we could disturb Duncan's work.
    For this reason I prefer to open a separate topic and in this topic continue to comment on the work of Duncan's Bruma.
    ๐Ÿ’ฌ Re: 1st layer nearing completion
    6 months ago by ๐Ÿ‡บ๐Ÿ‡ธ Len1 ( Lieutenant)
    โœง 69 Views ยท 3 Likes
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    Just a thought on double planking on real ships is that it adds so much weight to the vessel and that could reduce its load carrying capability and therefore revenue. Maybe double planking on warships would make sense.
    This just conjecture on my part and not based on any facts.
    Len
    ๐Ÿ’ฌ Re: 1st layer nearing completion
    6 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 84 Views ยท 6 Likes
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    Hi Alessandro, Building has come to a halt whilst the grand children are staying with us. Two reasons. 1) I have had to remove everything from their bedroom/modelling room and 2) they keep me that busy I have no time!!
    The only progress is the 1st layer of planking is complete. Next stage is filling and sanding. I want to do the sanding outside to avoid dust in the house so that will also be weather dependant! Will update the build blog before the second layer starts.๐Ÿ˜Š
    ๐Ÿ’ฌ Re: 1st layer nearing completion
    6 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 73 Views ยท 3 Likes
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    Hi Duncan, I haven't seen any posts on this forum for a while.

    I'm glad you've almost finished the first planking and your method is very interesting.
    Even though I have always started from the top down to the keel, I think yours could be excellent, I will take it into consideration for next time.




    P.S.
    No, I've never heard of "double planking" for real ships.
    Maybe it will even have been done on some real boats. Why not. I ignore it.
    I am sure that for all (and I mean all) the scale models I have seen to date, in person or on the internet, made with double planking, no real ship (and I mean none) had double planking.

    In other words:
    modeling = double planking is always or almost always used even when real models do not require it.
    real ships = always or almost always single planking.
    This is why I can say that double planking is above all a modeling technique.
    ๐Ÿ“ Pond Noodle buoyancy
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 100 Views ยท 10 Likes ยท 2 Comments
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    Planking slowly coming along. Attaching each 7mm strip of limewood with Aliphatic glue. Before fitting I'm spreading the glue the entire length of the strip to waterproof it. I've decided to put strips of Pond Noodle under the flooring to stop any build up of water and also to provide buoyancy if required - hopefully not!! It also provides a suitable scratch free support for the hull when turned upside down as the deck is already complete. It is getting more tricky as I'm now encountering curves in two directions. I'm using a Model craft electric plank bending tool which certainly helps. Unfortunately it is rather time consuming and then I keep having recurring thoughts that I need to do it all again for the second layer! Hopefully with a flat surface to glue to it will be easier - wishful thinking! ๐Ÿ˜Š Happy Easter to everyone. Cheers D

    ๐Ÿ’ฌ Re: Pond Noodle buoyancy
    6 months ago by ๐Ÿ‡บ๐Ÿ‡ธ LewZ ( Rear Admiral)
    โœง 90 Views ยท 4 Likes
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    SPQR - Contrary to your statement, I supposed you never heard of "Double Planking" on real boats?
    Lew
    Florida, USA
    ๐Ÿ’ฌ Re: Pond Noodle buoyancy
    7 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 96 Views ยท 3 Likes
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    Certainly Duncan, it's as you say: the second planking (which only exists in the modeling sector) is usually always easier, because there is already a surface on which to attach the wooden strips.
    ๐Ÿ“ Planking
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 117 Views ยท 15 Likes ยท 3 Comments
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    Hi Doug. No the planking will be in the same lateral plane. I will arrange to have an overlap on the joints on the first layer of planking. When I built the Amati Italian Roundabout (Riva Aquarama) the limewood planks for the first layer were 7 mm wide but the mahogany planks for the second layer were 8mm so you automatically got an overlap! Great idea!

    ๐Ÿ’ฌ Re: Planking
    7 months ago by ๐Ÿ‡ง๐Ÿ‡ช hermank ( Commodore)
    โœง 107 Views ยท 3 Likes
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    DUNCAN P
    what a beauty!!!!!!!!!!!!!
    i wish i had the real one!๐Ÿ‘๐Ÿ‘๐Ÿ‘
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    ๐Ÿ’ฌ Re: Planking
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง ChrisG ( Commander)
    โœง 108 Views ยท 5 Likes
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    Hello Duncan
    As expected wonderful workmanship from you it is always a pleasure and interesting to note the changes in methods that you often use. I must admit putting the roof on before the sides has me head scratching but on reflection looks a good idea although brave.
    I continue to look longingly at my build but whilst I am keeping the NHS busy I find it hard to get into the garage where I really need to be to continue.
    Soon I hope regards to all ChrisG
    ๐Ÿ’ฌ Re: Planking
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง roycv ( Vice Admiral)
    โœง 111 Views ยท 5 Likes
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    Hi I was contemplating starting with diagonal planking and then the fore and aft.
    I did it for a 40 inch sail boat and it worked well. With the diagonal planking (45 degrees) you do not try and twist a plank to fit just lay it straight and all the gaps are straight line triangles and easily cut to fit.

    The Bruma kit I have has half and half balsa and lime, not easy to tell apart! Mine were all mixed up!
    I am dying to start but felt I had to finish another boat which has been hanging about too long, first. I have got to the part which made me stop in the first place, with trying to solve the problem of a butt joint of the bulwarks at the bow which are sloped etc. The deck already finished so have to be careful.

    I decided that it was best to leave easily disposable things behind me when I kick the bucket rather than part started boats who no-one wants to know!
    So I am following the Bruma build with interest.

    The later 10 page instructions suggest using a hand held steam cleaner for clothes to persuade the planks into position, my daughter said I could use hers as she rarely uses it.

    But I shall be using aliphatic (yellow) glue which is waterproof anyway. I found that on an earlier boat which I had to rectify mistakes I had made that joints that had been held together with spring loaded clips easily came apart while the ones that were clamped with a screw tore the wood apart.

    Regards and keep the pictures coming
    Roy
    ๐Ÿ“ Planking started
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 116 Views ยท 15 Likes ยท 3 Comments
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    First few planks attached. Gosh a lot to go and then when finished start again with the second layer! Using Amati planking clamps and also Micromart screw clamps. The latter are expensive to buy in the UK but make the job easier. I'm steeping the planks in boiling water and then using my electric plank bender to form the shape. The Amati planking clamps take a bit of time to assemble so be aware if you are going to buy some! The spring clips help to keep the edges of planks together. I'm coating the inside of the planks completely with Aliphatic glue to waterproof them. Some internal parts of the planks will be impossible to get to later.๐Ÿ˜Š

    ๐Ÿ’ฌ Re: Planking started
    7 months ago by ๐Ÿ‡ฉ๐Ÿ‡ช RNinMunich ( Fleet Admiral)
    โœง 114 Views ยท 7 Likes
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    Only when qualified as Full Members Ross.
    (By special arrangement with the Site Shop๐Ÿ˜. TBA.)
    Thus far we have as Full Plankers:-
    Graham93, Robbob, Mturpin, Dave 976 and JBkiwi.
    Further nominees will be gratefully received and considered.
    Nominations please to FLEET. Care of RNinMunich, MBNavy Bavarian HQ, Isar Flotilla, Munich.
    Both hull and deck Plankers will be considered.
    FLEET, ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Planking started
    7 months ago by ๐Ÿ‡ฉ๐Ÿ‡ช RNinMunich ( Fleet Admiral)
    โœง 114 Views ยท 3 Likes
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    Good start Duncan๐Ÿ‘
    As a 'Novice Planker' I'm following with interest.
    Can't wait to see the second layer. Will it be diagonal?
    What wood will be used?
    Cheers, Doug๐Ÿ˜Ž
    ๐Ÿ’ฌ Re: Planking started
    7 months ago by ๐Ÿ‡จ๐Ÿ‡ฆ RossM ( Lieutenant Commander)
    โœง 112 Views ยท 5 Likes
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    Do we all get our stuff from the PLANKER'S GUILD๐Ÿ˜‰?
    ๐Ÿ“ Link for available sail winches
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 134 Views ยท 5 Likes ยท 1 Comment
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    ๐Ÿ’ฌ Add Comment
    Sorry here is the link from my earlier post.



    https://www.componentshop.co.uk/55g-sail-winch-servo-4-turns-end-to-end-travel.h
    ๐Ÿ’ฌ Re: Link for available sail winches
    7 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 135 Views ยท 1 Like
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    Thanks so much Duncan.
    ๐Ÿ“ Available Sail winch
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 134 Views ยท 5 Likes
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    ๐Ÿ’ฌ Add Comment
    Hi Alessandro,
    The Component Shop based in the Wales UK has a number of similar sail winches in stock. The one similar to mine with 4 turns - but has metal gears is only ยฃ14.99. They have others available with 1.5 to 6 turns on the drum.
    Here is the link and when I just looked they are in stock! It is a very good shop for anything to do with models especially electrical items.
    Let us know how you get on. Cheers Duncan.๐Ÿ˜Š

    ๐Ÿ“ Winch setup
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 135 Views ยท 5 Likes ยท 1 Comment
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    Hi Alessandro,

    Here is the link to the winch servo that I'm using. Unfortunately they are currently out of stock of this particular model. They also sell one that is more expensive with metal gears.



    https://howesmodels.co.uk/product/4-turn-standard-size-drum-winch-servo/?mot_tci
    ๐Ÿ’ฌ Re: Winch setup
    7 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 134 Views ยท 3 Likes
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    It's strange, but this type of servomechanism is no longer on the market, even Hobby King has it in the catalog but the product is no longer available.
    I couldn't even find it on Aliexpress, maybe I'm not good at web searches.
    Anyway, thanks so much for the link, Duncan.
    ๐Ÿ“ Winch setup
    7 months ago by ๐Ÿ‡ฌ๐Ÿ‡ง DuncanP ( Lieutenant)
    โœง 138 Views ยท 5 Likes ยท 1 Comment
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    Hi Alessandro,
    In reply to your question I got the winch servo from Howes Models in the UK. It is a King Max 4 turn sail winch and it only cost ยฃ9.99!
    The reason I have done all the layout of the equipment as it is easier to plan and line up when you can see through the hull. Lining up the motors and the prop shafts is also much easier when you can see through the hull sides. In addition, fitting the plastic leader tubes and the small corner winches would have been impossible without being able to put your hands through the sides of the hull. The motors I will leave in place and cover with plastic bags for the remainder of the build. Now that I have the position of the servos I will remove these until later.
    I used a similar method when building my Riva Aquarama because once the sides are on access to the fixing of the rudders is near impossible! It worked well. I have also done a build blog of how I did the Riva model called Amati Riva Aquarama. Hope this is helpful. ๐Ÿ˜Š As you probably realise that this is not a standard build of the Mantua Bruma as I'm trying to make a version that will also carry sails rather than just be motor powered. For this reason a lot of time is pondering how to accomplish things and the small amount of space doesn't help - but it is a challenge! The build blog is also slow because I have trouble at times with painful hands - a price for getting old!! ๐Ÿ˜Š

    ๐Ÿ’ฌ Re: Winch setup
    7 months ago by ๐Ÿ‡ฎ๐Ÿ‡น AlessandroSPQR ( Vice Admiral)
    โœง 135 Views ยท 2 Likes
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    Hi Duncan, great explanations.

    Yes, of course, it was clear that you also intended to command the sails.
    This is precisely what makes the construction so interesting.
    You're doing a great job, it's definitely one of the most informative.

    As for the sail winch, do you have the link?
    Show 8 More Posts


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