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BACKGROUND I became interested in scanning half-hull models as an aside from my research on a particular ship, SS Meteor (1864). I have a long-standing interest in the fast screw cruisers of the 1860s, including the Delano/Isherwood and Lenthall/Isherwood designs, and the privately-designed competitors: the USS Idaho by Steers/Dickerson, and Dennison Lawlor's SS Meteor. My interest also extends to British and French commerce-raiding and pursuit cruisers of that era: HMS Inconstant and related classes, and the four French-built Confederate raiders that became BAP América, BAP Unión, SMS Augusta, and SMS Victoria. I recently obtained a scan of the HMS Inconstant plan from The National Maritime Museum. The screw clipper Meteor (1864) was a smaller version of USS Idaho, but she had Scotish engines that delivered her promised speed. She was built by a Boston consortium to pursue Confederate commerce raiders, but was delivered too late for that purpose. The ship's trials showed her to be the fastest screw steamer in America, until the Navy tested its Isherwood-engined cruisers two years later. Despite attempts to use her in a commercial venture, the ship was really only suitable as a commerce raider, or for pursuing them. RESULTS OF TESTING THE TWO GENERATIONS OF SENSE HAND-HELD SCANNERS I have recently been successful in scanning a private half-hull of the USS Wampanoag, and the model of SS Meteor at the Portsmouth (NH) Athenaeum. In late September I will scan the larger Meteor model at the Smithsonian Institution. From these scans I will prepare traditional body, half-breadth, and sheer plans using SolidWorks. Below are my recommendations for anyone seeking to use a Sense scanner to scan half-hull models. TECH MEMO: To Recap: For best results in scanning half-hulls, I have settled upon the generation 1 Sense3D scanner, paired with a Surface Pro 2 tablet (with the faster i5-4300U processor, and 4 to 8 GB RAM) running Windows 8.1. Both these devices can now only be obtained used or refurbished, and often the Pro 2 requires an operating system reset to Win8.1 from Win10. However, the gen1 scanner has 3x3x3 meter capability and full user control of settings, vs. 2x2x2 meters and a too-friendly (impaired) interface with the generation 2 Sense2 scanner (retail: $360-400). Out of the box, you can distinguish the two generations of scanner thus: The second generation "Sense2" has and "Intel inside" logo on the base label; the original (prefered) "Sense3D" does not. The good news is that Cubify has become part of 3DSystems, and the formerly non-existent support for the Sense scanner has been replaced by exemplary 24-hour support. Software for both generations of Sense scanners (as well as the Apple variant) is found at: Www.3dsystems.com/shop/support/sense/videos [Apple users -- note that at $80 the retail price for the scanner for your OS is roughly 20 percent the cost of the Windows scanner. Go figure...] The older (gen1) scanner can be found for $200-350 on ebay -- usually in new condition, due to an initial frustration effect. The Surface Pro 2 with 4300U quad processor has a nominal speed of 1.9 GHz, but ranges up to 2.6 or 2.9 GHz. That is plenty to drive the scanner, which the box says requires 2 GHz and 4 GB. I CANNOT RECOMMEND the 4200U SP2 (1.6 GHz and up), so shop carefully. Expect to pay $300-350 for a 4300U SP2 on ebay (you may get a stylus included), or just go to Newegg and spend $330: https://www.neweggbusiness.com/product/product.aspx?item=9b-34-735-142 In either case, you will need a $35-50 Surface Pro 2 stylus, because the sensor software is MUCH easier to use with one. A mount to join the SP2 and scanner can be 3D-printed from the design at: http://www.thingiverse.com/thing:237449 OR you can contact me for my redesign of that mount (as a print file, or an actual mount).
US-SteamNavy posted a topic in New member IntroductionsHello, I am a retired civil (water resources) engineer with a life-long interest in naval history and ships. Early in college, my two NROTC courses in Naval Ships Systems turned my career interest from computer science to engineering. Since then, I have always hankered to build model ships -- but never could find the time to start. Several years ago, upon retirement, I attempted a kit model I'd hauled around for 30 years: the USS Essex (32). But I soon realized my woodworking was too limited to meet my own standards, and my patience is too short for the hobby. Lately my son, a mechanical engineer, has been tutoring me on using SolidWorks CAD to gin up hull models from full-body plans. This is much more up my line. Our first effort was the USS Wampanoag (1866). We used the digitally-modeled hull to try our hand at 3D printing. We produced a tiny 3-inch hull, and learned a great deal about what doesn't work. Eventually I want to learn how to render the ships in 3D color drawings. Meanwhile I will hone my CAD skills, and enjoy working in the digital medium while pursuing my ship research. My only current project in wood is a 20-inch-long (1:48 scale) built-up wood and aluminium model of a Mississippi River mortar raft. I found some good plans from other modeler's past efforts, but also (thanks to on-line content of an Ohio library) came across a construction sketch that I'm sure is new to the modeling knowledge base. The model is on hold due to other projects, though. I am a passionate collector, collator, and distributor of data on various naval and engineering topics. Last year, I used an overhead frame and a 24-megapixel Nikon to digitally photograph Mare Island Museum's copies of The Modern System of Naval Architecture, in Three Folios. by J. Scott Russell (1865). As a complete novice in very-large-format book photography, I learned a lot about lighting requirements and distortion-correction, but eventually obtained some decent grey-scale page images. I have put the folios on a DVD as an HTML web. Two of the three folios are entirely ship plans, now available as 400-dpi JPEGs. In a few days, I will post in the "commercial" area of this site how to purchase the DVD -- the profits from its sale go to the Mare Island Museum. This year, I scanned an unbound set of the two folios of William H. Webb: Plans of Wooden Vessels, selected as types from one hundred and fifty of various kinds and descriptions, from a fishing smack to the largest clipper ships and vessels of war, both sail and steam, built by Wm. H. Webb, in the city of New York, from the year 1840 to 1869. I just offered to donate that set of 400 dpi TIFFs to the NRG, if they want to sell them on their site as downloads for $1 apiece -- maybe make some revenues for the Guild! My present research and article-writing passion began in late 2012, and involves obtaining the lines of the R. B. Forbes steam clipper Meteor (1864) from a 8-foot half-hull model held by the Smithsonian Institution. Last month, SI at last located the model in a warehouse, and I have my fingers crossed that we'll have a 3D scan done before the New Year. I'll open a forum topic on the peculiar design and history of this fast steamer, which was built to run-down and sink Rebel "Alabamas". The Meteor features prominently in an alternative-history "naval novel" that I am attempting to write. The premise is that Fenians would have had much better luck by taking to the high seas as commerce raiders after the US Civil War, rather than attempting to invade Canada in 1866 and 1867. I hope to produce a plausible and readable first novel after a few more years of researching and writing. Expected readership: about ten. I look forward to browsing the forums and admiring the work of real modelers! Craig
I have quick question for you. Do you ever import a sketch picture to SW with the intent to trace over it? If you do or have what steps did you take to prepare the image? Why does SW enlarge the image once you load it in?
I had created the attached as a guide to interpret the Zebra View of my Hull and offer it here for others ( hoping it has some value as I have yet to "get it" .....but haven't given up yet!) I include a Zebra View image of my hull. if anyone understands Zebra View and can offer some insight it would be greatly appreciated. Alan TRYING TO MAKING SENSE OF THE ZEBRA VIEW IN SOLIDWORKS.pdf