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People just don’t use it because they are afraid of the UI (but you just have to get used to it) and of course because universities provide AutoDesk, Cinema4D, Photoshop and other tools for free.
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Personally I’ve never seen a more promising program for CAD than blender itself (had been using AutoCAD, DraftSight, QCAD, LibreCAD, FreeCAD). It’s also helpful to use snapping to the grid. It’s important to enter some values manually in blender if you want high precision. Just re-set the value to the even value then. The main quirks are that at times you have some odd numbers like 2.9999999999 instead of 3. A recent blendercode commit now allows to fully set a value to 0 (thanks for that). Precision modeling has its quirks while possible. (You are planning to build space rockets? For that to work we’d need to make progress on our open source metal 3D printer I think. The lower drawing is the half-breadth with the Breadth of Beam established. Hense, the Length Between Perpendiculars (LBP) and will be useful in calculating room and space for frames. The red perpendicular lines at the ends are the perpendiculars and measure from one end of the gun deck to the other - essentially, rabbet to rabbet. We will get to those once the Water and Buttock lines are done. Not shown are the frame room and space dimensions. The lines drawn here are exact measurements of what is in the tables from the book. While it doesn’t look like much yet, the above drawing pulls together the backbone of the ship. They must correspond.Ģ) In Step 3, we will establish the Water Lines and other essential lines for lofting.
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Find out what the forefoot is and the FP and what measurement is used where.ġ) It is essential that you establish the perimeter, breadth, keel assembly and top timber height at the outset for both drawings. Use the wealth of measurement information found in the AOTS book to make drawings as accurate as possible. Goal: Trace drawings and establish the correct dimensions for the Sheer, keel, false keel, rabbet, LBP and other essential lines.Īt this point, you will trace the drawings using DeltaCAD, but try to refrain from absent minded tracings.
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It’s gotta be level…ġ1) Now the fun begins! Tracing the drawings. You will most likely have to repeat step 7 multiple times for an hour or more to ensure you stetch and pull the drawing to the correct shape.ġ0)Ğstablish baseline of drawing on a horizontal plane. Using a known measurement, such as those above in #5, measure for both X and Y axis. Go to => file => import image from fileĩ)Ĝheck scale. Make sure aspect ratio is locked at this time.Ĩ) Import jpeg to CAD. It will take multiple attempts to get the proper scale.ħ) To scale drawing, open jpeg file go to =>tools => adjust size and enter a best guess percentage. You want the Length Between Perpendiculars = 1677”, Length of Gun Deck = 140”, Depth of Keel = 5”, Siding of Keel = 18” and Rabbet = 2”. Since DeltaCAD measures things in inches, I converted the tables to inches. There is a wealth of information here that will help when sizing the jpeg files. My mind just thinks that way.Ħ) Now look at the tables on pages 8 and 9. Regardless of the final size you will build in, I find it easier to go to ¼ inch scale. Go to =>tools => adjust size, and then set scale to 1:48. Don’t worry about the actual scale at this point, we will adjust that later.Ĥ) Import drawing into computer, place the file on your desktop.ĥ) Open DeltaCAD. Do any enhancements necessary to make the image as crisp as possible. You might have to scale drawing down so it does not distort due to its length. Most other items can be copied and scaled from the book.Ģ) Make photo copies of the Sheer and Half-Breadth Plans found on pages 32 and 33.ģ) Splice pages together and scan into computer as a jpeg file. Since the AOTS book has multiple plan excerpts, we will focus primarily on a Sheer and Half-Breadth Plan for the purpose of making frames. Goal: convert paper drawings into a jpeg file, upload to computer, and then scale drawings.ġ)ěefore we can even think of making the frames, we have a lot of prep work to complete, namely, the creation and fairing of a set of digital plans. Step 1: Importing the paper plans into the computer: