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Everything posted by wefalck
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Knots or hitches; what is appropriate?
wefalck replied to Maury S's topic in Masting, rigging and sails
Actually, I think every shipmodeller should have a book on knots/hitches on the bookshelf for reference (and doesn't quite need to be the 'Ashley'), even though a lot can be gleaned off the Internet these days. There are also several Web-sites that illustrate, how they are tied. Search for instance for 'animated knots'. However, beware that these sites are not always 100% fool-proof and sometime perpetrate common mistakes. For instance here: http://www.animatedknots.com/bowline/ the bowline knot it done incorretly with the loose end inside the loop, which can make it difficult to untie, if it becomes wedged between the loop and the bollard ... -
'Marbleing' and 'Wood-Graining' were actually specialisation in the painters' trade, but have largely died out after WWII with Resopal and Melamin taking over as false wood surfacing. It still seems to enjoy a certain popularity in the UK, judging by the fact that you can buy instruction books on it and some of the tools, such as special rubber combs, rollers and brushes to imitate wood grain. I have one of those books and others on faking materials. If you have a chance to visit the Zuiderzeemuseum in Enkhuizen (NL) to see their collection of traditional Dutch boats, you should also pay the old painter's shop a visit, where they demonstrate the techniques of marbleing and wood-graining. BTW, your fake (I hesitate to use this word these days ... the French faux seems to be less loaded ) looks really good, Druxey.
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Sherline mill and lathe questions
wefalck replied to Landlubber Mike's topic in Modeling tools and Workshop Equipment
A ring-light is definitely a most useful attachement to any mill. I found the microscope-ones to bulky for my machines and thus fabricated one myself. The basis was a so-called angel-light, an LED-ring to be installed in car head-lights that you can buy for a Euro or so from ebay, plus another couple of Euros for a small electronic transformer ('LED-driver'): http://www.maritima-et-mechanika.org/tools/attachments/attachments.html#Ring-light Not sure that I would go for the Sherline 8-axis configuration. Tramming the column to be vertical can be a pain. I would rather go for tilting vice or the Sherline-native tilting mounting plate. I would agree that a rotating table is a useful implement, if not even a must ... -
I am actually using paints pre-diluted for the airbrush. I put a drop into a glass mixing palett and water into an adjacent cup. The paint is diluted in the brush and applied. If needed, I take more water into the brush and distribute it. As long as the acrylic is wet it can be diluted or washed off again. Once dry, the paint is permanent and more washes can be applied without removing the previous ones. The trick is to build up the desired effect from several layers.
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Sherline mill and lathe questions
wefalck replied to Landlubber Mike's topic in Modeling tools and Workshop Equipment
Actually, my 'workshop' is a 3.5 sqm (= 36 sq ft) corner of my office, where I earn my living. I made some small (1' by 2') workstations, like the one above, for the heavier, metal-working machines. The other machines are kept on shelves around. -
Sherline mill and lathe questions
wefalck replied to Landlubber Mike's topic in Modeling tools and Workshop Equipment
Got some shelving in solid beech staves cut to size, or you may find cut-offs from similar kitchen tops. I sanded them nicely and gave them a coat of cellulose sanding filler, which was rubbed down with steel wool. This gives a nice satin finish that is quite resistant to oil, easy to clean and pleasing aesthetically. Otherwise, I made boxes or under-bench cupboards with drawers for the numerous attachments and tools one tends to collect with time. For the spindle tools (chucks, collets) I turned the drawers upside-down and drilled holes for the shanks into them: -
I got one of those mechanical edge-finders, but nearly never use it. In most cases I either take the shaft of a broken carbide endmill into a collet and slowly move the workpiece up against it until I feel the resistance, or for scribed marks, I use the the very sharp tip of a conical burr close above the surface to aim from two directions along the scribed lines.
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I think we had this question here before. Below a 'resin' model on which the technique chj mentioned was applied: I begin with a sprayed on base-coat of acrylic paint, in this case 'Wood' from Vallejo; over this washes of burnt umber and black acrylic paint are applied; for a weathered look you may want to add a light wash of white too; depending on the kind of wood you want to simulate, you may use a more reddish or yellowish wash; you can also water-based wood stains as washes on flat acrylics - do not use alcohol- or solvent stains, as these may dissolve the acrylic paint. Base-coat applied with an airbrush With washes of burnt umber, black and white
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Well machined !
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Well, actually, the varying colours of cotton vs. hemp sails were noted here already: https://modelshipworld.com/index.php?/topic/15584-a-method-for-making-panelled-sails-using-paper/&tab=comments#comment-486775. Older sails also tend to be lighter in colour due to bleaching by chlorine radicals from the seawater and strong UV-irradiation. And here is how I made paper-sails from inndividual panels in 1/90 scale: https://modelshipworld.com/index.php?/topic/68-zuiderzee-botter-by-wefalck-finished-artitec-resin/&do=findComment&comment=47886. I have used the same technique also with silkspan in 1/60 scale.
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These needle threaders seem to be an obvious solution - but I realised early on in my carreer that they cannot really work on scale(!) blocks, because in addition to the double thickness of thread you have the double thickness of the wires - in reality, however, the clearance in the shell of the block is not more than about a quarter more than the diameter of the rope for which it is made. Enlarging holes in model-blocks to suit, blows the idea of scale out of the window. The only solution is to stiffen the end of threads. My personal choice for this is fast-drying lacquer, such as solvent-based nail-varnish - I keep the use of CA to the absolute minimum, I almost hate it. With the lacquer you can also twist the end between your fingers to tighten it up - not recommendable with CA
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HMCSS Victoria 1855 by BANYAN - 1:72
wefalck replied to BANYAN's topic in - Build logs for subjects built 1851 - 1900
The steps will always remain an issue and the more so, if the printing plane is only slightly tipped with respect to one of the axes of the printer. This is inherent to the technology and will require some 'post-processing' for the foreseeable future on all filament printers at least. As noted before, I looked into this technology on and off for the past dozen of years or so, because I was attracted by the theoretical possibilities. Somehow I came to the conclusion that in our case it is probably best suited to print basic, but shapes with complex curvatures. Just as you would get raw pieces from a foundry and finish these using traditional machining techniques, such as turning, milling, or grinding. Generating complex surfaces using a digital technique, whether additive (3D printing) or substractive (CNC milling) will leave you at our scales always with the stepping issue, but will move the most difficult part to the computer.- 993 replies
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- gun dispatch vessel
- victoria
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Ed, you should actually put a scale figurine next to all the iron work in the photographs - it strikes me how massive these forged parts must have been on the original. I gather the yoke would have been something like 2 m (7') across ...
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HMCSS Victoria 1855 by BANYAN - 1:72
wefalck replied to BANYAN's topic in - Build logs for subjects built 1851 - 1900
I have watched the development of the 3D-printing technology for consumers over the past 12 years or. While it is true that things have become a lot cheaper and more accessible, there are inherent physical limitations for each of the technologies (e.g. filament application, localised UV-curing, etc.) that are expensive to overcome, because of the precision required for the mechanical parts. I think the 'digitisation' effects on surfaces that intersect the axes of the printer will remain a problem for filament printing, simply because the filament has to have a finite diametre. Here the spatial resolution (and some other effects) of localised UV-curing will be the challenge. It is a bit of a Catch 22 for parts such as the funnel: we have the surface details, the rivets e.g., but cannot smooth the surface in between (easily) because of those details. For parts without surface details, this is less an issue, of course. Orienting the part to be printed so that the stepped surface becomes less obtrusive would be a good strategy. This made me think, whether anyone actually has tried a sort of hybrid process: adding surface structures and details on the printer onto a machined basic shape. In the case of the funnel one would need actually a 4th axis of movement in order to rotate the piece under the printer head. Or one could print the detail onto a suitable carrier foil and wrap this around a core for the funnel. I know that you can buy 'rivets' printed onto decal-sheets - something along these lines, but less fragile than decals. Just thinking aloud ...- 993 replies
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size of people
wefalck replied to Snow's topic in Discussion for a Ship's Deck Furniture, Guns, boats and other Fittings
Yes of course: Picture doesn't necesserily mean photograph ... there were other media in these pre-smart-phone-selfie-era -
size of people
wefalck replied to Snow's topic in Discussion for a Ship's Deck Furniture, Guns, boats and other Fittings
This seems to apply to the industrial nations and the Nordic countries and N-America only. It also depends apparently strongly on the amount of manual labour and nutrition, hence on social class. The working classes seems to have been shorter at all times than the higher echelons of society. As the navies recruted themselves more likely from middle to lower echelons, they were likely to be shorter on average. I am 1.80 m (5'9") and it was a rather interesting experience to walk the streets of say La Paz in Bolivia, where most people seem to be +/- 1.60 m (5'3") ... -
size of people
wefalck replied to Snow's topic in Discussion for a Ship's Deck Furniture, Guns, boats and other Fittings
Until the general adoption of the metric system, which began to radiate from France in the second quarter of the 19th century, every country had its own definition of inch, foot, mile, pound, ton, etc. It seems tha Napoleon I was about 1.69 m, which was not very tall and smaller than a lot of the people, who surrounded him, judging by pictures. He was also of a more stocky built, which gave probably the impression to be smaller than he really was. -
In German we have a saying: moving house three times is as bad as burning down once ...
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I found that some of the professional movers are not so professional. There may be a considerable difference between what their sales rep promises you (and charges) and what their workmen actually do. Their appreciation of your spiritual and monetary valuables may vary quite a bit and their sense of convenience may override their sense of care for your possessions. I had very good and very bad experiences - during my last move from the Netherlands to France almost every piece of furniture was somehow dented - in spite of the promised 'export wrapping'. I could tell you wild stories of how they handled my stuff. On another occassion, I went with foreman of the gang through all the special objects, including the glass-cases for my models, and discussed with him their special needs for wrapping and handling - the standard reply is "don't worry" (which usually makes me worry ...); later that morning I was able to prevent by a second the apprentice from loading a large glass-case (boxed-up and marked with 'upright' arrows) onto a sack-trolley and going down the stairs with it ... Therefore, I would also recommend to take a delivery-trip in a car. There are two things to consider, when transporting models in a car: a) to prevent the load from shifting around in the car, e.g. when breaking, and b ) to prevent the model from touching anything. I always secure models on a base-plate, so no loose stands. This base-plate then can be fastened to a board that is larger than the model by say a couple of centimetres on all sides. Around this board you can construct a light-weight box or crate from e.g. plywood (more expensive) or high-density fibre-board. The box should have a bottom as well, so that you can slide in and out the board on which the model is fastened down. Depending on the size of the model, you may need to provide some handles for carrying the crate. This is a safe, albeit perhaps somewhat expensive method. If you don't want to construct a crate, I would at least mount the model on the board as described above, because this allows you to attach fastening straps etc. for securing the model in the car. Keep in mind that a sailing-ship model is quite top-heavy, so it may break off its stand that is securely fastened, say to the back-seat, during a serious breaking manoeuvre.
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HMCSS Victoria 1855 by BANYAN - 1:72
wefalck replied to BANYAN's topic in - Build logs for subjects built 1851 - 1900
Makes me itchy to begin with a project I have had in the back of mind for years, one of those steam gun-boats of the 1860s of the Prussian/German Navy ...- 993 replies
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I took some pictures of the yards of HMS GANNET (1878) in Chatham and of the frigate DON FERNANDO II E GLÒRIA (1843) in Lisbon while being refitted. In the first case the jack-stay was threaded and a hexagonal nut was screwed on, while in the second case they simply electro-welded(!) it to one of the stanchions. The thread-and-nut would have been a technical possibility in mid-19th century, but the welding is clearly a 'preservation' short-cut. The spars, to my knowledge, in both cases are reconstructions, so we are not absolutely sure what the actual practice in these cases at the time would have been. I would rather think that a hole was drilled across the jack-stay and a split cotter-pin inserted, the end of which where bend around to prevent it from falling out. It doesn't need to take up a lot of force, but just to prevent the jack-stay from slipping out, when the ship is rolling. I also seem to have read somewhere that turc's head knots where set onto the jack-stay and then painted over. One could also drill a hole through the stanchions and the jack-stay for a cotter-pin, but this would be more work and weakens the stanchion.
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- young america
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The little tool for making block-straps gives me ideas ...
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Poor Man's Lathe disasters
wefalck replied to stevenmh's topic in Modeling tools and Workshop Equipment
Just some thoughts on the future construction of a mast-/spar-lathe: - enclosed 12V DC motors of sufficient torque are becoming quite cheap (say 20 to 30 €) - watch out for scooter motors - electronic transformers with controllable voltage output of adequate Wattage can be had for 10 to 15 € - collet-chucks for ER11 or ER16 collets cost around 4 €, collets are as cheap as 1 € and clamp over a 1 mm range - use an extruded aluminium-profile or a strong wooden board as backbone; in the latter case a curtain-rail would serve to align spindle, tailstock and any steady. I gather for under 100 € you can build a lathe that suits your size requirements. -
Poor Man's Lathe disasters
wefalck replied to stevenmh's topic in Modeling tools and Workshop Equipment
... but beware that, if the trigger works on an electronic speed-control (pulse width modulation) as well, the dimmer will not work or only erratically. I have such a dimmer fitted to my work-bench and plug into it all sorts of machines that do not have originally a speed-control. Works also as temperature control for soldering irons btw.
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