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Our CAD Design Process - Kasten Marine Design

Accurate aligned frames are the foundation for a high quality plank on frame model. Save hundreds of hours of time when making a Plank on Frame Boat or Ship Model by starting with Accurately machine cut frames.

Buying a ready cut frame kit autocad 3d boat models relationship very expensive, use our files with your chosen CNC workshop and have your frame kit cut for the fraction of the cost. Costs can be kept to an absolute minimum by taking your own choice of Basswood or Hardwood Ply to a Laser Cutting Shop or CNC Milling Shop, using the Files from John-Tom and just pay for the machining time if you do not own a CNC mini Mill or laser set up - Cut out the middle man and make the best saving and still end up with top quality frame sets for a fraction of the price charged by model boat companies and people selling Plank on Frame Frame Kit Kits for Model Boats and Ships.

The inclusion of the Adobe PDF files enables full sized templates autocad 3d boat models relationship be reviewed and printed out to use a cutting templates if you wish to manually cut the parts with a Scroll saw or Jigsaw. PDF format plan sets are included for those customers who are not familiar with AutoCAD and wish to use a band saw, scroll saw or skill saw to cut the frame sets.

Sheet Size are generally mm x mm maximum with parts nested autocad 3d boat models relationship provide adequate clearance for both Laser Cutting and Router CNC Machining with the Tool size specified. Plywood Sheet Dimensions - xmm at 4. The planking on the Cabin and Rear and Fore Autocad 3d Boat Models Key Decks has been included separate files.

To obtain a quote on any boat frames or things you want cut by CNC or Laser or converting to AutoCAD, please send me the files by email to save the shipping expense. Scan your plan set at a high street printers and send the files by email to avoid shipping costs. Please ensure that you have permission to have the plans used by a third party from the Copyright Holder of the Plan Set before sending.

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It allows for easy and intuitive creation and manipulation of complex surface models while also allowing the freedom to use standard AutoCAD drafting techniques. Hull provides powerful features such as surface-surface intersection, surface trimming, plate expansion, structural section definition, shell expansion, shell stringer definition, offset book printing, and pin jig drawing generation.

The data designed in the external hull production model flows freely into the Structure product. More �. Structure offers rapid 3D production detailing of internal hull structure. It combines aspects of both associative and parametric 3D modeling but is tailored specifically to the design of ships and offshore structures. Accurate and intelligent 3D project models can be created very quickly utilizing a cross section of shipbuilding specific capability and native AutoCAD tools.

In a world of 3D design and manufacturing, many activities still need to be supported with 2D drawings during design and throughout the shipyard. Using shipyard standards, MarineDrafting allows the creation of 2D approval and workshop drawings directly from the 3D model.

AutoCAD Forum. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. This page has been translated for your convenience with an automatic translation service.

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Back to Topic Listing Previous Next. Message 1 of 6. Once detailed, the parts are labeled and grid lines are edited or added as needed. Text, marking lines, cut lines and plate edge entities are placed on separate layers, each of which are color coded according to the requirements of the NC cutting service being used.

Prior to being nested, large parts will be cut into smaller pieces for the sake of efficient nesting onto standard plate sizes. At this stage we create "Plot Files" of the assembled parts that illustrate their layout and assembly.

For example, frames are shown as whole entities prior to nesting and the plates are arranged to show their relationship to each other and to the whole. These "Plot Files" are turned into a series of PDF files which are then sent via email to the owner and the builder, or wherever else they may be needed. The owner, builder, and the builder's subcontractors or vendors can plot the PDF drawings to scale locally using any convenient copy shop plotting service.

Additionally, the actual parts assembly files are occasionally useful to the builder, in which case they will be provided in AutoCAD format directly to the builder - also by email. At this point, the "Plot Files" of the parts assemblies are preserved as-is for future reference.

Those files are then copied into a new directory where they are further detailed for NC Cutting. Creating the actual Cut Files consists of performing the slicing and nesting onto the locally available plate sizes, then organizing the CAD files and the entities they contain per the requirements of the cutters that are being used.

The files are first organized so that each file only contains parts having the same plate thickness. There will ordinarily be separate files for Frames, Plating, Tank Faces and Lids, Engine Stringers, Stem and Keelson, and for Stringers if there is sufficient longitudinal curvature to warrant developing longitudinal stringers.

Then the "stock" plate sizes available from suppliers are drawn into each file to scale, and the frames or other parts are sliced as needed for efficient nesting. In order to get the most efficient use of plate, we will ordinarily do most of the nesting manually. Software is available for this task, but it is not 'smart' enough to make the various decisions required to achieve an efficient 'nest' of parts, for example to decide where to cut a frame so that it can be most easily welded back together after cutting.

When the nestings are complete, there will be an array of stock sized plates of equal thickness within each file, each having a completed 'nest' of parts. Additional labeling is introduced to identify plate sizes, plate thickness, alloy specification, etc. Prior to finalizing the Cut Files, all cut lines are error checked within Microstation in order to correct any minute line crossings, unintended small line gaps and to eliminate any duplicate entities.

Cut Files: Since it is far less expensive to send the parts definitions by email than it is to send the cut metal by truck to some distant place, we will always try to make use of metal cutting shops that are closest to where the boat will be built. We will assemble the completed "Cut Files" into a series of ZIP archives, and ready them to be sent by email directly to the cutter who has been chosen for the job.

The builder will ordinarily purchase the plate and have it delivered to the cutters or in many cases the metal supplier will also do the cutting in-house.

After the parts have been cut they will be shipped to the builder's yard. In this way, the builder ordinarily takes on the cost of the materials, as well as the cost of cutting and shipping. Tabbed Parts: Among the images shown to the right, one illustrates an NC cut plate that has been delivered to the builder "all in one piece" for the sake of easier shipping. By this means, although all of the parts have been pre-cut, small 'tabs' have been left intact at intervals along the part edges.

This is done so that the parts all remain in easily handled, easily shipped, and easily referenced assemblies. It is then a simple matter to cut the small tabs to release the parts. It also allows the builder to instantly tell if any of the NC-cut parts are missing.

Tabbed parts are common in New Zealand and Australia, but oddly this is not often done in North America. Markings: In the tabbed cut plate image to the right, take note that the parts have been marked with an ink-jet print head, rather than having to use the plasma or water-jet heads for etching the markings. This is brilliant, as it vastly speeds up the marking process, the marking lines and text are accurate and easy to read, and the ink-jet does not impose any heat or stress on the plates.

Again, this seems to be relatively common 'down under' but, oddly, not in North America. Quality Assurance: During the cutting process, our follow-through is an important part of our design service. We have found this to be essential in order to accommodate the varying requirements of the various different NC cutters we encounter.

For example, if a vessel will be built in New Zealand, we will customize the job to their specifications and adapt the nestings to metric plate sizes, etc. Since we work with a variety of metal cutters, it is often our practice to first send one component through the cutting process as a trial.

Most often this is the rudder, since it is relatively small but consists of precise foil shapes for the lifts, and a precise outline for the plating. If the trial component is satisfactory to the builder, has clean cut edges, and the parts accurately fit together, then the rest of the NC cutting files will be sent through.

On the other hand, if a builder has established a reliable track record with their cutter of choice, the builder might elect to forego this precaution.

Because by the time the metal arrives at the builder's yard, we will have already done quite a bit of the actual boatbuilding work right here on our computers! So although we do not 'build' boats per se, we are indeed very much involved in the actual boatbuilding process. After the parts are defined, nested, sent out and NC cut, we maintain a close relationship with the builder as well in order to be sure they fully understand how the fabrication should be accomplished.

Though the above summary has focused on metal boats, NC cutting can also be used for router cutting of plywood or any other panel type of structures, whether they are for hull and deck structures, or for boat interiors. Even on a metal boat, the interior plywood bulkheads, soles and other flats can be detailed accurately within the CAD model, then pre-cut and delivered to the builder. Yet another application for the 3D modeling methods described above is for direct 3D cutting.

Here, the NURBS surface model is used directly by a 5-axis router to carve out the shape that has been modeled. Most commonly this would be used to directly create a plug or mould for GRP construction of a hull or superstructure.

This approach saves an enormous amount of the builder's in-house development labor and shop space. Another application of this technology is to create a scale model, whether just for fun, or to verify the aesthetic presentation, or possibly for tank testing. A somewhat unusual project is the prototype shown above and to the right The intent was to have a mould cut by NC router so that the various body parts could be easily laminated.

For the Piranha, Kevlar and vinyl ester resin would yield a structure that's stiff, light, strong For the Piranha retro-rod we could elect to have the NC router carve a female mould and we would be able to laminate body parts immediately. However the NC cut moulds are typically made of reinforced foam, so they are only good for up to perhaps half a dozen uses.

If a larger production run were anticipated, we would instead have the NC router carve a male plug for each part, and then we could make a much more durable mould for each part. This kind of NC Cutting technology is well established for all manner of manufacturing endeavors, and there is very good reason for it: Economy..!

The following flow-charts were created in order to show our design process - more or less taking the usual "design spiral" and stretching it out into a linear diagram.

I have used two different ways to represent the Autocad 3d Boat Models Number work-flow, plus a link to our Maxsurf pages for a complete overview of the software described above.. The following are two examples of how we make good use of a 3D CAD workflow in order to create a design and its structure, then to communicate the result using 3D PDF files for use by both client and builder.

While we regularly develop NC cutting files as described above, we do not sell "parts kits " per se. In other words, we do not sell any pre-cut materials. Instead, we offer Building Plans and NC Cutting Files for any of our pre-existing designs, or for new designs we offer our services for design, analysis, and parts development.

Once we have completed a new custom design, or whenever we have provided a client with one of our pre-existing stock designs, we will then make recommendations and introductions to qualified builders who we consider to be suited to the task at hand. For example, some builders will prefer to provide a bare hull, others a power-away package, and yet others will only take on the construction of a turn-key yacht.

Although our Building Plans packages are very complete, we very much prefer to stay involved during the boat's construction in case there might be clarifications desired on the part of the builder, or if there are possible changes introduced by the owner, or if additional shop drawings might be requested, etc.

For pricing and ordering information on any of our pre-existing boat designs and NC cutting files, please see our Plans List web page. Whether we create the NC files from scratch, or offer them as part of a stock design package, we still include our follow-through during the metal cutting. In advance of developing any new boat design or other modeling project and prior to developing NC Cut Files we will provide a written Design Proposal that includes an estimate for our work that is based on the scope of the project that has been proposed.

For more information about creating NC Cut files for any of our designs, or possibly to generate NC cutting files for any other design, please contact me as needed. Modeling the Lines. Aft Perspective Forward Perspective. Frames Prior to Nesting. Larger Nestings Image. Larger Image - Courtesy of Loren Murphy. The Piranha - A Retro Rod

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