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wefalck

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Everything posted by wefalck

  1. I used to use for seizings this very fine two-ply silk/nylon yarn as used for mending ladies' 'nylons'. However, in our throw-away society, no one seems to bother with mending nylons anymore, so these yarns seem to have all but disappeared from the market. The next best thing is 16/0 size fly-tying yarn. I start the seizing by pushing the free end through the space between the block and the rope, fixing it to one leg with a half-hitch. I continue with a couple of half-hitches around the splice and then wind up as many turns as necessary. The sizing is finished with a couple of half-hitches, making sure that each turn is pushed tight against the preceeding one. For securing, I prefer matt varnish. If the the rope is supposed to be tarred, I may use semi-gloss black paint instead. wefalck
  2. Pastels in black and white can also be used to good effect. Apply with bristle brush, a cotton stick ('Q-tips') or one of those small foam brushes that are used by the ladies to apply make-up. wefalck
  3. I have a 1923 textbook on ship's joinery and this recommends 2" (50 mm) for the opening and the widths of the laths. The depths of one set would be 2"-2.5" (50 mm - 75 mm) and the other only half of that: modellers commonly notch both sets in comb-fashion, while in reality smaller laths were laid into the notches. They way modellers make gratings makes them self-locking, but on the prototype both laths types would be notched into the frame that provides the locking. wefalck
  4. Of course, these are nice old-fashioned and very maritime looking tools. Would like to have one, but there is not much point investing somewhere between 50 and 100 EUR for a tool that in practices wouldn't have much use for me. A divider with lockable legs is a very useful tool for marking out equal distances and the likes and the proportionality function can be easily replaced by a vernier caliper together with a pocket calculator. For marking out equal distance along a curved line, such as along a frame for plank widths, I would prefer the paper-strip methods described by others above. It avoids the building up of errors by measuring from succeeding end-points. At the small scales I am working in the proportional dividers would also be far to clumsy. wefalck
  5. Grit from sandpaper is poison to a (metal) lathe, try to avoid using it. Seriously, machine tools are good at straight surfaces, or surfaces that are bent in only one direction. As soon as you have to deal with surfaces that are shaped in the 3D-space, you are often better off with hand-tools. Nothing is as flexible for holding parts and guiding tools as your two hands. The amount of bevelling needed is usually quite small, so that it is quickly achieved with a few strokes of a sanding stick. The movement of a sanding stick has a sort of splining function, while using a rotary sander entails the risk of digging in and ending up with a wavy edge. wefalck
  6. Bevelling is not just a cosmetic issue: if your plank closes on the surface only, but not on the inside, you will have small gap after sanding the hull … wefalck
  7. I own a couple of milling machines, but I wouldn't probably use them for bevelling planks. One needs a stable, inclineable (to set the bvelling angle) jig that can hold the narrow planks securely - a lot of work to make one to fit your milling machine and then to adjust it. The other problem is that the usual model-maker's machines may have a too short x-travel to be useful. And another problem can be that the bevelling angle is not uniform over the whole length of the plank. I would probably use a simple bulldog clip. The edges may need to be filed down to ensure that it closes nicely. You hold the plank with it and work your way along it with a sanding stick, offering the plank from time to time to the hull to check, whether the angle is correct. wefalck
  8. If it has to be white then … I would rather use a soft brush, at least for the first layer or two, to ensure that the paint gets into all those hollows. By definition, the paint from an airbrush flies on a more or less straight trajectory, so any obstacle in its way will mask the area behind; therefore, it may be difficult to spray-paint such sculpted surface adequately. To improve adherence you can paint it (after cleaning, of course) with a layer of pure acrylic (available in artists' supply shops), i.e. acrylic without any pigment. wefalck
  9. The lower picture shows the sails set for drying while the ship is at anchor. They were draped sort of random on purpose so as not to push the ship in an uniform direction. BTW, in harbour, when moored to the quai, ship often tipped the yards so that arm facing out to the harbour almost touched the rails. This reduced the risk that another ship that came adrift or didn't calculate the distance right sheered off the yards. wefalck
  10. I think all yards on one mast would be braced the same way. In fact some lines would be belayed on the same pin, so they would need to be cast loose at the same time. Also, taking in or setting sails would depend on the wind etc. and one would not want to waste time to brace the yards. Also note that yards are not braced up to the same degree, there is a certain 'twist' in them, i.e. lower yards are braced up tighter than upper ones. This has to do with the wind velocity distribution over the height profile - due to the friction over the water, the wind velocity is lower near the water; therefore, the apparent wind comes more from the front closer to the water. wefalck
  11. MDF is extensively used these days in the furniture industry and by architectural model makers. I am using it for the bread-and-butter construction of a hull. Sanded and let in with quick-sanding filler it actually gives a nice surface and I have used it as workbench back and for similar applications. I quite like the material as it has no 'direction' and doesn't splinter like plywood when sawn. Also, it doesn't warp when used properly, i.e. access of humidity from only one side. wefalck
  12. Actually, most model sails don't really look floppy or droopy enough, because the material used is far too thick and stiff - that is when there is supposed to be no wind. Billowing sails can also be made by working a wire into the seams or by making the bolt-rope from drilled-together and painted wire. wefalck
  13. I am using a fast drying varnish or lacquer to tip the ends of thread in and to secure knots. The advantage in the latter case is that with a drop of solvent you can untie knots or belaying points, if needed. The varnish can be applied to knots with a small brush or the tip of a toothpick. I also keep a small bottle with varnish handy to dunk the ends of thread in that need to be threaded through something. wefalck
  14. John Harland is not only a scholar in the thing as such, but also in the related etymology: HARLAND, J. (1985): Seamanship in the Age of Sail.- 320 p., London (Conway Maritime Press). BTW, rats (and mice) can climb up to the most impossible places - this is why large metal discs are being put half-way along mooring ropes. wefalck
  15. Actually, this thread was about surface treatment of the said materials … perhaps you better make up a new thread on your subject. Anyway, what is the size and shape of these mouldings ? With this knowledge one could perhaps make some suggestions. When annealing brass, one need to remember that it behaves the opposite way of steel: if left to cool slowly, it hardens. So one needs to cool it down quickly. wefalck
  16. Yes, it may be easy to machine, but PVC contains softeners (which is why it is soft ) that will diffuse out with time, making it brittle. That may be ok for a working model with a limited life time, but not good for 'museum'-type models. There are more durable plastics around, such as acrylic glass. wefalck
  17. Hhmm, mixing Plexiglas with epoxi resin is calling for trouble in the longer term. The curing resin will induce corrossion cracks in the Plexiglas due heat released. These cracks may develop around the cut-out ship-form in a few years probably. It is better to use same acrylic monomer from which the Plexiglas was made, or artists' acrylic gels. wefalck
  18. A wash means, as the word indicates, a layer of diluted paint that does not fully cover the underlying layer of paint. Essentially it is a technique already used by the the Old Masters to create a feeling of depth in their oil paintings. It can by used in painting with acrylics too. You basically dilute the paint with water until it contains only a little pigment. How much dilution is difficult to describe, one has to experiment with. I sometimes use acrylics that are maint for airbrushing and apply these just with a brush. Normally paint to be applied with a brush has to be thicker, so the airbrush paints have a good consistency for 'washing'. An effect of 'washing' is also that the pigment accumulates in surface depressions (such as engraved lines) or in corners, which is or can be an intended effect: these areas are less worn and, therefore, accumulate more patina or dirt, so that they appear darker (assuming that one used a darker colour for the wash). The 'washing' procedure can be repeated, once a previous layer is dry, which happens quite fast with acrylics. If you don't wait until the previous layer is dry, you may just wipe it off, when you go over the area again. 'Washing' does not work, when the solvent in the paint easily dissolves underlying layers of paint. So one has to be cautious when using organic solvent-based paints, such as enamels. Many people use (artists) oil-paint washes over acrylics. Because their pigment is very finely ground, they make good washes. When using oil-paints, one has to wait until they have dried, before applying the next layer of wash, which can be a long-winded process. Though, oil-paints are based on using organic solvents, the drying process in reality is an oxidation process, so that they are not easily re-dissolved by applying the next wash. I am also using inks (which by definition usually do not contain pigments, but dyes, i.e. organic coloured compounds), but if these inks are not 'permanent', i.e. water proof after drying, each wash needs to be protected by light layer of varnish, applied either by airbrush or with a spray can. Sepia ink makes for a good wash. I hope this explained the procedure a bit. wefalck
  19. Actually, 'weathering' or whatever one may call this is quite simple. A basecoat of some creamy-yellowish colour (depending on how dark the 'wood' should be) applied by airbrush: Over this apply washes of diluted acrylics 'burnt umbra': This was the 'wood' part. To give the 'wood' a 'weathered' or worn look, white (for bleached areas and areas with salt stains) and black (general grime) pastels are applied with a bristle brush or a cotton stick ('Q-tip'). If you want to show areas where 'patina' has been worn off, e.g. at edges of heavily used parts, you may want to apply the dry brushing technique mentioned above. I use it with restraint, as it may make the look rather manieristic and exaggerated (which seems to be a certain style among plastic modellers). wefalck
  20. Before I am off to the Polar Circle for a few days here a small update. The mainsail was sewn onto to the port side of the gaff. Correct, sewn ! On those Dutch craft the lace-line runs through a grommet of the head of the sail, then straight through a hole drilled into the gaff with a pear-shaped cross-section, runs along the starbord-side, returns throught the next hole and grommet, continues along the port side of the sail to the grommet, etc. Port side of the mainsail Into the grommets of the fore-leech of the sail the various lacings were spliced. With these the sail eventually will be tied to the mast. Often chafing of the lacing was reduced by a number of parrels. However, I neither could find small enough beads (0.6 mm diameter with a hole drilled through), nor did I manage to produce them myself. The parrels are optional anyway. Starbord side of the mainsail I also started to put in the reef points. These reef through a grommet and are secured by a knot on both sides. As one can see, the paintwork e.g. on the gaff needs a bit of touching up after all the handling ... wefalck
  21. You may want to have a look at my thread: http://modelshipworld.com/index.php?/topic/68-zuiderzee-botter-by-wefalck-artitec-resin/page-3. wefalck
  22. Do you have a table-saw or a router ? Whether you have one or not would determine further recommendations. wefalck
  23. This diverts the thread somewhat, but considerations of materials' use and their longevity are important. There has been a discussion on this topic on MSW 1.0. You may also want to consult this article on the Web-site of the Nautical Research Guild: http://www.thenrg.org/here-today-maybe-gone-tomorrow-dana-wegner.php Some museums refuse to accept models in which lead has been used, either when commissioned or even when donated. Metallic lead is not a very stable metal and will chemically react. A particular problem is lead in the presence of acetic acid, such as released as fumes from silicone rubbers. The lead will from lead acetate and just crumble away. I would shy away from using silicone rubber for the very reason that it perpetually gives off acetic acid. Seas made from it or sealings in cases will cause problems down the road. I know that some eminent modellers, such as McCaffery, suggested it in building cases, which is quite strange given that he is otherwise quite preoccupied with the durability of materials he uses. A twice-daily air-exchange is quite difficult to achieve consistently for a case in a home environment. It would mean some forced ventilation presumably. I think the important point is to allow air-exchange in order to avoid the build-up of humidity and, hence, condensation. In a home environment dust is the main consideration. The inward migration of dust can largely be prevented by felt-seals and/or creating a tortuose air-path between the base and the glass-case itself. I never had any humidity or dust problems in the cases I constructed. However, they were always in a properly heated appartment. wefalck
  24. Thanks, dafi and Pat, for the encouraging comments - not that I am very discouraged though Well, like many of my tools, the micro-crochet hooks are accidental finds, not stuff you can buy at will. I appropriated them, when we cleared out the house of a deceased aunt or one of my grandmothers, I don't remember exactly. I suppose they were meant for making crochet-lace. In the old days ladies decorated their handkerchieves etc. often with lathe borders. I just love these old-time tools and many are of much better make than what you can buy today. wefalck
  25. The rigging of the foresail was a rather painful process. My paper-sail turned out to be not quite fit for the purpose. They would be good to represent sails billowing in the wind. However, for representing sails that are hanging limp from the rigging in order to dry this technique is not quite suitable. In the past I made similar sails from ‚silk-span’, i.e. the silk cloth that is used to cover model airplane wings. These sails could be draped quite well, but the material would have been still too thick for sails in the 1:90 scale. The foresail set for drying Details of the foresail rigg So I toiled, sweating blood, but am still not really satisfied with the result. The foresail simply looks too stiff. I also had too cheat a bit in the area where the sail is pushed together above the dead-eye. Due to the rather forcefull procedure of folding the sails some of the hoops on the which the foresail runs on the stay were ripped off. There are many area where some touching up is necessary. Forestay set-up with dead-eye Halliard/down-haul belayed on mast-cleat On the botters everywhere half-cleats were used. This makes belaying a bit tricky on a model and somehow doesn’t look quite right, though I followed the sketches in BEYLEN (1985) Fore-sail sheet Forestay set-up with dead-eye A shortcoming often seen on shipmodels is that the running rigging seems to be sticking out of the block, i.e. it doesn’t run properly around the sheaves. The reason, of course, is that usually only a cross-hole is drilled, without attempting to shape the sheave. The rather elaborate procedure of block-making described earlier was intended to remedy this. Looking at the pictures, however, it seems that I only have been partially successful. Fore-sail sheet Masthead with the head of the foresail rigged with a sheep’s head-block And finally here a selection from my arsenal of rigging tools: Rigging tools (from left to right): straight watchmaker’s tweezers, bent tweezers, stamps-tweezers for draping sails and straightening wires, two antique micro-crochet hooks to pull on rigging, pin-vice with forked needel for pushing rigging, pin-vice, sewing needle for making fake splices, micro-scissors, microscopy-scalpel. Next the main-sail will go on. Another problem case ... wefalck
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