Cross sectional slices

DELFTship forum Hull modeling Cross sectional slices

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    • #36464
      Dave Leathley

      Hi all, I was wondering if there was a way of taking cross sections through my hull and being able to print them out so I can use them as a basis for a mold? or does anyone know a better way? I’ve been trying to do it in Autocad but that wasnt playing cricket.
      Cheers in advance.

    • #36467

      Go to Tools–>Intersections–>Stations, click on +1 icon, enter distance from stern, press red button,
      go back to home and click on Station button.

    • #36469
      Kevin Morin

      This reply may be slightly off point? but it does work and is helpful to my work, maybe others will find it helpful too?

      First, I’m using the 3D app SketchUP with D’Ship so after modeling in D’Ship Pro I export 3D>DXF and Import that into SkUP Ver8.

      Then using a Plugin called Slice Model, free on you can create stations/slices of the model in all three axis.

      There are dialog boxes to control the spacing and the slices come out with egg crate intersection slots taken out to accommodate those slices taken in the opposite direction so you can get both x-verse as well as longs and even waterlines (Z slices). I’ve not tried to roll the model in a SketchUP “group” to see if the Plugin Tool will create diagonals ?(!)

      By placing a deck in the hull, to limit the hull’s depth for one set of slices or by using the SketchUP “offset tool”, (or download the ‘smart’ Offset Tool Plugin from and you can create an entire egg crate form for plastic or cellulose hulls or other molds- male or female. I use this method to create frames for metal skiffs and it seems accurate to the D’ship model.

      This may not be the most elegant method but the method is fast, and low cost. Coupling the Plugins with SketchUP and D’Ship creates a set of working tools that rivals the extremely expensive marine modeling software suites as far as planning internal framing elements easily.

      Kevin Morin
      Kenai, AK

    • #36479
      Kevin Morin

      One more item in this topic. The application SketchUP has an ‘offset’ tool that will automatically create a copy of a closed planar object which is a given distance inside OR outside an outline plane.

      This allows the full height and breadth ‘slices’ of the Plug In mentioned above to be used to create frames from the full transverse sections. Further, if an x-verse frame were deeper below the chine than from the chine up? (common case) then.. two offsets could be taken one, for example at 6″ inside the outline of a ‘slice’ and the other 4″ inside the same outline.

      Using the line tool in SketchUP then point of intersection of the 4″ offset and the 6″ offsets could be drawn/connected so the resulting transverse frame was 6″ deep in the floors and 4″ wide at the topsides; after deleting the initial top line and the other (now) superfluous lines- the outline of a frame could be exported via *.dxf format to Gcode processors for tool paths.

      This is a very low cost way to create frames from D’Ship and SketchUP, along with the Plug-in app.

      Kevin Morin

    • #36746
      Dave Leathley

      This seems to be what I’m after. I take it it is possible to import files from D’ship? Just gotta learn how to use sketchup now.

    • #37486

      Maybe a little late to an answer but there may be someone else searching for the solution.

      Not so smart 🙂 But ;

      First of all, i am using the free 7.13 version of the DelftShip. I had worked hard on a sailboat model which i was planning to build from fiberglass. So i needed to build a mold for the hull of course. After a search, i understand that i can not use the lines plan in AutoCad to take cross sections and use it for developing stations.

      What i am trying to do is taking cuts in the X-axis, form where i want to use as stations for the mold. Lets say i need a station on the 85th centimeter from the aft. What i practically do is inserting a plane 84.5 cm away form the aft. Make the nets as corner nets. And delete all the net aft side to my new inserted 84.5 cm plane nets. I insert another plane 85.5 cm away from the aft and make the nets as corner nets. And delete all the nets bow side to my new inserted 85.5 cm plane nets. What is left is a cut of the hull in 1 cm thickness. Then i go back to creat a lines plan. As you can imagine what you see on lines plan is the coronal section of the hull at nearly 85 cm from the aft side. Now you can save as a DXF file and work on it with AutoCad. Rest is quite simple and needs some work.

      To make sense i attach an image of one of my projects which i arrange a station at the 32th centimeter of a sailboat.

      Hope this can be useful 🙂

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