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wefalck

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Everything posted by wefalck

  1. I can very well imagine stropping such small blocks. They would be neded in that size for my next project. When you say that "they are the same material as used for 3D-printing", what does that actually mean? There are many different materials used for the different 3D-printing technologies. Talking about brown blocks and dead-eyes: have you ever tried to use phenolic resin, for instance Pertinax, as used in electric/electronic circuit boards etc.? It comes in different thicknesses and different shades of brown. It machines well and is easy to polish to nice sheen. The only draw-back is that the fumes from laser-machining are not particularly healthy.
  2. The longitudinal batten were notched into the transversal frames of the grating - I gather this is something difficult to reproduce by laser-cutting?
  3. A lot of masking, I suppose, or painting with a brush?
  4. Indeed, that's her. The picture came from my own collection: https://www.maritima-et-mechanika.org/maritime/lisboa/Fragata-Fernando.html. I was too lazy to spell out her rather longish name
  5. I may have to try this as my eyes are getting older. However, so far I found it somewhat confusing that the light moves, when I move the head. On the other hand, I have always difficulties directing the light from the direction of view ...
  6. One would need to dive down into the archaeology literature to find an answer to the question - if there is any. There are two related questions: what is actually the construction of the ship and against which constructional elements would the mast rest? In wooden ship-building there seem to be three principal methods: 1) a simple socket into which a tenon at the end of the mast fits; 2) a mast-stool (i.e. two stout pieces of wood between which the mast is pivoted and locked); 3) a socket and chocks between deck-beams (this is were usually the wedges are used: to secure the mast in these chocks). A variant of the stool is used on Arab craft, where there is a short 'stump' securely fastened to the structure of the ship to which the mast is lashed. As to the pictures with the very long 'wedges': I have my doubts that these are wedges. How would you hammer them down, when their top edge is a couple of metres above the deck? I have the suspicion that they serve to stiffen the lower mast and prevent the wood from splitting.
  7. Hairdresser's clips that they use to keep strands of hair out of the way, while working on others. Forgot what they are called exactly now, but there are small probes with a retractable, sprung hook at the end that are used in electronics to test circuits. They come in packs of 10 and cost only a couple of €/£/$: Random picture from Amazon. I always leave the ropes a bit longer, so that I can cut the end, that invariably will fray due to the manipulations.
  8. These look like diamond-files. Question is what quality they are. Industry produces a wide variety of such diamond tools with different types of bonding between the metal mandrel and the diamond grit. I suspect that they are resin-bonded, which is cheaper and softer than electroplating-type bonding, which is employed for files to be used on teeth or on metal. When using such files on Britannia-metal, you will just rip out the diamonds and imbed them into your workpiece ... Ordinary jewellers files will clog up quickly when used on soft materials such as Britannia-metal. There are special 'tin-files' that are not cross-cut, but have single rows of teeth only - but they are expensive and difficult to find. Clean the files regularly with a file-brush and rub some blackboard-chalk on them, which retards the clogging. Otherwise, I would work with abrasive wheels in a hand-held drill.
  9. There may have been a rope-ladder inboard, for instance. Below is an example from a 19th century Portuguese frigate, but it shows the idea:
  10. Actually, I am not so sure about that. As a youngster I had petroleum storm-lamp and that got quite hot in places, the glass and the funnel for instance.
  11. Pat, I think there was a sort of L-shaped carrier for the lamp, as Keith tried to reproduce in his first try. That's how interpret my photograph of the RELIANT. The carrier would have had two sheet-metal fingers over which sheet-metal loops at the back of the lamp would slide. During day-time the lamps would be taken down and stored.
  12. A question by the side: further up you used Vallejo 'Environment, 73.826' - from the descriptions I read, it is not clear, whether these paints actually have some fluffy or gritty stuff mixed into them, or whether 'mud and grass' is just a description of the colour. Any advice?
  13. The energy density of petrol/diesel used in an IC is by orders of magnitude higher than that of hay/oats used by a horse ... the amount of hay needed by an army (or by a city of old) is quite staggering and required considerable logistics ... plust the associated waste management. There was a continuous train of hay-waggons following the troops.
  14. I think you likely identified the lantern rig. The second picture shows, btw, another feature that one doesn't see too often on photographs and extremely rarely on museum models, let allone on amateur models: a sailcloth ventilator. It is just forward to the lantern halliards. Off the top of my head I only recall an instruction model in the Museu de Marinha, Bélém (Lisbon), the frigate ULYSSES of 1792: The same model shows another very rarely seen feature: chafing gear as applied to the deadeyes in preparation for long crossings:
  15. Carpenters make parts to fit in situ, using the part against which the second part fits as template. From an engineer's point of view this looks pretty 'artisanal', but it really works ...
  16. Thanks, Bob, for the praise. I have been always on the look-out for such details that one rarely find pictured or drawn. Some 40 years ago I contemplated building a model of her and acquired a set of model-building plans available at that time. For this purpose I also took various detail photographs of fittings and 'how things were done'. In the end, I built another tug, but the photographs still were useful. What is quite amazing is, how few photographs of certain (museum) objects/ships are actually available or known of. Some years back, a history of the Manchester Docks was being written on which RELIANT ex OLD TRAFFORD worked and the only pictures of her in the museum configuration they could find, were mine ... not even the NMM seem to have had some 😲
  17. Indeed, these are very useful and enlightening discussions. This is, where the enduring value of MSW is. It's good to be able to put dates on the lighting rules, particularly when one is interested in mid-19th century subjects. I wonder, how quickly these rules were in practices adopted in areas with predominantly regional traffic, say the Baltic and skippers were struggling to make ends meet. On the subject of steamer-lights, below a couple of images from 1979 (the colour of the slides had degraded, so I turned them into B/W images) of the steam-tug RELIANT before the NMM in its unfathomable wisdom decided to scrap her. RIP. The light was guided by two stays in front of the mast. I think there was a crane for the stays at the top of the mast and they were hooked into eye-bolts in the deck, set tought with small bottle-screws. There was also a small block in the top for the halliard, but I don't have any images for the belaying point of the halliard and the down-haul. And the stern-light on a bracket rivetted to the engine-room casing: More images of her here: https://www.maritima-et-mechanika.org/maritime/reliant/reliant.html.
  18. Did you develop a full body plan, with waterlines, diagonals etc.? That might be useful to check for unfair lines before you start cutting wood. It might also help to decide which half of the assymetrical bulkheads might have been the 'correct' one.
  19. Where is the engine located under the driver's seat? And how is power transmitted to the clutch, via a chain-drive, as on early petrol and steam lorries?
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