sjj Posted April 13, 2016 Share Posted April 13, 2016 Hi All, I'm currently evaluating FormZ to use as a concept modeller and have been following the online video tutorials and have managed to create part of a vac form mold. I've managed to create a basic Nurbs model but for the life of me i cannot figure out how to cap the top and bottom (see images) could somebody shed some light on the process? Am i approaching this in the correct way? Thanks in advance Link to comment Share on other sites More sharing options...
Tech Posted April 13, 2016 Share Posted April 13, 2016 Hi SJJ, Welcome to the forum! To get what you want, (and the missing face is flat) use the Pick tool with the Segment Sequence option to pick the segment loop at the end. Get the Derive Segment tool and click in the screen. Copy the result, then Undo, Paste, and Stitch the result to the NURBS shape to fill in the missing face. You may also be able to use the Object Doctor to Fix the Missing face. (Set the Max # segments to something like 44, choose the Fix option, and click on the object.) If the end should be curved or domed, you can also use the Cap Tool to generate the desired surface. Do any of those do what you want? Please let us know if you have any further questions, we would be glad to help. (And if it is something specific to these object(s), copy them to a new project, save it, zip it, and use the More Reply Options button on the lower right to upload it along with your post.) Link to comment Share on other sites More sharing options...
jsiggia Posted April 13, 2016 Share Posted April 13, 2016 Z, on the subject of cap tool, can this be made to produce a wing tip? When applied to the end of a wing section, the cap becomes oddly shaped at the sharp trailing edge. Thanks, Joe Link to comment Share on other sites More sharing options...
Tech Posted April 13, 2016 Share Posted April 13, 2016 Joe, The Cap that is applied maintains tangency with the adjacent edge of the surface. If you have a question about a specific case, please post the file so we can take a look... Link to comment Share on other sites More sharing options...
jsiggia Posted April 14, 2016 Share Posted April 14, 2016 Z, Here is the file. Another issue while creating this shape. Create top and bottom airfoil shapes and join. (the result is a surface) now, to create a cap with tangency I need to use the uncover tool to create an uncovered wire. When I extrude this uncovered wire, I should get a surface with open ends, instead I get a solid with closed ends. Cap.fmz.zip Link to comment Share on other sites More sharing options...
jsiggia Posted April 15, 2016 Share Posted April 15, 2016 Are you able to reproduce this? Thanks, Joe Link to comment Share on other sites More sharing options...
Tech Posted April 15, 2016 Share Posted April 15, 2016 Hi Joe, Yes, the tight curveof the back of the wing causes a bit of a pinch in the cap at that location. You may need to make the shape a slightly different way -- perhaps with a NURBS by UV curves. Does that work better for you? Link to comment Share on other sites More sharing options...
jsiggia Posted April 16, 2016 Share Posted April 16, 2016 Here is the result using UV's. Thanks for looking. Joe CapTech.fmz.zip Link to comment Share on other sites More sharing options...
jsiggia Posted April 16, 2016 Share Posted April 16, 2016 Just to clarify, the start and end result are here in the same file. After applying the tool, only the center section is generated. Thanks, Joe Link to comment Share on other sites More sharing options...
Tech Posted April 18, 2016 Share Posted April 18, 2016 Hi Joe, When your "path" shapes all come together at a single point, this would create "source shapes" with no length -- which is not allowed. If you separate these end points just slightly, then you should be able to generate the complete shape: CapTech2.zip Does that help? Link to comment Share on other sites More sharing options...
jsiggia Posted April 18, 2016 Share Posted April 18, 2016 Thanks Z, Didn't we have a similar issue years ago with revolved objects? The source shape could not touch the revolve axis, glad that's fixed. Joe Link to comment Share on other sites More sharing options...
Tech Posted April 18, 2016 Share Posted April 18, 2016 Hi Joe, No, there were never any such issues with Revolve (that we can recall) -- but your source shape can't cross the axis (or you would get crossing faces, which is not good). Link to comment Share on other sites More sharing options...
jsiggia Posted April 18, 2016 Share Posted April 18, 2016 This was back in the mid 90's Thanks again Joe Link to comment Share on other sites More sharing options...
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