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Everything posted by vossiewulf
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Kathryn, pretty clearly no one has an idea as to what is happening here. Usually white patches and blushing is moisture being trapped under the finish, but that is seen with film finishes, not oil. The second major possibility is silicone, as people will use paste waxes or dusting products that include silicone and once silicone is on a piece of wood you'll never get it off no matter what you do. But again, that usually impacts film finishes, causing what are called fish eyes. I don't really know what silicone would do reacting with tung oil, so that could be your problem.
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Filler Blocks
vossiewulf replied to olopa67's topic in Building, Framing, Planking and plating a ships hull and deck
That will work fine, however Drazen's problem had little to do with his filler blocks and everything to do with him leaving the model in a basement where it swung from 20% to 80% humidity. That will tear apart just about anything made out of wood, if you put a $4000 acoustic guitar into those conditions it would suffer damage and if you put a Stradivarius there you better have good lawyers because someone is going to be suing you for lots and lots of money. You'll have more success protecting your model by controlling the environment than you will by reinforcing it at every step against movement if you live in a harsh environment like that. You don't want any significant movement if you want it to survive, reinforcement just delays the inevitable if it's put through regular significant humidity swings. This is true of anything precision made out of wood. -
Filler Blocks
vossiewulf replied to olopa67's topic in Building, Framing, Planking and plating a ships hull and deck
I think there are considerable advantages in planking in terms of no flat spots or dips that have to be addressed when you fill all the bulkheads with balsa, and the only downside is the time required to add the balsa pieces. I'll be doing exactly that with any build where it's possible to do so moving forward. -
Oops, sorry, forgot to say. Easier way is drilling a hole in each end and mounting it on a mandrel first on one end, then the other. At least that seems a much better way, I'm about to try, or was until work called and now I have to join another weekend conference call for the next couple hours. Sigh.
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This was about as easy as trying to stuff a live octopus into a beer can. But that's partially because I was being stupid about how to hold the buoy, just at the end of an arduous battle with this one I facepalmed when I realized there was an easier way. Also, I used .012" line as I thought .008" would be too thin. But in retrospect I was wrong, I should have used .008" for the buoy rigging and .012" for the buoy lines.
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Danny, you might want to change the title of the thread as the box says those are one LF and one FR Mk.IXs, not Mk.IVs. Mk.IVs would have been interesting as there weren't many, and in fact there were two Mk.IVs, one was the original R.R. Griffon-engined Spitfire, replacing the Merlin engine used in most Spitfires, it was basically a test aircraft and was later redesignated the Mk.XX to avoid confusion with the photo-reconnaissance Merlin-engined PR Mk.IV. The LF Mk.IX was by far the most common Mk.IX, being a dedicated fighter using a Merlin 61 with a two-stage supercharger and increased horsepower that gave it a considerable boost in performance over the previous primary fighter version, the Mk.Vb, which was clearly coming out on the short end in combat with the German's newly-released early FW-190As in 1942. The LF indicated an aircraft rated for low and medium altitudes, only a fairly small number of HF versions were built with a different Merlin with superchargers designed for best performance at higher altitudes. By the time of the Mk.IX, basically all aircraft came with the C or Universal wing, which allowed armaments of 8 .303" Brownings, 2 Hispano-Suiza 20mm cannon and 4 .303" Brownings, or 4 Hispano 20mms. This was opposed to the early A wing that just allowed the 8 Brownings, and the B wing which just allowed four Hispano cannon. However, the majority of LF Mk.IXs flew with an armament of 2 x 20mm Hispanos and 4 x .303" Brownings. The Brownings were obsolete at the beginning of the war, and were almost useless in combat unless you were at very close range against a fighter target. Using them against say a Ju-88 was like trying to take down an NFL running back by throwing gravel at him. The Hispanos on the other hand, like all other good 20mm guns in the war (best is a tie between the Hispano and the Mauser MG151/20) was devastatingly effective. Whereas those four Brownings put .303" holes in aircraft, a typical 20mm hit would blow a hole 18" across in aircraft structures, since they were explosive rounds. You don't have to blow many 18" holes in airplanes before important bits start breaking and falling off. The downside was ammo, whereas it was easy to carry 500 rounds per gun of .303" ammo, the early Spitfires flew with only 60rpg for the cannons, later increased to 120rpg when they converted the Hispano from drum to belt feed. Also we know the front aircraft is after D-Day, because the black and white stripes on the wings and fuselage were added to all low-flying allied aircraft prior to the invasion to help ground gunners distinguish friend from foe. There were two photo recon versions, the PR and the FR, the latter is the all-gray version you have. The PR was a dedicated recon aircraft, with all armament removed and two cameras shooting straight down added, it was mostly used from higher altitudes. The FR version retained its armament and had a single oblique-shooting camera in the rear fuselage, these were used for very low altitude high speed recon flights that I'm absolutely sure that I wouldn't have enjoyed at all had I been chosen to fly them.
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There are a couple hundred pitfalls you can drop into that are basically invisible until you've fallen into them, so don't get down, you fix whatever you need to and move on a bit wiser in the ways of building ships. When it comes to gluing a piece back that has broken off, drill a small hole on each side and glue in a small dowel at the same time you glue the two pieces back together. It will make the joint much stronger. So one thing you definitely need is a set of small drill bits and a pin vise to hold them for drilling holes.
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- 18th century longboat
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Jolene, as you can see here, sanding those planks once in place is going to be tricky. In those cases, it's best to fully sand and prepare the parts before installing them, doing so at least considerably reduces the need to sand into corners and around things. Also you can level a wood surface like that by scraping with a sharp Xacto blade, often faster than sanding. That said, balance what I am saying against how much those planks will really be seen.
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Unless you speak Russian, skip ahead to 4:25.
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- masterkorabel
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In modeling software this is a primary use case, as 3d objects have to be texture mapped with 2d graphics. Therefore the modeling software has to be able to project all of the surfaces onto a 2d plane, it's called unwrapping UVWs, UVW being the XYZ axes of the texture space. So if I made a model in 3DS MAX with all the planks, it would then be very easy to output all of the plank shapes into a 2D file that could be used to drive a laser. But most people will use CAD, where as described above the process is a little different, but the result is the same. So the answer is that 3D CAD/modeling applications have built in functions for several reasons that are able to take 3D shapes and project them into 2d.
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That reminds me, I need to threaten to take out a contract on Keith if he paints that mahogany.
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Horst, try Seamanship in the Age of Sail. It does a reasonably good job of explaining what everything is and how it all works.
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Yes, when painting the hull it's largely irrelevant, but it will always be relevant for the deck at least. Just something to keep in mind for the next time around.
- 38 replies
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- bluenose
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Sounds like you learned a lot with the longboat and made good use of it here, the planking is nice and smooth. I'm not sure what the instructions tell you so you may have just followed instructions, but one suggestion would be to change your planking pattern to a four-butt shift which was pretty much standard throughout the age of sail. Here you've done a two-butt shift and that makes for very visible vertical lines where half the planks are ending. Instead, you divide your plank length by four and shift the next plank by 1/4 of the plank length, next one shifted another 1/4, then one more and the fourth plank will be in the same position the first plank is in. See below.
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To me, the best choices are easy, Castello boxwood and Swiss pear, the primary deciding factor being which color you like better. Although I haven't used the latter, I've watched Kortes bending it about into noodles with steam on his Dutch boier model, and it's a preferred wood of many builders. The only downside is that both are relatively expensive. Look at Crown Timberyard.
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Thanks @popeye, @Landlubber Mike, and @BANYAN. Mike, I am having lots of choice words trying to get those baskets in the right place on the buoys, I thought making those baskets would be the hard part, noooooooo. Pat, thanks, but I am taking advantage of using fly tying line, which at least lays flat when wrapped if not being flat coming off the bobbin. It's specifically designed to make it easy to do a smooth wrapping like that, fly tyers are at least as nutty about their things as ship modelers are about ships. If you find a place that needs small-scale serving, give it a spin, costs like $4USD a bobbin. I'm using 6/0 to do the basic serving of the line, and 14/0 for wrapping the loop splices, and I bought some 3/0 to serve larger things like stays.
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Plank Bender....
vossiewulf replied to dvlp47's topic in Building, Framing, Planking and plating a ships hull and deck
Or use steam, you can even do it in the microwave, just wrap the wood in wet paper towels and nuke it on high. Then pin around a form and let cool.
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