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>> Home > Tags > hull

hull
hull
Fitting the side skins. by robbob Fleet Admiral!   Posted: 2 hours ago
The side skins are made from 1.5mm ply and require a slight curve towards the bow and I found that this is best achieved by gently warming with a heat gun, which seems to relax the glue between the laminations, so that when bent to a gentle curve and allowed to cool will set the shape very easily. The skins are supplied are slightly oversize and when the skins have been bent they can be roughly clamped to the hull and then marked for trimming, also while the skin is clamped in place the positions of the bulkhead formers can be marked on the skin. Back on the bench the skins were trimmed with a craft knife (with a fresh blade) and then drilled with a 1mm bit to allow pinning through into the formers and strakes. Aliphatic glue was applied to the hull formers and strakes and the skin positioned so that the drilled holes were in correct alignment with the formers and then clamped and pinned in place. Because the skin was pre-formed to the hull shape the clamps and pins are not under much tension and the hull was set aside while the glue set. When the port skin had fully set overnight, the pins and clamps were removed and the skin was finished with a plane to remove the excess down to the strakes and the F1 former at the bow and the sanding ‘plate’ used to finish it all off. Where the side skins meet at the prow there needs to be a wide flat area for the external keel to butt to and so the trimming and sanding there will be done at a later stage before the bow blocks are fitted and carved. The process was repeated for the starboard side skin and while the glue was setting I gave some thought to a means of concealing some of the wiring that needs to run the length of the hull 🤔.

Ship rudders by Toby Lieutenant   Posted: 8 hours ago
Almost there. Have to turn some hinge pins and seal about the rudder access in the hull. Then to work out best method of rc linkage from rudder to servo. T

Modern electrics by deltaman Petty Officer   Posted: 1 day ago
Hi all, Not been araound for awhile as I have been playing with aircraft as well, I have however found time to scratch build a Fairy Huntsman which I now want to upgrade to modern electrics, a brushless motor and esc etc, should I avoid lipo's due to the heat issues or can I use them ok. The hull is 42 inches long any suggestions on motor size would be appreciated, also esc size, the boat seems a bi on the heavy side. Any thoughts would be appreciated.

Hull sprayed by Dick Chief Petty Officer   Posted: 1 day ago
My son has finished filling sanding priming then spraying in 2 pack. See photo smashing job, over the moon.l

Stern & keel formers by rolfman2000 Fleet Admiral!   Posted: 3 days ago
As Doug has said, thanks for some excellent tips and tricks. The hull is coming along nicely now, and I will assume that skinning is not far away now. Keeping my fingers crossed for one last update before Christmas. Thanks very much Robbob. Looking forward to the next chapter. Best wishes, Dave W 😊

Stern & keel formers by mturpin013 Fleet Admiral!   Posted: 3 days ago
I have found as you have that gluing your abrasive paper to a wooden block is far better than wrapping and making sure all the bulkheads and other skin supports are at the correct angle can make a real difference to the line of the hull, only noticeable when looking down the length of the hull when painted and that's too late to change things. I also make a number of different shaped sanding blocks/sticks down to using the coffee sticks with abrasives stuck to then for getting into difficult areas.

Stern & keel formers by robbob Fleet Admiral!   Posted: 3 days ago
Various small pieces, S8 & S9, are added to bulkhead former F7 that create the curvature of the stern which in turn support the outer skin, in addition there are some pieces that are fixed either side of the keel as laminations to add strength and to support the bottom skins where they meet the keel. The prop shaft has yet to be delivered so I used a length of 8mm plastic rod temporarily in its place so that I could fit the keel laminations K5 around the shaft. I chose to fit additional pieces on either side of the keel between the bulkhead formers to support the bottom skins and some extra pieces of balsa were fitted at the stern to support the outer skin, and in a similar fashion some extra pieces fitted either side of the keel formers at the prow. Once all these pieces were firmly set they need to sanded to the profile of the hull, and this is best done with abrasive paper around a sanding block. I made a sanding ‘plate’ from some 6mm MDF with a sheet of 120 grit aluminium oxide abrasive paper glued to it to form a perfectly flat sanding surface and this was used to chamfer and flatten the bulkhead, keel and chine formers so that the outer skins would lay as flat as possible across them. I also fitted some pieces of ply under the centre section of the box around the keel to reinforce the area under where the motor mount will be as I don’t think the balsa base of the ‘box’ will take screws firmly. The next step will be to fit the side skins and then the hull will really take shape.

Anteno 2 tug by RNinMunich Fleet Admiral!   Posted: 4 days ago
Lucky man to have access to a full size booth Dick👍 Your hull looks very good, even though it's a bit of a shame to cover up your super woodwork! I used 2pack on my Sea Scout as well😊 Then polished with fine (anti-hologram) cutting polish. The lacquer gave her a beautiful hard, smooth finish. And is UV resistant as well, which is good for the deck varnish😉 have a great Christmas, cheers, Doug 😎

Anteno 2 tug by Dick Chief Petty Officer   Posted: 4 days ago
Point take Doug,I will get around to venting it. In the meantime my son has a full size spray booth,car size, and is now spraying my hull in 2pack Merry Christmas Dick

Pretend deck planking by RNinMunich Fleet Admiral!   Posted: 4 days ago
Hi Steve, What went wrong? 😲 1. Drawing on deck planking, i.e. on a veneer or thin ply- Why/how did it go wrong? Surely since the planks are all 'parallel curves' all you need to do is make a curve template in plasticard from the plan. Then at a few strategic points along the plank length mark the widths of the planks. Set the template along these points and 'Bob's yer Uncle - Fanny's yer Aunt' 😉 Mind you; doing it that way the 'curious grain of the planks' would betray the fiddle🤔 2. 'what type of strip wood - Any very close grained type. Possible source- http://www.slecuk.com/index.html 3. How to glue it!? Any thin, spreadable waterproof wood glue! 4. Gap? Max 0.5mm perhaps. Ca 10 to 1 ratio. 5. 'How do you secure the bent planks whilst the glue dries? Modelling pins at strategic points along the plank. Assumes planks are pre-shaped by steaming!! See 6. 😉 6. 'Do I need to steam the planks? - YES! As mentioned above; make a template defining the curve required. From this make a jig of ca 5mm x 10mm in which you can set the steamed planks to cool and set to the shape required. To allow for the so called 'spring back' make the jig with a slightly sharper curve than the actual deck curve. When fitting the planks to the deck it's easier to 'push them out' than to try to increase the curvature. Finally; mark on the deck base the plank widths at strategic points along the plank length as alignment points. Glue planks alternately left/right (OK port/starboard😉) using modelling pins to hold in place until the glue is fully cured. For the 'gaps' There are various solutions in Build Blogs on this site. One that I like is the use of thin black card. When the whole deck is planked and properly cured sand lightly (ca 240 grit). 7. 'weathered teak' there are various suppliers of teak stain and also deck weathering stains; e.g. Jotika stain, Lifecolor Washes for Hulls and Wooden Decks, set part no. LP04, which includes Wooden deck darkener and Shadower, amongst other useful weathering pigments. http://www.astromodel.it Google Lifecolor and you'll surely find some UK distributors. Enough answers for enough questions!? 😁 Hope this provides some inspiration, Cheers, Doug 😎

Anteno 2 tug by RNinMunich Fleet Admiral!   Posted: 4 days ago
Hi Dick, To 2nd plank or not to plank - your choice but regarding the improvised spray-booth - Your storage container, neat idea, may prevent you from colouring the immediate surroundings, but it won't stop the vapours, explosive fumes and overspray dust from rebounding back into the room. 😡 Ask me how I know 🤔 To prevent that your storage container needs an extractor fan coupled to a vent pipe leading to the great outside world! DIY nuts can construct such using the guts of an old vacuum cleaner. I was about to try that when I stumbled across a booth with extractor and vent pipe at a reasonable price on the German Conrad site. https://www.conrad.de/ Have used it to good effect on my Sea Scout restoration. 😊 In the attached pic one can see it behind the freshly sprayed hull of my Sea Scout. To the left is an additional filter/fan to absorb any overspray that flies out of the little booth. I also use that when soldering with my ancient lead based multi-core solder. Happy modelling - but stay safe Guys 😉 Cheers, Doug 😎

Scratch built yacht. by ChrisG Sub-Lieutenant   Posted: 6 days ago
Hello Joe Many thanks for the reply and the offer of help. I have built several model boats of different styles and also a 'Bella' yacht kit from Aeronaut. I prefer building plank on frame and find it quite therapeutic especially as I love wood. My next step is to build a beautiful sailing boat hull and the 1mtr style would suit I think. I am not planning to race the boat and might even not rig it but just have the pleasure of the build. If you can help I would be obliged best regards Chris G

Marian Belle' by GaryLCoupland Chief Petty Officer   Posted: 6 days ago
The TVR1 BB steam engine plant running in prior to being installed in a Mobile Marine hull.

Upper & Lower Chines by robbob Fleet Admiral!   Posted: 8 days ago
Hi Doug. All credit due to Phil Smith and his original design for that actually... Hi rolfman2000 I hope SWMBO is good to her word as I happen to know that the kit is now available to buy from Vintage Model Works 😊👍 I'm told the price is £185.00 + P&P and there's also an optional stand/carrying box which is CNC cut to the hull profile for an additional £10.00 That sounds a bit of a bargain too. Contact Mike Cummings at VMW for more information: http://www.vintagemodelworks.co.uk/ I'm hoping to have the boat in an advanced state of completion in time for the London Model Engineering Exhibition at 'Ally Pally' in January 2019. It will be on the St.Albans & District Model Engineering Society club stand alongside my RAF Crash Tender. Rob.

Painting by MouldBuilder Admiral   Posted: 9 days ago
Well it is nearly Christmas again and time to go to my testing river in Hungary. This boat will not be ready but I hope to complete the Police Launch this trip. I have started the painting process on the Pilot Boat. Very early on I had a dilemma. When is the correct time to paint. As I generally use rattle cans and an airbrush, I think it best to paint prior to major assembly. I am still not sure if this is the correct approach but I am concerned with masking an assembled unit. I hope that the glue does not ruin the paint finish when I put it together. It is a bit difficult spray painting this time of the year due to the fumes. I spray in the garage with the door open but I am always concerned about air temperature. The finish looks good so perhaps this is not of great concern yet.🤓 I will now leave the hull to dry prior to applying the lacquer. I have completed the insides of the bridge and rear room and will start to assemble this part next prior to masking and painting the outside walls. I have bought a roll of special low tack clear film to protect the windows and frames. I hope this works. I have used the same film to cover the instrument panel which so far seems to be staying on well. I think that these models by AeroNaut are really well designed. It still amazes me that the model looks so natural even though it is made generally from flat thin sheets.😉 I will attach the deck next and then start on the main structures. Happy Christmas to all.