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Claes Lundstrom

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About Claes Lundstrom

  • Rank
    Apprentice

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  • Homepage
    www.touchcad.com , www.lundstromdesign.com
  • Location
    Stockholm, Sweden

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    touchcad

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  1. Claes Lundstrom

    3d powerpack unfold surface tool

    As a pro boat designer, I doubt that the unfolding in VW will be usable. It's just too limited. I only use VW for basic documentation when doing boat design. Here is an example having about 200 parts plus profiles made of high grade stainless steel, and nested for laser cutting. The unfolds also included on surface markings for precise positioning of connecting parts. The fit was 100% right.
  2. Claes Lundstrom

    Flattening 3D Geometry - Redux

    The Wireframe mode dialogue comes after having selected Convert to Polygons. The method will flatten the selection to zero height. If yo still want the object to be 3D, you can convert it back to 3D polygons, or set the Plane to Layer Plane in Object info. This allows you to rotate the model in 3D, though still having zero height in the Z- direction.
  3. Claes Lundstrom

    Flattening 3D Geometry - Redux

    How about converting your 3D polygons to Polygons? Menu-> Modify -> Convert to Polygons -> Wireframe mode. If you still want 3D polygons, you can convert it back to 3D again. They will then have the same Z value.
  4. Claes Lundstrom

    Homemade CNC

    I think you can get up to 10W now. They seem to have the disadvantage of generating an oval dot rather than circular, so it might be a good idea to wait for that technology to catch up. A CO2 is still a better technology from a cutting point of view, though also more complex with a huge and somewhat fragile tube, fairly sensitive mirrors, and requiring water cooling. In your case you also need to enclose the machine as the light is very powerful, but also to contain the smoke generated. Yes, I have had one in the past mostly for cutting Plexi glass.
  5. Claes Lundstrom

    Homemade CNC

    A blue laser head should be easy to insert as it basically a small box where age milling uint is located. The Chinese ones are quite inexpensive.
  6. Claes Lundstrom

    Homemade CNC

    It's most likely a question of using the right elements in the drawing. CAM, cutter controller, etc programs are often very limited in what they accept and can process. As a rule, it's therefore recommended to keep things as simple as possible. Avoid symbols, Polylines, Polylines defined as a filled surface (with holes in it), filled objects in general, possible groups, etc. A rounded rectangle is a Polyline and they should be avoided as they very often cause all sorts of problems. Lines, arcs and polygons almost always work. What you can do if you have a problem is to run the Decompose command before exporting, export, and then run Undo to get back to the civilization again. I have found that it almost always solves the problem.
  7. Claes Lundstrom

    Homemade CNC

    Wish VW would support SVG as it gives yet another alternative to exporting to Adobe Illustrator and similar. You can use EPSF and DXF but the DXF import filter in Illustrator and many cutting programs are very unreliable.
  8. The solution to the ZY problem is to have a flip dialogue whenever there is a 3D conversion, in, as well as out. VW does it..... sometimes.
  9. OBJ should work, though VW could do with some improvements, for example a dialog where you state the up direction (Z in VW, Y in many rendering programs). Support for plain colors would be good too (textures seem to work ok both in and out from VW). And a scale factor function, as many of the "blob squeezer" types of programs don't care much about physical scale. Many of them work with very small models, which requires quite a lot of model searching when exporting and importing between CAD and rendering programs.
  10. Claes Lundstrom

    3D silhouette line

    You can of course fake it in a viewport but that does it make it a 3D object. You can however fake it in 3D in OpenGL. OpenGL has one setting in the GL rendering setting for solid objects contours. You can however bypass that by using non filled objects such as 3D polygons, which do have their own setting using the settings in the Attributes palette. In this case I extracted the top face into a 3D polygon rectangle, made it unfilled, adjusted the line thickness and placed it ate the top. As you can see, it clearly differs in thickness (OK I may have overdone it a bit).
  11. Claes Lundstrom

    3D silhouette line

    OpenGL can give you edge lines, but not individually controllable. You have to draw them by hand and give them a thickness. For edges, you can extract a face, and make it unfilled having a line thickness. The same applies to extracting edges as lines or curves and setting the line thickness.
  12. Claes Lundstrom

    Homemade CNC

    Why odd ? Considering one myself. Had two 3D printers, one Co2 laser for cutting plastic parts, two knife cutting machines for cutting cardboard for scale models with printed textures. Considering one of these: https://shop.stepcraft-systems.com/D-Series , mainly because it can carry many tools using the same mechanics. Milling, laser head, knifes, pens, 3D printer heads, etc. Good if you have limited space. Also handy as all these methods have their plus and minus sides.
  13. Claes Lundstrom

    how to stretch a symbol

    If it's 3D, you can trim it with an enclosing solid.
  14. Claes Lundstrom

    Need to draw a Boat

    Been there, done that. All fabrics based examples. Same program.
  15. Claes Lundstrom

    Need to draw a Boat

    I probably have the best program for complex unfolds such a boat hulls and all other parts of a boat for that matter. It does not just try and say if it works or not. It allows you to adjust the shape interactively as a part of the hull fairing, and it's probably the only program on the market that does so. I typically use this dynamic interaction to optimize the design so that it uses a minimal amount of material, and also interacts with the nesting of the panels. The example shows a 34 foot stainless steel boat having just under 200 parts plus various profiles, which we ran directly into laser cutting from the CAD files provided. The laser also added on skin marketings so that for example frames and bulkheads could be fitted without really measuring. We just placed the parts on the reference lines, which dramatically decreased the production time. The model was 100% generated in one program except for the renderings, and some documentation drawings done in VW.

 

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